This document discusses natural dyes, focusing on annatto dye extracted from the annatto plant. It provides background on natural dyes and dyeing processes using mordants. Specific details are given on extracting annatto dye from the seeds and its uses as an antimicrobial and food coloring. Applications of natural dyes in traditional Indian medicine and for producing medicinal fabrics are also mentioned.
Natural dyes are colorants derived from plants, invertebrates, or minerals. The majority come from plant sources like roots, berries, bark, leaves, and wood. Natural dyes can be grouped according to their chemical structures, such as carotenoids which include carotenes that produce orange and red-orange colors, and xanthophylls which are yellow. Flavonoids are water-soluble compounds that produce yellow, red, violet and blue colors in many flowers and fruits through anthocyanidins and anthocyanins. Anthraquinones and napthoquinones are also groups of natural dyes. Natural dyes have traditionally been used for coloring textiles, leather, and food.
Seminar topic on natural dyes by Arpana kambojarpana kamboj
Natural dyes are derived from plants, invertebrates, or minerals. Common natural dyes include turmeric, indigo, and madder. Natural dyes have been used for thousands of years in places like China, Egypt, and by Alexander the Great. While natural dyes are eco-friendly and produce unique shades, they also fade quickly, are difficult to produce consistently, and do not produce bright colors. Mordants are used to improve the fastness of natural dyes on fibers. The document discusses different types of natural dyes and mordants as well as methods for extracting and applying natural dyes.
This document provides information about natural dyes that can be extracted from various plants, fungi, insects, and other natural sources. It discusses dye sources such as tree barks, leaves, flowers, fruits, oak galls, safflower, woad, madder, cochineal, lichens, and more. It also lists common "weeds" that can be used as dye plants, such as yarrow, heather, carrot, horsetail, lady's bedstraw, ivy, St. John's wort, bracken, dock, comfrey, dandelion, and nettle. The document concludes by outlining the dye processes of cleaning fibers, mordant
This document provides information about several natural dyes that can be used for textile dyeing, including indigo, pomegranate, madder, kamala, lac, mayrabolan, catechu, and himalayan rubrub. For each dye, it lists the common name, botanical name, trade name, and brief descriptions of the plant source and dyeing properties. The document aims to educate about natural dye options and their characteristics for colorfastness on different textile fibers like wool, silk and cotton. It appears to be from a company marketing natural dyes from India.
This document discusses the dyeing of textiles with natural dyes. It provides advantages like producing soft colors that are soothing to the eye and environmentally friendly. Disadvantages include difficulties reproducing shades and lack of technical knowledge. Natural dyes are classified in various ways, including by hue, origin, and chemical constitution. Mordants are used to fix dyes to textiles, and there are different types of mordants. Dyes can be applied through pre-mordanting, simultaneous mordanting, or post-mordanting methods.
Decolourization of textile waste water and dye effluentمحمد حسنین شبیر
This document provides an overview of a seminar on decolorization of textile wastewater and dye effluents. It discusses the composition of textile wastewater, effects of dye effluents, and need for treatment. It then summarizes various treatment methods including chemical (oxidation, Fenton's reagent), physical (adsorption, membrane filtration), and biological treatments. It provides details on specific treatment processes and their advantages and disadvantages for dye removal.
Dyes are colored organic compounds that can impart color to substrates like cloth, paper, plastic or leather. There are several types of dyes classified by their chemistry and application method. Reactive dyes are widely used for cotton dyeing due to their high washfast properties. Disperse dyes are used predominantly on polyester fibers. Direct dyes are water-soluble and used for cotton and cellulose. Vat dyes are applied to cellulosic fibers from a soluble leuco form. Sulfur dyes provide good washfastness for economical cotton dyeing.
This presentation discusses the use of walnut shells as a natural dye. It introduces the presenters and provides an overview of topics to be covered, including natural dyes, advantages, extraction and dyeing processes, main constituents of walnut shells like juglone, and applications. Walnut shells contain polyphenols, juglone and other chemicals that allow them to dye fabrics an appealing brown color and have medicinal uses. The extraction process involves boiling powdered walnut shells to produce a filtrate for dyeing fabrics.
Natural dyes are colorants derived from plants, invertebrates, or minerals. The majority come from plant sources like roots, berries, bark, leaves, and wood. Natural dyes can be grouped according to their chemical structures, such as carotenoids which include carotenes that produce orange and red-orange colors, and xanthophylls which are yellow. Flavonoids are water-soluble compounds that produce yellow, red, violet and blue colors in many flowers and fruits through anthocyanidins and anthocyanins. Anthraquinones and napthoquinones are also groups of natural dyes. Natural dyes have traditionally been used for coloring textiles, leather, and food.
Seminar topic on natural dyes by Arpana kambojarpana kamboj
Natural dyes are derived from plants, invertebrates, or minerals. Common natural dyes include turmeric, indigo, and madder. Natural dyes have been used for thousands of years in places like China, Egypt, and by Alexander the Great. While natural dyes are eco-friendly and produce unique shades, they also fade quickly, are difficult to produce consistently, and do not produce bright colors. Mordants are used to improve the fastness of natural dyes on fibers. The document discusses different types of natural dyes and mordants as well as methods for extracting and applying natural dyes.
This document provides information about natural dyes that can be extracted from various plants, fungi, insects, and other natural sources. It discusses dye sources such as tree barks, leaves, flowers, fruits, oak galls, safflower, woad, madder, cochineal, lichens, and more. It also lists common "weeds" that can be used as dye plants, such as yarrow, heather, carrot, horsetail, lady's bedstraw, ivy, St. John's wort, bracken, dock, comfrey, dandelion, and nettle. The document concludes by outlining the dye processes of cleaning fibers, mordant
This document provides information about several natural dyes that can be used for textile dyeing, including indigo, pomegranate, madder, kamala, lac, mayrabolan, catechu, and himalayan rubrub. For each dye, it lists the common name, botanical name, trade name, and brief descriptions of the plant source and dyeing properties. The document aims to educate about natural dye options and their characteristics for colorfastness on different textile fibers like wool, silk and cotton. It appears to be from a company marketing natural dyes from India.
This document discusses the dyeing of textiles with natural dyes. It provides advantages like producing soft colors that are soothing to the eye and environmentally friendly. Disadvantages include difficulties reproducing shades and lack of technical knowledge. Natural dyes are classified in various ways, including by hue, origin, and chemical constitution. Mordants are used to fix dyes to textiles, and there are different types of mordants. Dyes can be applied through pre-mordanting, simultaneous mordanting, or post-mordanting methods.
Decolourization of textile waste water and dye effluentمحمد حسنین شبیر
This document provides an overview of a seminar on decolorization of textile wastewater and dye effluents. It discusses the composition of textile wastewater, effects of dye effluents, and need for treatment. It then summarizes various treatment methods including chemical (oxidation, Fenton's reagent), physical (adsorption, membrane filtration), and biological treatments. It provides details on specific treatment processes and their advantages and disadvantages for dye removal.
Dyes are colored organic compounds that can impart color to substrates like cloth, paper, plastic or leather. There are several types of dyes classified by their chemistry and application method. Reactive dyes are widely used for cotton dyeing due to their high washfast properties. Disperse dyes are used predominantly on polyester fibers. Direct dyes are water-soluble and used for cotton and cellulose. Vat dyes are applied to cellulosic fibers from a soluble leuco form. Sulfur dyes provide good washfastness for economical cotton dyeing.
