The document discusses lyophilisation (freeze drying), which is a preservation technique used in the food industry to extend shelf life. It involves freezing the food, then reducing pressure to allow frozen water to sublimate from the food directly to a gas. This process does not damage heat-sensitive foods. The three steps are freezing, primary drying to remove 95% of water, and secondary drying to remove remaining water. A lyophilisation plant requires a drying chamber, vacuum system, cooling system and capacitors to collect water and facilitate the drying process. Freeze drying results in a very stable, lightweight product but is an expensive process best for high-quality foods.
Freeze drying, also known as lyophilisation or cryodesiccation, is a low temperature dehydration process which involves freezing the product, lowering pressure, then removing the ice by sublimation. This ppt give you insights of freeze drying and its working, advantages & disadvantages of it.
A drying process in which moisture is first converted to ice and then through reduced pressure and increase temperature it is directly converted to water vapor ( sublimation).
Complete process description, process parameters , types of freeze drying, case study of effect of different drying process on apple peels
Freeze drying, also known as lyophilisation or cryodesiccation, is a low temperature dehydration process which involves freezing the product, lowering pressure, then removing the ice by sublimation. This ppt give you insights of freeze drying and its working, advantages & disadvantages of it.
A drying process in which moisture is first converted to ice and then through reduced pressure and increase temperature it is directly converted to water vapor ( sublimation).
Complete process description, process parameters , types of freeze drying, case study of effect of different drying process on apple peels
Founded in 1988, Pyramid Laboratories, Inc., is a contract parenteral drug manufacturer and analytical provider that serves both the pharmaceutical and biotechnology industries. Among the Pyramid Laboratories, Inc., offerings is its equipment, including a laboratory-scale lyophilizer as well as a differential scanning calorimeter, along with a team of scientists to optimize the formulation of the product for lyophilization, also known as freeze-drying.
A stabilizing process in which a substance is first frozen and then the quantity of the solvent is reduced, first by sublimation (primary drying stage) and then desorption (secondary drying stage) to values that will no longer support biological activity or chemical reactions
Founded in 1988, Pyramid Laboratories, Inc., is a contract parenteral drug manufacturer and analytical provider that serves both the pharmaceutical and biotechnology industries. Among the Pyramid Laboratories, Inc., offerings is its equipment, including a laboratory-scale lyophilizer as well as a differential scanning calorimeter, along with a team of scientists to optimize the formulation of the product for lyophilization, also known as freeze-drying.
A stabilizing process in which a substance is first frozen and then the quantity of the solvent is reduced, first by sublimation (primary drying stage) and then desorption (secondary drying stage) to values that will no longer support biological activity or chemical reactions
Freezing has been successfully employed for the long-term preservation of many foods, providing a significantly extended shelf life.
The process involves lowering the product temperature generally to -18 °C or below.The extreme cold simply retards the growth of microorganisms and slows
down the chemical changes that affect quality or cause food to spoil.
During freezing the cellular solution present in the food matrix is cooled to its initial freezing point, and further cooling causes the water molecule to
separate, forming ice crystal.
The migration of water molecules during crystallization led to an increase in osmotic pressure, further enhancing the water permeability of the cell membranes. This transport of water molecules, if not controlled, can eventually affect the microstructure of the frozen produce.
The freezing process occurs in two successive steps, i.e,
” NUCLEATION” and “CRYSTAL GROWTH”.
There are various types of COLD ROOMS & REFRIGERATION available in the market and detailed information on their features will be helpful to decide the best one.
Cryogenic Processing refers to the use of expandable gaseous refrigerants, such as argon, oxygen, hydrogen, nitrogen, carbon dioxide and others, during freezing that at atmospheric pressure evaporate or sublime at very low temperatures.
In the food industry, the most popular cryogenic substances are nitrogen (N2) and carbon dioxide (CO2).
Cryoprocessing is the method that ensures proper hygiene and complete safety of the food product.
Conventional food processing techniques Uma Bansal
its a presentation based on conventional food processing techniques and it contains drying methods also along with freeze drying and concentration and evaporation.
The process of freeze drying with greater emphasis on the uses in the fisheries food processing sector. The presentation shows the process involved and the different steps involved and the effect of the process on the food material.
Butter processing involves churning cream to separate the butterfat from the buttermilk, then washing and kneading the butter to remove excess liquid and create a smooth consistency. Finally, the butter is usually shaped into blocks or sticks for packaging and distribution.
Beverages encompass a wide range of liquid refreshments, including hot and cold drinks like coffee, tea, soft drinks, juices, and alcoholic beverages. They serve various purposes, from hydration and enjoyment to cultural and social rituals.
