Sumel e poster
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Oleosomes contain a triacylglyceride lipid core surrounded by a phospholipid membrane and embedded oleosin protein. This structure gives oleosomes stability but they can become destabilized by factors like temperature fluctuations, oxidation, and contaminants. There are several approaches that can be taken to improve oleosome stability, such as using antioxidants to prevent oxidation, cryo- and lyoprotectants to reduce leakage from the core, cross-linkers and encapsulation to decrease aggregation, and chelating agents to trap trace metals that cause oxidation. Successfully applying these approaches could allow oleosomes to be used as a drug delivery system to encapsulate lipophilic bioactive compounds.
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Basic oleochemical and its derivative
Oleochemical Technology. Production of fatty acids & glycerine starting from vegetable & animal oil and fats Hydrolysis is the basic production step, the fats and oils are split into crude glycerine and a mixture of crude fatty acids, under the combined action of water, temperature and pressure. The temperature exceeds 200°C and the products are kept under pressure for more than 20 minutes.. Fats & oils crude glycerine + crude fatty acids + water
3. • A process for the esterification of a triglyceride. • The process comprises forming a single phase solution of said triglyceride in an alcohol selected from methanol and ethanol, the ratio of alcohol to triglyceride being 15:1 to 35:1. • The solution further comprises a co-solvent in an amount to effect formation the single phase and a base catalyst for the esterification reaction. • After a period of time, ester is recovered from the solution. • Esterification is rapid and proceeds essentially to completion. • The esters may be used as biofuel or biodiesel
4. Glycerine (also called glycerin or glycerol) is an alcohol which is used as a moisturizer in soaps and lotions. Glycerine has a sweet taste, and it can be used as a food preservative and a non-sugar sweetener.
5. Glycerine Lubricants (jet engine, refrigeration) Plasticizer for Polyvinyl Butyral (PVB) Explosives Polyurethane Foam
6. Examples of Derivative
7. Process involves 1. A fatty acid or fatty acid mixture is esterified in a column reactor. 4. As the liquid flows down the trays it encounters progressively drier lower alkanol. 5. The ester product recovered from the bottom of the reactor has an ester content of at least 99 mole % (calculated on a lower alkanol free basis). 2. Relatively dry lower alkanol vapour (water content not more than 5 mole %) is injected into the bottom of the column reactor. 3. Water of esterification is removed from the top of the column reactor in the vapour stream, whilst ester product is recovered from the sump of the reactor.
6.structure and chemistry of fatty acids and lipids
This document provides an overview of lipid structure and chemistry. It begins by outlining learning objectives about lipids and their biomedical importance. It then defines lipids and discusses their characteristics. The document classifies lipids into simple lipids, compound lipids, derived lipids, and miscellaneous lipids. It describes the structures and functions of fatty acids, glycerol, phospholipids, glycolipids, and sterols. The roles of essential fatty acids and deficiencies are also summarized. The document provides details on lipid nomenclature and isomerism.
Lipids.pdf
Lipids include fats, oils, and waxes. Fats and oils are triglycerides composed of glycerol and three fatty acids. Fats are usually saturated and solid at room temperature, while oils are unsaturated and liquid. Fats and oils are extracted from plants through pressing or solvent extraction. Waxes also contain fatty acids but have higher molecular weight alcohols. Lipids have many applications including soaps, coatings, and supplements.
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Sumel e poster
- 1. Introduction: Cont. Stability Issues Cont. • Oleosomes are the oil containing microsphere that is made of Triacylglyceride lipid core which is phospholipid embedded that is enfolded by Oleosin protein. The hair pin like protein gives structural integrity to the oleosome. Sometimes destabilization of oil bodies occurs due to presence of Oil present in core, temperature fluctuation, chemical destabilization, presence of oxidative agents etc. There is need to improve the stability issues in the oil bodies & possible methods to overcome this problems. The major focus is to make the oil bodies stable & then to load bio actives into the oil bodies so that it can be used as carrier system in pharmaceutical industry. Tocopherol,Vit-E,Mn, iso-flavons are associated phytoconstituents present in Oleosomes. Leakage of oil from the core that makes hurdle to load any bio actives in it. Oxidation leads to rancidity oil bodies due to presence of trace metals,oxygen,light. Aggregation & Coalescence of the oil particles . Creaming problem due to thermal changes. Stability Issues Type extraction process leads to unstability. Due to presence of storage protein contaminants such as albumin, globulin Decomposition of Oleosin protein due to environmental stress. Low repulsion between oil particles leads aggregation due to gravitational force. Stability issues Title of the paper : APPROACHES TO STABILIZE MULTIFUNCTIONAL OIL CARRIERS : OLEOSOMES Author : Sumel Ashique*,Vineet Kumar Rai. Affiliation : Department Of Pharmaceutics,ISF College Of Pharmacy,Moga,Punjab Poster-ID: D-D05 Branch : Pharmaceutics Oleosin protein Oil core(TAGs) Phospholipid
- 2. Approaches to overcome Cont. Conclusion: Cont. By using cryoprotecta nts,lyoprotec tants such as sucrose, lactose. Leakage Use of multihydric alcohol leads to decrease leakage . By using beet pectin-laccase cross linker ,that adsorbed on the surface of oleosome. Leakage Encapsulation by dextrin,hydroc olloids decrease leakage of oil. • EDTA can be used which trap the trace metals that leads oxidation , • EDTA+ metals= chelate formation that prevent oxidation. Rancidity • Use antioxidants such as alpha tocopherol,tempol. • Use amboured colour containers to protect from light & oxygen. Oxidation By coating with negatively charged polysaccharide that improve total zeta potential & causes repulsion between two oil droplets which leads reduced sedimentation. Aggreg ation Washing with urea removes protein contaminants, maintain temerature,pH(acidic ) ,reduce shear force, coalescence can be removed by tempting surface charge,oxygen level must be minimum-use N2 purging. Others Here we have discussed about the reported as well as possible approaches to overcome stability issues of oleosome. After the successful application the potency of this carrier system will increase in DDS as it is possible to load any lipoidal bio actives in it which will be a great achievements in the field of pharmaceuticals. Oleosomes are also used in case of food industry .