This presentation discusses the use of walnut shells as a natural dye. It introduces the presenters and provides an overview of topics to be covered, including natural dyes, advantages, extraction and dyeing processes, main constituents of walnut shells like juglone, and applications. Walnut shells contain polyphenols, juglone and other chemicals that allow them to dye fabrics an appealing brown color and have medicinal uses. The extraction process involves boiling powdered walnut shells to produce a filtrate for dyeing fabrics.
The textile industry is one of the important industries which generates large amount of industrial effluents each year causing the main source of water pollution which is not only harmful for aquatic life but also mutagenic to human. It cause negative impact on environment as well as human beings.
This presentation summarizes a study on the efficiency of different alkalis in removing pollutants from chrome tanning liquor waste in tannery industries in Bangladesh. The study characterized waste from two tanneries and tested the removal efficiency of chromium, COD, color, and turbidity using various alkalis including sodium hydroxide, lime, and magnesium oxide. Sodium hydroxide was found to have the fastest settling time but lime achieved the highest color removal. Magnesium oxide produced the least amount of sludge. The study concluded that chemical treatment alone was not sufficient and effluent should undergo further biological treatment. It also found that using mixtures of alkalis could increase cost efficiency for treatment.
Amir Hamza is a student at Daffodil International University with ID 132-23-193 in the Department of Textile Engineering (TE). The document defines and describes different types of dyes including natural dyes, synthetic dyes, and various classes of synthetic dyes such as acid dyes, basic dyes, direct or substantive dyes, mordant dyes, vat dyes, reactive dyes, disperse dyes, azoic dyes, and sulfur dyes. It also discusses dye classification, color fastness, the basis of color, molecular energy levels, and food dyes.
The Complete Technology Book on Dyes & Dye IntermediatesAjjay Kumar Gupta
The Complete Technology Book on Dyes & Dye Intermediates
Organic compounds or mixtures, as well as petroleum downstream materials, are dye intermediates that are synthesised for use in textiles, paints, plastics, paper, printing inks, and leather. Color, origin, chemical structure, and application process have all been used to classify dyestuffs into various categories. Acid orange, yellow, and acid black Dyes, Melachite green crystal, Basic magenta lumps, and Anthraquinone Type Intermediates are some of the most common Dyes Intermediates. Acid, Direct, and Reactive Dyes all need them as a raw material.
For More Details, Click Here: https://www.entrepreneurindia.co/book-details/78/the-complete-technology-book-on-dyes-dye-intermediates-2nd-edition-
Contact us
Niir Project Consultancy Services
An ISO 9001:2015 Company
106-E, Kamla Nagar, Opp. Mall ST,
New Delhi-110007, India.
Email: npcs.ei@gmail.com , info@entrepreneurindia.co
Tel: +91-11-23843955, 23845654, 23845886
Mobile: +91-9097075054, 8800733955
Website: www.entrepreneurindia.co , www.niir.org
This document provides information about pigments, including:
- Pigments are insoluble coloring substances that are used to color materials without chemically bonding to them.
- Organic pigments include azo, polycyclic, and phthalocyanine pigments. Inorganic pigments include titanium dioxide, iron oxides, cadmium and chromium pigments.
- Pigments are used to color fabrics, leather, paper, plastics, paints and other materials. They provide properties like color strength, light fastness and weather resistance.
Dyes are colored organic compounds that are used to impart color to various substrates, including paper, leather, fur, hair, drugs, cosmetics, waxes, greases, plastics and textile materials.
whereas pigments are organic and inorganic materials which are practically insoluble in medium in which they are incorporated.
Sustainability of vat and sulphur dyes 2Haseeb Ahmad
This document discusses sustainability issues with vat and sulfur dyeing and proposes solutions. The key problems are the hazardous reducing agents containing sulfur used in the dyeing processes. Alternatives discussed include palm wine, hydrolyzed sugar, marcaptoethanol, and stable reducing agents. Pad-ox dyeing methods are also presented as being more sustainable by reducing water usage and effluent pollution. Methods to recycle dyes like direct electrochemical reduction of vat dyes and recovering indigo from denim wastewater are also summarized.
Characteristics of industrial textile effluents and different types of effluentsMithun Chouhan
This document discusses the characteristics of textile effluents and dye materials used in the textile industry. It describes the various processes involved in textile manufacturing like degumming, desizing, scouring, bleaching, dyeing, printing and finishing. It explains that textile effluents contain a variety of organic and inorganic materials used in these processes. It also outlines the different types of dyes used for different fibers like direct dyes for cellulose, acid dyes for wool, and disperse dyes for polyester. Finally, it provides details on the properties and uses of common dyes like direct dyes, reactive dyes, vat dyes, azo dyes, sulfide dyes
This document provides information about various types of dyes used in the textile industry, including their properties and dyeing processes. It discusses natural dyes extracted from plants as well as synthetic dyes like direct dyes, vat dyes, disperse dyes, and reactive dyes. For each dye type, the document outlines their key properties, how they interact with different fibers, and their advantages and limitations. It also mentions sustainability considerations like limiting chemical usage and following eco-label standards.
This document discusses the treatment of wastewater from the textile industry. It notes that textile wastewater contains a variety of dyes and chemicals from dyeing and finishing processes that make it challenging to treat. The major pollutants in textile wastewater include high levels of suspended solids, chemical oxygen demand, heat, color, acidity, and other soluble substances. The document then outlines the primary, secondary, and tertiary treatment processes used to remove these pollutants, including screening, sedimentation, neutralization, flocculation, aerated lagoons, activated sludge processes, and various advanced oxidation processes.
This document discusses different types of dyes. It begins with an introduction to dyes, noting that they are colored substances that bond to substrates and are often water-soluble. It then covers the main types of dyes including reactive dyes, which form covalent bonds; disperse dyes, which are used for synthetic fibers; azo dyes containing the R-N=N-R' group; sulfur dyes for cotton; and vat dyes which are insoluble but become soluble during the dyeing process. The document provides details on the characteristics and applications of each dye type.
APPLICATIONS OF NANO AND BIOTECHNOLOGY IN TEXTILE INDUSTRIES Praveen Rams
This document provides an overview of applications of nanotechnology and biotechnology in textiles. It discusses how nanotechnology involves engineering on an atomic scale to create small, cheap devices using less raw materials. Nanoparticles between 1-100 nm can be used in textile fibers, yarns, and coatings. Biotechnology uses cellular and biomolecular processes to develop technologies that improve fiber durability. It can be used to genetically modify microorganisms, replace harsh chemicals with enzymes in processing, and develop diagnostic tools and waste management solutions for the textile industry. Both nanotechnology and biotechnology can enhance natural fibers like cotton and wool.
Organic pigments can be categorized as either azo or non-azo pigments. Azo pigments contain the -N=N- group and provide color ranging from bluish red to greenish yellow. Their properties depend on the coupling component used in their synthesis. Non-azo pigments include polycyclic, anthraquinone, dioxazine, and quinacridone pigments. Different pigment classes have varying properties like lightfastness, weatherfastness, and solvent resistance depending on their chemical structure and substituents. Organic pigments are an important class of colored materials made of carbon chains and rings.
Textile dyeing industry: wastewater treatment and managementMd. Shamim Ahmed
small overview on wastewater treatment and management made by my brother(Roni Das) from another mother. I helped him to made this because he is greenhorn about power point presentation.