Read more to learn. Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
An introduction to project management provides an overview of the principles and practices essential for successfully planning, executing, and completing projects. It covers key concepts such as defining objectives, resource allocation, risk management, and stakeholder communication, equipping individuals with the tools needed to lead projects efficiently and achieve desired outcomes within scope, time, and budget constraints.
Antimicrobial coatings and films are specialized surfaces applied to materials to inhibit the growth of microorganisms such as bacteria, fungi, and viruses. These coatings and films are used in various industries, including healthcare, food packaging, and construction, to enhance hygiene, extend product shelf life, and reduce the risk of infection and contamination.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
Active and intelligent packaging involves advanced technologies designed to extend shelf life, monitor freshness, and provide real-time information about the condition of food products. These packaging solutions not only enhance food safety and quality but also reduce waste by actively interacting with the contents and the environment, ensuring optimal preservation and communication throughout the supply chain.
"5S" plan in the office focuses on creating an organized, efficient, and clean workspace through five key steps: Sort (eliminate unnecessary items), Set in Order (organize essential items), Shine (clean the workspace), Standardize (establish norms), and Sustain (maintain discipline). This method enhances productivity, safety, and workplace morale.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
Crafting frozen delights demands meticulous processing: from sourcing premium ingredients to precision freezing techniques, ensuring each scoop delivers irresistible flavor and texture. Our commitment to excellence transforms mere desserts into memorable indulgences.
Efficient warehouse operations demand reliable equipment. From forklifts to pallet racks, our comprehensive selection of warehouse equipment ensures seamless handling, storage, and distribution, optimizing productivity and safety in every step of your supply chain.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
Lactic acid fermentation, a metabolic process, converts sugars into lactic acid, used in food preservation and production, contributing to the tangy flavor and texture in various fermented foods.
Evaporators are indispensable in the food industry, efficiently removing excess moisture from various products, extending shelf life, and enhancing flavor concentration. Their versatile applications ensure quality and safety standards are met, essential for delivering superior food products to consumers worldwide.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
The Global Food Safety Initiative (GFSI) fosters collaboration among food industry stakeholders to enhance food safety standards globally, ensuring consumer confidence and facilitating trade.
Climate change profoundly impacts food processing by altering agricultural yields, necessitating adaptation strategies, increasing production costs, disrupting supply chains, fostering innovation in preservation methods, and heightening food safety concerns.
Stay Ahead of the Curve with Our Weekly Food-Tech insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
https://www.pmg.engineering/
Efficient electrical panels streamline power distribution, ensuring safety and reliability. They regulate electricity flow, protect circuits, and facilitate troubleshooting. Essential in residential, commercial, and industrial settings, these panels are the backbone of modern electrical systems, optimizing energy usage and safeguarding infrastructure.
Frozen dessert refers to a delectable treat chilled to a frosty consistency, typically comprising ingredients like dairy, fruits, or alternative bases. It encompasses a diverse range of delights, including ice cream, sorbet, gelato, and frozen yogurt, offering a refreshing indulgence for all palates.
Unlocking the Secrets of Food & Beverage Industry: Dive into the Latest Tech-Knowledge in our Weekly Newsletter! Stay Informed, Stay Inspired!
https://www.pmg.engineering/
Change rooms and anterooms play vital roles in maintaining hygiene and safety standards within the food industry. Change rooms provide designated areas for employees to change into clean garments before entering production areas, while anterooms serve as transitional spaces, minimizing the risk of contaminants entering sterile zones. These facilities are essential for preventing cross-contamination and upholding strict quality control measures in food processing environments.
Cables are essential components of modern technology, facilitating the transmission of data, power, and signals across various industries. They come in different types, including fiber optic, coaxial, twisted pair, and Ethernet cables, each designed for specific applications.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
A vacuum circuit breaker is a high-performance electrical switching device designed to interrupt or make electrical circuits using a vacuum to extinguish the arc generated during switching operations.
Earthing, also known as grounding, is the process of connecting electrical systems to the Earth to prevent shocks, dissipate static electricity, and ensure safety in various applications.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
A Lightning Protection Unit safeguards structures from lightning strikes by providing a conductive path for the electrical discharge to safely reach the ground. It comprises rods, cables, and grounding systems designed to dissipate the immense energy of a lightning bolt.
Transformers are versatile machines that convert electrical energy from one voltage to another, essential for power distribution. Their efficiency and adaptability make them integral in various industries, from electrical utilities to electronics manufacturing.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
Carbonated beverages offer effervescent refreshment with a variety of flavors, providing a fizzy delight for consumers worldwide, embodying a perfect balance of taste, bubbles, and enjoyment.
