Food Processing And Technology | Class 12 Home Science Notes
By ConceptScroll Team · Published on 17 July 2026 · 4 min read
Food Processing And Technology – this guide gives you a concise, exam-ready overview of Food Processing And Technology from Class 12 Home Science, written by ConceptScroll editors and reviewed against the latest NCERT textbook.
FOOD PROCESSING AND TECHNOLOGY
Food processing and technology is a multidisciplinary field that involves transforming raw food materials into finished or semi-finished products through scientific methods and techniques. Historically, food processing began with simple methods such as drying grains to increase shelf life and preserve food for continuous supply. In India, traditional preserved foods like pickles, murabbas, and papads are examples of early food processing. Over time, with advances in transportation, communication, and industrialization, consumer demands have evolved to include fresh, organic, safer, healthier foods with longer shelf life and specific sensory qualities such as taste, texture, and consistency. This evolution has driven scientists and technologists to develop innovative processing methods that retain nutrients and meet consumer expectations. Today, processed foods range from simple traditional items to ready-to-eat meals produced on a large scale using advanced technologies. The Indian food industry has grown significantly, ranking fifth globally in size and contributing nearly 6% to the GDP. Changes in lifestyle, globalization, and health awareness have further increased the demand for processed foods, necessitating continuous research and development in food technology. Fortification of staple foods with essential nutrients like iodine, folic acid, vitamin A and D is an important aspect to combat nutritional deficiencies. Additionally, modifications such as reducing calorie content using artificial sweeteners and replacing fat with proteins in ice creams demonstrate how food technology adapts to health trends. Consumer preference for chemical-free, pesticide-free, and preservative-free foods with natural flavor and appearance has also influenced the development of food processing technologies. Overall, food processing and technology is a vital discipline that supports food security, nutrition, and economic growth while offering diverse career opportunities.
📊 Diagram: The chapter includes images showing various processed foods such as pickles, papads, and ready-to-eat items illustrating traditional and modern food processing.
🔗 Connection: This introductory section sets the stage for understanding the basic concepts of food science, processing, and technology discussed in the next section.
Frequently asked questions
1. Explain the following terms: (A) Food Science (B) Food Processing (C) Food Technology (D) Food Manufacturing and (E) Food Spoilage
A) Food Science: It is the study of the physical, biological, and chemical makeup of food and the concepts underlying food processing and preservation.
B) Food Processing: It refers to the methods and techniques used to transform raw ingredients into food products that are safe, palatable, and have a longer shelf life.
C) Food Technology: It is the application of food science to the selection, preservation, processing, packaging, distribution, and use of safe food.
D) Food Manufacturing: It i
2. Explain briefly the significance of Food Technology. How has it affected the life of modern housewives, specially working women?
Food Technology is significant because it helps in preserving food, enhancing its nutritional value, ensuring food safety, and making food available throughout the year. It has introduced convenience foods, ready-to-eat meals, and packaged foods which save time and effort.
For modern housewives, especially working women, food technology has made meal preparation easier and faster, allowing them to balance work and home responsibilities better. It has reduced the need for daily cooking from scra
3. List some of the old methods of food preservation followed at home giving examples and their viability in present times.
Some old methods of food preservation include:
- Drying: Sun drying of grains, pulses, and fruits like mango slices. Still viable and widely used.
- Salting: Preserving fish and meat by applying salt. Used less now due to health concerns.
- Pickling: Using vinegar or salt to preserve vegetables and fruits. Still popular.
- Smoking: Used for fish and meat preservation. Less common now.
- Cooling: Using cellars or underground storage to keep food cool. Replaced by refrigeration.
Viability today d
4. Give a brief account of development of food preservation to its present status.
Food preservation has evolved from traditional methods like drying, salting, and pickling to advanced scientific techniques. The discovery of refrigeration and freezing revolutionized preservation by slowing microbial growth. Canning and vacuum packaging extended shelf life significantly. Modern methods include pasteurization, irradiation, use of preservatives, and modified atmosphere packaging. These developments ensure food safety, reduce spoilage, and maintain nutritional quality.
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