This presentation provides an overview of disperse dyes. It was presented on November 27, 2016 at NUB by 4 students. Disperse dyes are organic compounds without ionizing groups that are insoluble in water but can be dispersed to dye synthetic fibers like polyester. The history and properties of disperse dyes are discussed. Disperse dyes are classified by chemical structure and fastness properties. Dispersing agents and carriers are used to aid disperse dyeing at high temperatures or through carrier methods. Examples of commercial disperse dyes and carriers are provided.
This document discusses dyes, their classification, and properties. It defines dyes as colored organic compounds used to impart color. Dyes must be colorfast, soluble, able to bond to fibers, and withstand washing. There are several classification methods, including by source (natural vs synthetic), chromophore (nitro/nitroso, azo, triarylmethane, anthraquinone, indigo), and application method (direct, vat, mordant, azoic, disperse). Synthetic dyes account for most commercial use due to low cost, brightness, and ease of application. Azo dyes represent over half of dyes and provide a wide range of colors.
Ecofriedly dyeing process and ecolabelsChandran Kani
This document discusses eco-friendly dyeing processes and eco-labeling. It defines what makes a product eco-friendly, including limiting harmful chemicals and minimizing pollution. The government of India has banned certain dyes and chemicals containing amines. Requirements for eco-friendly textiles include the absence of banned chemicals and heavy metals, and low levels of formaldehyde. The document then discusses how to make various textile production processes like scouring, bleaching, dyeing and finishing more environmentally friendly, for example by using enzymes. It also covers eco-labeling schemes in India to identify environmentally friendly textile products for consumers.
Textile Auxiliaries concentrates for formulatorsKetan Gandhi
The document lists various dyeing and pretreatment auxiliaries used in the textile industry including their functions. Products include wetting agents, detergents, dispersants, defoamers, dye fixing agents, leveling agents, and others. Concentrations range from 40-100%. Functions include improving dye uptake, wash fastness, wettability, penetration of liquors, removal of sizes and impurities, and preventing issues like foaming or backstaining.
This document discusses treatment of wastewater from a water jet loom machine in the textile industry. It compares the efficiency of chemical coagulation and electrocoagulation methods. For chemical coagulation, the type and amount of coagulant and coagulant aids, pH, and stirring rate significantly impacted treatment efficiency. The optimum conditions removed 89% of turbidity, 85% of COD, and 71% of oil. For electrocoagulation, electrode material, electric potential, and contact time were significant. The optimum electrocoagulation conditions removed 99% of turbidity, 97% of COD, and 87% of oil.
Direct dyes are water-soluble aromatic compounds that have an affinity for cellulose fibers like cotton. They are applied as aqueous solutions and bond to fibers physically through hydrogen bonding and van der Waals forces. Direct dyes generally have poor fastness properties but these can be improved through after-treatments using metallic salts like copper or chromium compounds, or formaldehyde, which increase the dye's molecular weight and bonding strength to the fibers. Key factors that influence direct dye uptake include electrolyte concentration, temperature, liquor ratio, and dye class.
Nature expresses itself in a wide spectrum of colours all around
us. The alchemy of colours started from an early time. Indians
have been forerunners in the art of natural dyeing. The advent
of synthetic dyes caused rapid decline in the use of natural dyes,
which were completely replaced by the former within a century.
Earlier understanding of dyeing techniques and their applications
was empirical and was not backed by scientific reasoning. Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources,Natural dyes are friendly and satisfying to use.
The document discusses antimicrobial agents and mechanisms of resistance. It covers several topics:
1. Definitions and classifications of antibiotics based on chemical structure, source, mechanism of action, and spectrum.
2. Mechanisms of antibiotic resistance in bacteria including production of enzymes to destroy drugs and genetic/non-genetic resistance.
3. Approaches to address rising antibiotic resistance such as appropriate use and preventing overprescription.
The textile industry is one of the important industries which generates large amount of industrial effluents each year causing the main source of water pollution which is not only harmful for aquatic life but also mutagenic to human. It cause negative impact on environment as well as human beings.
This presentation summarizes a study on the efficiency of different alkalis in removing pollutants from chrome tanning liquor waste in tannery industries in Bangladesh. The study characterized waste from two tanneries and tested the removal efficiency of chromium, COD, color, and turbidity using various alkalis including sodium hydroxide, lime, and magnesium oxide. Sodium hydroxide was found to have the fastest settling time but lime achieved the highest color removal. Magnesium oxide produced the least amount of sludge. The study concluded that chemical treatment alone was not sufficient and effluent should undergo further biological treatment. It also found that using mixtures of alkalis could increase cost efficiency for treatment.
Amir Hamza is a student at Daffodil International University with ID 132-23-193 in the Department of Textile Engineering (TE). The document defines and describes different types of dyes including natural dyes, synthetic dyes, and various classes of synthetic dyes such as acid dyes, basic dyes, direct or substantive dyes, mordant dyes, vat dyes, reactive dyes, disperse dyes, azoic dyes, and sulfur dyes. It also discusses dye classification, color fastness, the basis of color, molecular energy levels, and food dyes.
The Complete Technology Book on Dyes & Dye IntermediatesAjjay Kumar Gupta
The Complete Technology Book on Dyes & Dye Intermediates
Organic compounds or mixtures, as well as petroleum downstream materials, are dye intermediates that are synthesised for use in textiles, paints, plastics, paper, printing inks, and leather. Color, origin, chemical structure, and application process have all been used to classify dyestuffs into various categories. Acid orange, yellow, and acid black Dyes, Melachite green crystal, Basic magenta lumps, and Anthraquinone Type Intermediates are some of the most common Dyes Intermediates. Acid, Direct, and Reactive Dyes all need them as a raw material.
For More Details, Click Here: https://www.entrepreneurindia.co/book-details/78/the-complete-technology-book-on-dyes-dye-intermediates-2nd-edition-
Contact us
Niir Project Consultancy Services
An ISO 9001:2015 Company
106-E, Kamla Nagar, Opp. Mall ST,
New Delhi-110007, India.
Email: npcs.ei@gmail.com , info@entrepreneurindia.co
Tel: +91-11-23843955, 23845654, 23845886
Mobile: +91-9097075054, 8800733955
Website: www.entrepreneurindia.co , www.niir.org
This document provides information about pigments, including:
- Pigments are insoluble coloring substances that are used to color materials without chemically bonding to them.
- Organic pigments include azo, polycyclic, and phthalocyanine pigments. Inorganic pigments include titanium dioxide, iron oxides, cadmium and chromium pigments.
- Pigments are used to color fabrics, leather, paper, plastics, paints and other materials. They provide properties like color strength, light fastness and weather resistance.
Dyes are colored organic compounds that are used to impart color to various substrates, including paper, leather, fur, hair, drugs, cosmetics, waxes, greases, plastics and textile materials.
whereas pigments are organic and inorganic materials which are practically insoluble in medium in which they are incorporated.
Sustainability of vat and sulphur dyes 2Haseeb Ahmad
This document discusses sustainability issues with vat and sulfur dyeing and proposes solutions. The key problems are the hazardous reducing agents containing sulfur used in the dyeing processes. Alternatives discussed include palm wine, hydrolyzed sugar, marcaptoethanol, and stable reducing agents. Pad-ox dyeing methods are also presented as being more sustainable by reducing water usage and effluent pollution. Methods to recycle dyes like direct electrochemical reduction of vat dyes and recovering indigo from denim wastewater are also summarized.