Hygienic, durable flooring in the food industry ensures safety, compliance, and efficient operations. From non-slip surfaces to easy-to-clean materials, it's the foundation of food safety and quality assurance.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
Food surveillance typically refers to the monitoring, tracking, and analysis of food-related data for the purpose of ensuring food safety, quality, and security.
Food surveillance typically refers to the monitoring, tracking, and analysis of food-related data for the purpose of ensuring food safety, quality, and security.
Stay Ahead of the Curve with Our Weekly Food-Tech Insights: Your Gateway to the Latest Innovations, Trends, and Industry buzz!
Our concentrated milk products are packaged with precision and care to preserve their freshness and quality. Utilizing state-of-the-art packaging technology, we ensure leak-proof seals and optimal protection against external elements. From sturdy containers to tamper-evident closures, our packaging solutions guarantee convenience and reliability for consumers while maintaining the purity and nutritional value of our concentrated milk products.
Crafting authentic Kulfi is an art that blends tradition with innovation. Our Kulfi manufacturing process combines time-honored recipes with modern techniques to create indulgent frozen desserts rich in flavor and texture. With quality ingredients and meticulous attention to detail, each batch embodies the essence of India's culinary heritage, delivering a delightful taste experience that captivates palates worldwide.
Industrial conveyors are the backbone of efficient production processes, seamlessly transporting materials and products across various stages of manufacturing. With precision engineering and customizable designs, our conveyor systems optimize workflow, enhance productivity, and minimize downtime. From heavy-duty to specialized applications, we provide reliable solutions tailored to meet the unique needs of modern industries, ensuring seamless material handling from start to finish.
For precise pH analysis, state-of-the-art equipment is indispensable. Our advanced instrumentation includes pH meters and electrodes, ensuring accurate and reliable measurements across diverse samples. With intuitive interfaces and high sensitivity, our equipment empowers researchers and industry professionals to assess acidity and alkalinity levels with confidence, facilitating optimal decision-making and quality assurance in various applications.
Banana pseudostem, often overlooked, holds immense potential for sustainable resource utilization. Through innovative extraction methods and research, we unlock its diverse applications in various industries, from textiles to biofuels. Harnessing this natural resource not only minimizes waste but also fosters economic growth and environmental sustainability, paving the way for a greener and more prosperous future.
ISO 14000 sets the global standard for effective environmental management systems (EMS), emphasizing sustainability and regulatory compliance. By implementing ISO 14000, organizations demonstrate their commitment to minimizing environmental impact, improving resource efficiency, and fostering continuous improvement. This framework enables businesses to gain a competitive edge, build stakeholder trust, and contribute positively to environmental stewardship, shaping a more sustainable future for all.
Industrial fans play a vital role in various sectors, offering a range of types tailored to specific needs. From axial to centrifugal fans, each excels in distinct applications, providing efficient airflow and ventilation solutions. By understanding their unique capabilities and optimizing performance parameters, we ensure our industrial fans deliver reliable, high-performance operation, meeting diverse industry requirements with precision and effectiveness.
The performance of a centrifugal pump hinges on various key parameters such as flow rate, head, efficiency, NPSH (Net Positive Suction Head), and power consumption. By meticulously optimizing these factors through design, material selection, and operational adjustments, we ensure peak performance, reliability, and efficiency, fulfilling diverse pumping needs across industries while maintaining a steadfast commitment to quality and innovation.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
1. 1
PMG Engineering Private Limited
The End-to-End Engineering Company in Food Industry
info@pmg.engineering | www.pmg.engineering
Competent People. Smarter Work Systems. Exceptional Customer Interactions.
Lyophilisation
Freezing is a unit operation in which temperature of a food is reduced below its freezing point
(removal of sensible & latent heat of fusion), and a proportion of the water undergoes a change in
state to form ice-crystals. Immobilization of water to ice and the resulting concentration of
dissolved solutes in unfrozen water lowers the water activity of the food. Lowering of temperature,
lowers the microbial activity as well as suppresses the chemical reactions in the food. Generally,
we find two type of freezing method, quick freezing and slow freezing. In slow freezing, food
products are introduced to low temperature for relatively longer time duration and hence the ice
crystal formed are of larger in size, which are sometimes not at all desirable depending on
characteristic of food product. In quick freezing, relatively even lower temperature is used for food
product but exposure time is less. Hence the ice crystal formed are of smaller size. Even though
small ice crystal formed during quick freezing helps in preserving the texture and other
characteristic of product, sometimes it may cause to temperature shock to product. Choosing the
method of freezing is hence of utmost importance.