Characteristics of industrial textile effluents and different types of effluentsMithun Chouhan
This document discusses the characteristics of textile effluents and dye materials used in the textile industry. It describes the various processes involved in textile manufacturing like degumming, desizing, scouring, bleaching, dyeing, printing and finishing. It explains that textile effluents contain a variety of organic and inorganic materials used in these processes. It also outlines the different types of dyes used for different fibers like direct dyes for cellulose, acid dyes for wool, and disperse dyes for polyester. Finally, it provides details on the properties and uses of common dyes like direct dyes, reactive dyes, vat dyes, azo dyes, sulfide dyes
This document provides information about various types of dyes used in the textile industry, including their properties and dyeing processes. It discusses natural dyes extracted from plants as well as synthetic dyes like direct dyes, vat dyes, disperse dyes, and reactive dyes. For each dye type, the document outlines their key properties, how they interact with different fibers, and their advantages and limitations. It also mentions sustainability considerations like limiting chemical usage and following eco-label standards.
This document discusses the treatment of wastewater from the textile industry. It notes that textile wastewater contains a variety of dyes and chemicals from dyeing and finishing processes that make it challenging to treat. The major pollutants in textile wastewater include high levels of suspended solids, chemical oxygen demand, heat, color, acidity, and other soluble substances. The document then outlines the primary, secondary, and tertiary treatment processes used to remove these pollutants, including screening, sedimentation, neutralization, flocculation, aerated lagoons, activated sludge processes, and various advanced oxidation processes.
This document discusses different types of dyes. It begins with an introduction to dyes, noting that they are colored substances that bond to substrates and are often water-soluble. It then covers the main types of dyes including reactive dyes, which form covalent bonds; disperse dyes, which are used for synthetic fibers; azo dyes containing the R-N=N-R' group; sulfur dyes for cotton; and vat dyes which are insoluble but become soluble during the dyeing process. The document provides details on the characteristics and applications of each dye type.
APPLICATIONS OF NANO AND BIOTECHNOLOGY IN TEXTILE INDUSTRIES Praveen Rams
This document provides an overview of applications of nanotechnology and biotechnology in textiles. It discusses how nanotechnology involves engineering on an atomic scale to create small, cheap devices using less raw materials. Nanoparticles between 1-100 nm can be used in textile fibers, yarns, and coatings. Biotechnology uses cellular and biomolecular processes to develop technologies that improve fiber durability. It can be used to genetically modify microorganisms, replace harsh chemicals with enzymes in processing, and develop diagnostic tools and waste management solutions for the textile industry. Both nanotechnology and biotechnology can enhance natural fibers like cotton and wool.
Organic pigments can be categorized as either azo or non-azo pigments. Azo pigments contain the -N=N- group and provide color ranging from bluish red to greenish yellow. Their properties depend on the coupling component used in their synthesis. Non-azo pigments include polycyclic, anthraquinone, dioxazine, and quinacridone pigments. Different pigment classes have varying properties like lightfastness, weatherfastness, and solvent resistance depending on their chemical structure and substituents. Organic pigments are an important class of colored materials made of carbon chains and rings.
Textile dyeing industry: wastewater treatment and managementMd. Shamim Ahmed
small overview on wastewater treatment and management made by my brother(Roni Das) from another mother. I helped him to made this because he is greenhorn about power point presentation.
This presentation provides an overview of disperse dyes. It was presented on November 27, 2016 at NUB by 4 students. Disperse dyes are organic compounds without ionizing groups that are insoluble in water but can be dispersed to dye synthetic fibers like polyester. The history and properties of disperse dyes are discussed. Disperse dyes are classified by chemical structure and fastness properties. Dispersing agents and carriers are used to aid disperse dyeing at high temperatures or through carrier methods. Examples of commercial disperse dyes and carriers are provided.
This document discusses dyes, their classification, and properties. It defines dyes as colored organic compounds used to impart color. Dyes must be colorfast, soluble, able to bond to fibers, and withstand washing. There are several classification methods, including by source (natural vs synthetic), chromophore (nitro/nitroso, azo, triarylmethane, anthraquinone, indigo), and application method (direct, vat, mordant, azoic, disperse). Synthetic dyes account for most commercial use due to low cost, brightness, and ease of application. Azo dyes represent over half of dyes and provide a wide range of colors.
Ecofriedly dyeing process and ecolabelsChandran Kani
This document discusses eco-friendly dyeing processes and eco-labeling. It defines what makes a product eco-friendly, including limiting harmful chemicals and minimizing pollution. The government of India has banned certain dyes and chemicals containing amines. Requirements for eco-friendly textiles include the absence of banned chemicals and heavy metals, and low levels of formaldehyde. The document then discusses how to make various textile production processes like scouring, bleaching, dyeing and finishing more environmentally friendly, for example by using enzymes. It also covers eco-labeling schemes in India to identify environmentally friendly textile products for consumers.
Textile Auxiliaries concentrates for formulatorsKetan Gandhi
The document lists various dyeing and pretreatment auxiliaries used in the textile industry including their functions. Products include wetting agents, detergents, dispersants, defoamers, dye fixing agents, leveling agents, and others. Concentrations range from 40-100%. Functions include improving dye uptake, wash fastness, wettability, penetration of liquors, removal of sizes and impurities, and preventing issues like foaming or backstaining.
This document discusses treatment of wastewater from a water jet loom machine in the textile industry. It compares the efficiency of chemical coagulation and electrocoagulation methods. For chemical coagulation, the type and amount of coagulant and coagulant aids, pH, and stirring rate significantly impacted treatment efficiency. The optimum conditions removed 89% of turbidity, 85% of COD, and 71% of oil. For electrocoagulation, electrode material, electric potential, and contact time were significant. The optimum electrocoagulation conditions removed 99% of turbidity, 97% of COD, and 87% of oil.
Direct dyes are water-soluble aromatic compounds that have an affinity for cellulose fibers like cotton. They are applied as aqueous solutions and bond to fibers physically through hydrogen bonding and van der Waals forces. Direct dyes generally have poor fastness properties but these can be improved through after-treatments using metallic salts like copper or chromium compounds, or formaldehyde, which increase the dye's molecular weight and bonding strength to the fibers. Key factors that influence direct dye uptake include electrolyte concentration, temperature, liquor ratio, and dye class.
Nature expresses itself in a wide spectrum of colours all around
us. The alchemy of colours started from an early time. Indians
have been forerunners in the art of natural dyeing. The advent
of synthetic dyes caused rapid decline in the use of natural dyes,
which were completely replaced by the former within a century.
Earlier understanding of dyeing techniques and their applications
was empirical and was not backed by scientific reasoning. Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources,Natural dyes are friendly and satisfying to use.
The document discusses antimicrobial agents and mechanisms of resistance. It covers several topics:
1. Definitions and classifications of antibiotics based on chemical structure, source, mechanism of action, and spectrum.
2. Mechanisms of antibiotic resistance in bacteria including production of enzymes to destroy drugs and genetic/non-genetic resistance.
3. Approaches to address rising antibiotic resistance such as appropriate use and preventing overprescription.
1. The document discusses opportunities for using natural dyes in the textile industry as an alternative to synthetic dyes, which can be harmful.
2. Currently, natural dyes have limitations like lower yields and requiring mordants for good color fastness. The Green Chemistry Group aims to develop environmentally-friendly extraction and dyeing processes to address these issues.
3. The group's objectives include identifying optimal extraction methods, developing natural dyes for different fiber types, employing non-metal mordants, and assessing processes through life cycle analysis.
This document discusses antimicrobial finishing on apparels. It defines antimicrobial and antimicrobial agents as chemicals that prevent or inhibit microbial growth. The objectives of antimicrobial finishing on apparels are to prevent cross-infection, reduce odor formation, safeguard fabrics from staining and deterioration, and protect performance. It also discusses types of microbes, evaluation methods, where antimicrobial finishing can be applied, and types of finishes including biostats and biocides.
This document discusses various types of dyes used for different textile fibers, including their classification, application methods, and suitability. It covers direct dyes for cellulosic fibers, azoic dyes which form insoluble colors within fibers, vat dyes which require chemical treatment, sulphur dyes for dark shades, and reactive and acid dyes for protein fibers like wool and silk. Each dye class has different properties in terms of color range, fastness, ease of use, and fiber compatibility. The appropriate dye must be selected based on the fiber and desired color and performance characteristics.
Dye and Yielding Plants M.P. Dr. Azra khan PH.D. Research Paper ◄ vaquar khan ► ★✔
Natural Dye- Yielding plants Rajgarh District (M.P.)
Rajgarh district of Madhya Pradesh has been unexplored from floristic point of view.
A perusal of literature reveals that there is no publication pertaining to the floristic composition of the area.
It was therefore thought imperative to undertake the botanical survey of this unexplored but floristically rich district of state.
Extraction of Natural Dyes from Forest Trees and their Application in Textilesijsrd.com
The environment - friendly natural dyes are recently enjoying resurgence in popularity because of the concern with the carcinogenic, mutagenic and sensitizing characteristics of many synthetic dyes. Showing concern towards the nature and to avoid pollution of our environment two forest plants Bixa orellana and Caesalpinia sappan were selected as natural dye sources. In this study, from the bark of C. sappan, seeds of B. orellana and combination of B. orellana and C. sappan, the dyes were extracted. The phytochemical compounds present in the extracts were analyzed as carotenoids in B. orellana and anthocyanin, phenolic acids, flavonoids in C. sappan using TLC. The extracts were then applied to cotton fabric using various natural and chemical mordants which were then tested for their color fastness against rubbing and washing to know the efficiency of the dye. This study will help in improving the natural dye resources and replace them with synthetic dyes, consequently leading to a safe environment.
This document lists and defines the main parts of common tree types. It identifies the crown, stem, bark, branches, leaves, and roots as the basic parts of a tree. It then lists several tree species in Portuguese and English, including the oak, chestnut tree, pine, cedar, cypress, fir, beech, plane tree, maple, willow, eucalyptus, palm, and bonsai.
Synthesis, Characterization and Antimicrobial activity of 2-Amino-1,3-benzoth...IOSR Journals
2-Amino-1,3-benzothiazole was synthesized and schiff bases were prepared by reacting a series of aromatic aldehydes with 2-amino-1,3-benzothiazole to form a number of potentially biologically active compounds. Azo dyes of 2-amino-1,3-benzothiazole were synthesized by reacting various aromatic amines , substituted amines and phenols. The structures of 2-amino-1,3-benzothiazole, Schiff bases and azo dyes were confirmed by using FT-IR, 1H-NMR, Mass, UV, spectroscopic technique. The dyeing ability of azo dyes was checked by applying azo dyes on various fabrics. The tiltle compounds were also tested against representatives of gram-positive and gram - negative bacteria by agar diffusion method. Ampicillin was used as positive control.
Environment friendly dyeing processes for cotton pptAdane Nega
The document discusses various environmentally friendly dyeing processes for cotton textiles. It describes using bifunctional reactive dyes that have high fixation rates and reduce dye concentrations in effluents. Low salt reactive dyes and glucose replacements for sodium hydrosulphite and sodium sulphide are also presented as reducing pollution in effluents. Iron complexes and electrochemical reduction methods are discussed as alternatives to hydrosulphite for vat dyeing. The aim is to minimize chemicals in effluents and make dyeing more sustainable.
This document discusses antimicrobial textiles and introduces Vestex, a cotton-based fabric treated with silver, cationic antimicrobials, or organosilane compounds to kill bacteria. Vestex fabrics repel fluids, resist stains, and contain antimicrobial properties to reduce bacterial transmission. The antimicrobial in Vestex punctures cell membranes and uses an electrical charge to kill microorganisms without allowing resistance. Vestex is durable, machine washable, helps keep users dry and cool, and aims to reduce healthcare-associated infections through antimicrobial uniforms and linens.
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The document summarizes the Fashion Merchandising degree program at the University of Memphis. The program is housed within University College and is accredited. Students earn a Bachelor of Professional Studies degree with a concentration in Fashion Merchandising and a minor in Marketing Management, requiring 120 credit hours over four years. Coursework includes general education requirements, major courses in fashion merchandising and marketing management, and a professional semester involving an internship and senior project. Graduates can pursue careers in retail, merchandising, marketing, and related fields.
The document discusses using herbal extracts to provide antibacterial finishes on textiles. Some key points:
1) Many plant extracts like neem, aloe vera, and clove oil contain compounds that have natural antibacterial properties and can be used as eco-friendly textile finishes.
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This presentation discusses antimicrobial finishes for textiles. Microbes like bacteria and fungi can grow on fabrics and cause odor, staining, and quality deterioration. Antimicrobial treatment prevents microbial growth. Methods include using antimicrobial fibers or post-treating fabrics. Common agents are quaternary ammonium compounds which are applied during pretreatment or finishing. Testing verifies the effectiveness of treatments against microbes using agar diffusion, challenge, and other standard tests. Antimicrobial textiles are important for hygiene in applications like socks, sportswear, and linens.
After a tooth extraction, several options are available for administering antibiotics or antimicrobial drugs. Oral administration is generally the most convenient and economical route but may result in incomplete drug absorption in the gastrointestinal tract. Parenteral routes like intravenous and intramuscular injection allow for more rapid and precise dosing but are more invasive and require more medical skill. Topical administration can help minimize systemic side effects. Selection of the appropriate antibiotic considers the infection severity, ability to drain the infection source, and patient's immune status, aiming to use the narrowest spectrum drug with the lowest toxicity. Antimicrobial resistance is an increasing problem promoted by misuse and overuse of antibiotics.
This document discusses various types of antimicrobial finishes for textiles. It describes two aspects of antimicrobial protection: preventing pathogenic microbes and protecting the textile itself. Problems caused by microbial growth include functional, hygienic and aesthetic issues. The document then covers the mechanisms of antimicrobial finishes including controlled release and bound mechanisms. It provides examples of specific antimicrobial chemicals and finishes like triclosan, quaternary ammonium salts, organosilver, and chitosan. Fields of application include industrial, home, and medical textiles.
The document provides information on various types of dyes used in the textile industry such as direct dyes, vat dyes, disperse dyes, and reactive dyes. It describes the properties and mechanisms of each dye type. It also discusses natural dyes extracted from plants and provides tips for more sustainable and eco-friendly dyeing processes.