Sometimes known as freeze drying, lyophilisation is a preservation technique extensively used in
food industry for preserving food material and for prolonging shelf life. Freeze drying technique
is a non-thermal preservation technique used for majorly heat sensitive food product. Freeze drying
employs treatment of food product in controlled temperature to preserve the main characteristic of
product that can be lost in case exposed to uncontrolled condition. Freeze drying can be highly
effective for preservation of wide range of product including fruits, vegetables, meats, flavours,
herbs, coffee etc. Temperature used in lyophilisation is between -50 to -80 deg. C and product can
be kept as such, without any characteristic changes for several years in case of unopened condition
and can last for at least few days after opening if stored in refrigerated condition.
2. 2
PMG Engineering Private Limited
The End-to-End Engineering Company in Food Industry
info@pmg.engineering | www.pmg.engineering
Competent People. Smarter Work Systems. Exceptional Customer Interactions.
Lyophilisation Technique
In lyophilisation, temperature of product is brought down to such a low temperature where the
solid, liquid and vapour coexists, which is also known as triple point. In this process the initial
liquid solution or suspension is frozen, the pressure above the frozen state is reduced and the water
removed by sublimation. Thus a liquid –to-vapor transition takes place. If, however, solid ice is
maintained at a pressure below the triple point then on heating the ice will sublime and pass directly
to water vapor without passing through the liquid phase.
Lyophilisation involves three steps, involving freezing, primary drying and secondary drying.
1. Freezing: Free water present in product is freezed to change its state from liquid to solid.
Product is freezed below its triple point. Reason for bring down temperature to triple point
is that it helps in the next step of the process. Freezing is the most important step of
lyophilisation and it is preferred to have larger crystals to easily sublime it.
2. Primary Drying: Second step involves lowering of pressure and providing enough heat to
sublime the ice to vapour form. It gets easy due to the product existing in its triple point
temperature. In this primary drying phase, about 95% of the water in the material is
sublimated. In industrial level, this is most time taking process as slightly higher
temperature can lead to deterioration of texture of product. Controlled pressure act as
catalyst for sublimation.
3. Secondary Drying: Then comes secondary drying, which primarily focus on the removing
of unfrozen water. The temperature is raised higher than in the primary drying phase, and
the pressure is also lowered in this stage to encourage desorption. Before sealing the
product in packages, it is treated with inert gas to break the formed vacuum. For food
product, nitrogen gas is used.
3. 3
PMG Engineering Private Limited
The End-to-End Engineering Company in Food Industry
info@pmg.engineering | www.pmg.engineering
Competent People. Smarter Work Systems. Exceptional Customer Interactions.
Industrial Requirement:
A lyophilisation plant consists of:
1. Drying chamber having temperature controlling plates
2. Capacitor to collect the water coming out of the product in the drying chamber
3. Cooling system
4. Vacuum system to reduce the pressure in the room
5. Capacitor for the drying process.
4. 4
PMG Engineering Private Limited
The End-to-End Engineering Company in Food Industry
info@pmg.engineering | www.pmg.engineering
Competent People. Smarter Work Systems. Exceptional Customer Interactions.
The food product is firstly freezed to its freezing point, even liquid product is freezed below their
freezing point. Then they are placed in the drying chamber where temperature of the chamber is
set according to the product to be freezed and is always below 0 Deg. C. Applied vacuum facilitates
ice evaporation which again lower the temperature of the product which are compensated by
heating the product a bit by means of heating plate. The vapour evaporated is again freezed and
during the process, freed water is drained.
Pros and cons with Freeze drying
Due to low temperatures, the chemical decomposition, particularly hydrolysis is minimized. There
is no concentration of solution prior to drying. Hence, salts do not concentrate and denature
proteins, as occurs with other drying methods. Again the basic importance or need for
lyophilisation is due to decrease in weight and bulk of the product which helps in handling of bulk
material during storage or transportation. Shelf life of product increases by reducing the microbial
attack and self-metabolic activity.
Even Lyophilisation have their own limitation as it yields a very hygroscopic product and makes
it difficult to maintain the required storage condition at every step. It is also very time taking
process and the processing plant very complicated making it very expensive and can be used of
higher quality product. Though it beneficial for heat sensitive product but again it can be used for
certain types of products only. Chance of deterioration of fatty tissue by rancidity is the major
drawback to the sensory values.
People having less time due to busy schedules are looking for alternatives to time taking cooking.
For this purpose, product with longer shelf life are required which need to be coupled with less
price. In larger food industries freeze drying are helping with convenient bulk handling of products
and long shelf life which are the basic and most important requirement. Freeze drying segment is
thriving on the basis of introduction of new technology, product type and innovation in packaging
for holding freeze dried product. Increasing demand of canned and frozen products supports the
growth of frozen food industry.