Natural dyes are dyes derived from natural sources such as plants, animals, and minerals. Until the 19th century, natural dyes were the primary dye sources. While synthetic dyes now dominate due to lower costs and brighter colors, natural dyes have advantages such as being biodegradable and less polluting. There is potential to utilize natural dyes on an industrial scale through improved processing techniques and consumer demand for more sustainable options. Research is also exploring extracting natural dyes from agricultural waste to further reduce environmental impacts. Natural dyes represent an eco-friendly alternative that could help mitigate climate change caused by hazardous synthetic dyes.
Different natural colors from Food waste.pptxSayanShee5
This document discusses the potential for using agricultural waste as a source of natural dyes. It notes that agricultural waste is produced in huge quantities each year and often improperly disposed of, harming the environment. However, these wastes contain compounds that can be used to extract natural dyes. The document examines research extracting dyes from various agricultural wastes like peanut skin, chickpea husk, pomegranate rind, and walnut husk to dye fabrics. While natural dyes from these sources face challenges like low dye yield and reproducibility, they provide benefits like being eco-friendly and generating additional income from waste utilization.
This presentation discusses the extraction and application of onion dye in textiles. It will introduce dyes, focus on natural dyes like those from onions, describe how to extract dye from onion skins, give recipes for dye baths using red or yellow onions, and demonstrate how the onion dye can be applied to cotton using a shibori dyeing technique. The document outlines the key steps for extracting onion dye from skins, creating dye baths, applying the dye to folded and bound cotton fabric, and presenting the final dyed textile.
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The document discusses natural dyes, which are extracted from various plant, animal, and mineral sources. Natural dyes are obtained from different parts of plants like roots, leaves, and flowers. While natural dyes were traditionally used, synthetic dyes have largely replaced them due to being more reliable, cheaper, and readily available. Natural dyes are non-toxic and biodegradable but produce softer shades than synthetic dyes and can be more expensive. Mordants are used to fix natural dyes to fibers and can affect the resulting color.
The document discusses natural dyes, which are extracted from various plant, animal, and mineral sources. Natural dyes are obtained from different parts of plants, including flowers, leaves, barks, seeds, and roots. Over 500 plant species have been identified as potential sources of natural dyes. While natural dyes were traditionally used, synthetic dyes are now more common because they are usually cheaper, more reliable, and readily available. Natural dyes have advantages such as being non-toxic, biodegradable, and producing soft shades, but they also have disadvantages like being time-consuming to extract and having limited availability.
The document discusses natural dyes, which are extracted from various plant, animal, and mineral sources. Natural dyes are obtained from different parts of plants, including flowers, leaves, barks, seeds, and roots. Over 500 plant species have been identified as potential sources of natural dyes. While natural dyes were widely used historically, synthetic dyes are now more common since they are usually cheaper, more reliable, and readily available. Natural dyes have advantages such as being non-toxic, biodegradable, and producing soft shades, but they also have disadvantages like being more expensive and time-consuming to extract.
This document discusses natural paints, including what they are made of and their benefits. Natural paints use ingredients like plant extracts, linseed oil, earth minerals and pigments instead of petrochemicals. They improve building health. Natural Earth Paint is highlighted, which uses natural earth and mineral pigments to make non-toxic art supplies. Their products include tempera paints, pastels, wall murals, casein paints, wood stains, and more. Instructions are provided for making wall mural paint and natural wood stains using earth pigments. Natural colors that can be made from plants are also listed. The advantages of natural colors include being renewable and safe, while limitations are cost and availability.
The document summarizes dyes used in traditional Rajasthani fabrics and modern synthetic dyes. In Rajasthan, natural dyes extracted from plants, flowers, and bark were traditionally used for tie-dye and block printing. Common natural dyes included lac, pomegranate, turmeric, and arjun. Bagru printing also uses natural dyes like lac, pomegranate, turmeric, and arjun. Modern dyes are typically synthetic and derived from coal or petroleum, including sulfur dyes, direct dyes, reactive dyes, acid dyes, disperse dyes, and basic dyes used for different fabrics. Indigo is now synthesized commercially from coal or oil rather
Eco-printing is a natural printing technique that uses plant materials like leaves, flowers, and berries to imprint designs and colors onto fabric. It was developed in the 1990s based on traditional natural dyeing and Japanese shibori techniques. The process involves arranging plant materials in a composition, soaking it in vinegar, wrapping the fabric around it, and boiling to transfer the color and pattern. Eco-printing produces unique, variable results and is a sustainable alternative to conventional printing methods.
We are Textile Engineer, we only apply dyes and pigment on textile substrate but we need to know how dyes and pigment manufacturing. I have details about all dyes manufacturing.
Spoorthi Kulkarni completed a chemistry project on dyeing fabrics with malachite green. The project involved dyeing wool and cotton cloth directly with the dye as well as using mordants like sodium carbonate, tannic acid, and tartaric acid for indirect cotton dyeing. Direct dyeing of wool produced a fast color while direct cotton dyeing resulted in a color that was not fast to washing and had low intensity. Indirect cotton dyeing using mordants produced a fast, high intensity color. The conclusion was that indirect dyeing is needed for cotton to produce a durable color from malachite green dye.
Textile dyeing involves applying color to textiles through dyes or pigments. Natural dyes were traditionally used but synthetic dyes developed in 1856 revolutionized the industry. Proper preparation of textiles through processes like desizing and scouring is important for ensuring even dye absorption and colorfastness. Water quality also impacts dyeing effectiveness. A variety of natural and synthetic dyes are used to color textiles for fashion and other purposes.
Natural dyes are colorants derived from plant, animal, or mineral sources that are used to colour textiles, paper, cosmetics, and food. They have been used for thousands of years in various cultures around the world, and have recently gained popularity due to their sustainability and environmental benefits
Webinar natural dyes-Career options in the Digital Agenivritysingh
Since this is an era of commercialization here is a webinar based on the usage of natural dyes where we have normally forgotten the use of natural products.
This document discusses eco-friendly textiles and sustainable textile processing. It defines eco-textiles as textile products that are produced and processed in an eco-friendly manner using renewable and non-toxic resources with minimal environmental impact. Key aspects covered include types of eco-friendly fibers like organic cotton and wool; natural dyes from plant, animal and mineral sources; sustainable practices like chemical substitution, recovery and process modification; and eco-friendly processes like enzymatic treatment, low water technologies, and supercritical CO2 dyeing. The document emphasizes moving from a 'cradle to grave' approach to a 'cradle to cradle' model of sustainability.
Natural dyes extracted from bark of Bombax ceiba Linn. locally known as semal...ijtsrd
Synthetic dyes are hazardous and carcinogenic and also release vast amount of pollutant in the environment emphasized for this purpose. Many natural resources which are being wasted during their manufacturing thus revival of natural dyeing techniques as one of the alternative is being indiscriminately or thrown away as a waste product contain useful dyes and pigments. In the present study, natural dye extracted from bark of Bombax ceiba Linn. locally known as semal and its application on pre treated fabrics like Cotton, Wool, Silk and Nylon have been carried out successfully. Different shades on various fabrics have been obtained. Dr.Yogesh Vadwala | Dr.Namrita Kola"Natural dyes extracted from bark of Bombax ceiba Linn. locally known as semal and its application on various fabrics pretreated with eco-friendly and noneco-friendly mordant" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-3 , April 2017, URL: http://www.ijtsrd.com/papers/ijtsrd76.pdf http://www.ijtsrd.com/chemistry/environmental-chemistry/76/natural-dyes-extracted-from-bark-of-bombax-ceiba-linn-locally-known-as-semal-and-its-application-on-various-fabrics-pretreated-with-eco-friendly-and-noneco-friendly-mordant/dryogesh-vadwala
Organic Hair Color is a certified organic hair dye made from natural herbs like henna, amla, and indigo. It provides natural hair coloring without harsh chemicals. Some key advantages are that it is 100% natural and safe for sensitive skin. The color lasts 2-4 weeks and develops fully over several days as the natural ingredients oxidize in the hair. Application takes at least 60 minutes to allow the herbs to develop color compared to chemical dyes. The product is certified organic by Ecocert and manufactured by Radico, an established multinational company specializing in natural hair colors.
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Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
2. Introduction
Nowadays the environment aspects of effluent treatment are too complicated problems in
processing industries. So due to overcome this problem, now a day’s eco-friendly process
is required. If we used the natural coloring matters with ecofriendly process, there is no
need of effluent treatment. Natural dyes are eco-friendly to the environment. All natural
dyes are not having good fixation to material.
Natural dyes:
Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The
majority of natural dyes are vegetable dyes from plant sources –roots, berries, bark, leaves,
and wood—and other organic sources such as fungi and lichens.
Dyeing Processes
The essential process of dyeing requires soaking the material containing the dye(the
dyestuff)in water, adding the textile to be dyed to the resulting solution (the dye bath), and
bringing the solution to a simmer for an extended period, often measured in days or even
weeks, stirring occasionally until the color has evenly transferred to the textiles.[9]
Direct Dye
Some dyestuffs, such as indigo and lichens, will give good color when used alone; these
dyes are called direct dyes or substantive dyes.
Mordant Dye
The majority of plant dyes, however, also require the use of a mordant, a chemical used to
"fix" the color in the textile fibers. These dyes are called adjective dyes.
Mordant
In traditional dyeing, the common mordents are
1. Vinegar,
2. Tannin from oak bark, sumac or oak galls,
3. Ammonia from stale urine,
3. 4. Wood ash or stale urine may have been used as an Alkali mordant.
5. Rhubarb leaves (which contain oxalic acid) Acidic mordant
6. Iron water can be used as a substitute to ferrous sulphate
7. Some plants, such as mosses and tea, contain a small amount of aluminum. This can be
used as a substitute to alum.
Common Natural dyes and its origin
4. Advantages of Natural Dyes:
1) Health and safety aspects of natural dyes: Though all natural dyes are not 100% safe
they are less toxic than their synthetic counterparts. Many of the natural dyes like turmeric,
annatto and saffron are permitted as food additives. Many natural dyes have
pharmacological effects and possible health benefits.
2) They are obtained from renewable sources.
3) Natural dyes cause no disposal problems, as they are biodegradable.
4) Practically no or mild reactions are involved in their preparation.
5) They are unsophisticated and harmonized with nature.
6) Many natural dyes have the advantage that even though they have poor wash fastness
ratings, they do not stain the adjacent fabrics in the washing process because of the non-
substantive nature of the dye towards the fabric. An exception to this is turmeric, which
shows substantively for cotton.
7) Natural dyes are cost effective
5. 8) It is possible to obtain a full range of colors using various mordents.
Types and Methods
Alum:
Available in most grocery stores and very safe to use; it's normal to add cream of
tartar to produce brighter, cleaner colors.
Dissolve the Alum (about 3 oz. per pound of fabric or yarn and 1 oz. cream of
tartar) separately in warm water.
Pour into a water bath of 4 gallons of water, heated to 160°. Add your fabric being
careful not to crowd.
Bring to a slow boil in about 30 minutes and then hold at that level of boil for 45
minutes.
Your fabric will take a better dye if you allow it to cool in the bath.
You can use it immediately, or let it dry.
Chemical name: potassium aluminum sulfate.
Chrome:
This gives wonderful deep, rich colors.
You have to be more careful with it, then the alum, to avoid uneven coloring later
on.
Adding cream of tartar will help brighten the colors even more. Use 1/2 oz. of
chrome with 4 gallons of water, to 1 pound of fabric or yarn.
Heat the water to 160°, and remember to pre-dissolve the chrome in warm water
first. Put your wet, washed fabric in the bath and simmer for 30 minutes.
Remove the fabric, add 1/2 oz. of cream of tartar (pre-dissolved) stir thoroughly,
replace the fabric and simmer for 1 hour.
Be careful to keep the fabric totally under the water in the bath, or when you do
dye your fabric it will streak.
Wash the fabric after mordanting in the chrome and allow it to dry slowly, before
dying.
If you're going to be dyeing the fabric lighter colors, you can use a bit less chrome.
Too much will result in a harsher feel to the fabric?
Chemical name: potassium dichromate.
Tin:
The most difficult of all the mordents metallic to use.
6. Too much will destroy your fabric or yarn. Its greatest use is as an aid to other
mordents, with bright, crisp yellows and reds resulting.
As an actual mordant, use 1/2 oz. tin, with 2 oz. cream of tartar and 3/4 oz. oxalic
acid - to one pound fabric or yarn in 4 gallons of water.
Heat the water to 140°, put in the wet, washed fabric and raise the temperature of
the bath to 190°. Hold at that level for 1 hour. Do Not Boil.
Chemical name: stannous chloride, tin crystals. Oxalic acid is Oxalic wood sorrel,
a bleaching or cleaning agent - very strong acid.
Dyeing procedure
Example:
Recipe for dyeing wool with onion skins
Fabric: applicable to wool or other animal (protein) fibers.
7. You will need:
• 100 grams of natural wool
• 30 grams of onion skins (use only the dry, brown, outer skins)
• 8 grams of alum (the mordant)
• 7 grams cream of tartar (the assistant)
• Some liquid detergent (the scouring agent)
• A water supply
2. Yellow Onion skins on alum mordant wool
8. You will need:
Yellow Onion skins on heuchera mordant wool.
Yellow Onion skins and garlic skins on unmordanted wool.
Yellow Onion skins and garlic skins on alum mordant wool.
Red Onion skins on unmordanted wool.
Red Onion skins on alum mordant wool.
Red Onion skins on heuchera mordant wool.
Dyeing with Bougainvillea
Applications
Ayurvastra
Ayurveda is a traditional and the most influential form of medicine native to India
originating from its Vedic traditions.
Ayurvastra is a fabric that is dyed as prescribed in the Ayurveda texts, using various
natural herbs like neem, Talsi, sida, turmeric, and sandalwood.
These fabrics are permeated with therapeutic herbs, and aromatic oils. They possess
medicinal properties, and are good for skin problems, headache, asthma, and many
other ailment
Antimicrobial Effect on Annatto Treated Material
Our cloth is producing pathogenic odor, bacteria, fungi and moulds. They include a variety
of microorganisms like bacteria, algae, fungi and virus. Microbes require certain conditions
to grow including dirt, perspiration, warm environment moisture and a receipting surface
9. like skin or fabrics. Textiles are carriers of microorganisms such as pathogenic bacteria,
odor generating bacterial, mould and fungi Annatto is a natural carotenoid obtained from
Bixa Orellana shrub. In Recent Years, the seeds are gaining economic importance as a
highly desirable colorant. The ripe fruits of annatto on drying yield annatto seed which
serves as the raw material for the production of annatto color. The coloring matter is
collected from the outer part of the seed. Annatto dye is non – toxic and is mainly used for
coloring edible products. It is used for only the purpose of coloring edible items like butter,
ghee, chocolates. Annatto is also used as an ingredients in medicine to cure fevers,
dysentery and kidney diseases. Now, it is mostly used to color the medicine like tablets and
capsule. And it is used to produce ointments for curing wounds. In India, it used as an insect
repellant.
It is a natural dye obtained from annatto tree. Annatto possess good substantive towards
cotton material and give orange color. If we use mordant means there is a chance of getting
color from light orange to orange red. It gives pleasant odor to textile material. Natural
herbal products can be used for antimicrobial composition to be the effective candidates in
bringing out herbal textiles. The plants and plant products are traditionally used for healing
Plant Profile:
Family Bixaceae
English name Arnott or Annatto plant
Indian name Sindarin (Sanskrit)
Sinduriya, Latkan (Hindi)
Rang male (Kannada)
Uragumanjal (Tamil)
Species Bixa Orellana
10. of wounds, burn-injuries and antimicrobial activity against skin infections. Several
medicinal plants are used for years in treating many diseases in daily life. Plants are reliable
source of potentially important bioactive natural products. The growing interest in herbs
and economically useful plant is part of the movement towards green economical life style.
Extraction of Annatto:
Annatto extracts can be found in many forms. It may be a power, paste, oil or as a chunk.
It can also be used in food for culinary enhancements and flavoring. The procedure to make
any of them is a little time taking as well as tedious. If annatto seeds are being used as it is,
it is not really tough. The seeds have a coating of an oily paste that coating bixin. Bixin is
a yellow orange carotenoid. It is extracted using aqueous alkaline solution and vegetable
oil solvent.
Vegetable oil solvent gives oil soluble bixin; alkaline solution gives water soluble norbixin
and propylene glycol yields a combination. For powder form, annatto seeds need to be
dried and cursed to extract the powder. Deriving the paste form needs addition of water,
vinegar and other herbs too at times. Annatto oil is available in flavored as well as
unflavored form. It needs putting a little bit of edible oil in annatto seeds. It is basically
reddish orange colored oil. Annatto oil is quite popular primarily in South America and it
is used for cooking in a number of cuisines.
Uses of Annatto
Mainly Latin American cuisines traditionally use annatto in recipes of Spanish
origin that originally call for saffron; for example, in Arroz con Polo, to give the
rice a yellow color.
In Venezuela, annatto (called locally onoto) is used in the preparation of halluces,
perico, and other traditionally dishes.
11. In Brazil, both annatto (the product) and the tree are called urucum and the product
itself may also be called color au. In the Caribbean islands, both fruit and tree are
popularly called achiote or bija instead of Bixa.
Annatto has been linked with many cases of food- related allergies, and is the only
natural food coloring. Because it is a natural colorant, companies using annatto may
label their products, “all natural colors” on the principal display panel (PDP).
IT’S well known that synthetic food color, expressly some azo dyes, can provoke
hypersensitivity reaction such as urticarial, antineurotic edema, and asthma
(Michaelson and Julian, 1973, granola and Thune, 1975).
Natural food colors are scarcely investigated with respect to potential allergic
properties. Annatto extract, a commonly used food color in edible fats e.g. butter,
has been tested in patients. Among 61 consecutive patients suffering from chronic
urticarial and/or antineurotic edema 56 patients were orally provoked by annatto
extract during elimination diet.
Calling was performed with a dose equivalent to the amount used in 25gm of
butter.26% of patients reacted to this color 4hour after intake. Similar challenges
with synthetic dyes showed the following result.
As a Food Coloring
The water soluble part is called norbixin, the fat soluble part of the crude extract is
called bixin and both share the same E number as annatto. Annatto seed contains
4.5-5.5% pigments, which consists of 70 – 80% bixin.
In the United States, annatto extract is listed as a color additive “exempt from
certification” and is informally considered to be natural color. The yellowish orange
color. The yellowish orange color is produced by the chemical compounds bixin
and norbixin which are classified as carotenoids. They do not have the correct
chemical structures to be vitamin A precursors unlike beta-carotene which is
another well-known carotenoid.
A higher level of bixin gives it a more reddish shade; the more norbixin in an
annatto color, the more yellow it is. It takes on a pink shade at low pH, unless an
acid-proof version is used.
Annatto has been linked with many cases of food-related allergies. It is the only
natural food coloring believed to cause as many allergic-type reactions as artificial
food coloring.
12. Materials and Methods:
Cotton fabric is used for applying the annatto dyes .The cotton fabric is soft fluffy stable
fiber, so the fabric when it placed on the surface of the skin our body gets feel cool,
relaxation, and feel so breathe freely.
Testing Methods:
1. Rubbing Fastness.
2. Washing Fastness
3.Anti-microbial test
Testing:
1. Rubbing fastness:
To determine the fastness of the dyed material due to rubbing of the material.
Two tests are prescribed, one with a dry rubbing cloth and the other with a wet
rubbing cloth.
Evaluate the degree of staining of the piece of undyed cloth with the geometric grey
scale (staining) and assign the ratings.
2. Washing Durability:
To determine the effect of washing fastness to the annatto dyed fabric.
A specimen of textile in contact with species of specified adjacent fabric is
mechanically agitated in soap solution, rinsed and dried.
13. The change in color of the specimen and the staining of the adjacent fabrics are
assessed with the standard grey scale.
3. Anti-microbial testing:
The term Anti-microbial points to a broad range of technologies that provide
varying degrees of protection for products and buildings against microorganisms.
So the annatto dyed material is analyzed for anti- microbial activity.
The test method is carried out using AATCC test method 147-1993, 1996(parallel
streak method).
Novel technologies in antimicrobial finishing are successfully employed in non-woven
sector especially in medical the bioactive fibers includes sanitary materials, surgical
threads, dressing materials and materials for filtration of gases and liquids, air conditioning
and ventilation, and special materials for food industry also. The Ultimate goal of this is to
create a color to the fabric and that will kill microbes’. But maintain all necessary textile
properties including durability and comfort properties.
References:
1. Collins, P. (1991). Annatto legislation in Europe. In: Proceedings of 1st
International symposium on Annatto; Campinas, Brazil; 17-21 June 1991; edited
by Carvalho, P.R.N. and Yabiku, H.Y. Campinas, Brazil: Instituto de Technology
de Alimentos.
2. Didrikson, C. (1991). Annatto on the European market. In: Proceedings of 1st
International Symposium on Annatto (see under Collins, P.).
3. International Trade Centre (1993). Annatto Seeds: Export Opportunities for the
Andean Region. Geneva: International Trade Centre.
4. Preston, H.D. and Rickard, M.D. (1980). Extraction and chemistry of annatto. Food
Chemistry, 5, 47-56.
5. Venter, M.W. (1981). The cultivation of Bixa Orellana (L.). Crop Production
(South Africa), 5(10), 87-89.
6. Wood, A.B. et al. (1991). Bikinied assay in annatto seed and its extracts: an
evaluation of methods and recommendations for sample handling. Paper presented
by Natural Resources Institute at the 1st Int. Symposium on Annatto, Campinas
Brazil, June 1991.