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Food Processing and Technology — Revision Notes

CBSE · Class 12 · Home Science

Food Processing and Technology revision notes for CBSE Class 12 Home Science: 4 topics in quick points. Part of the CBSE Class 12 Home Science syllabus.

55 questions64 flashcards5 concepts

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A flowchart illustrating the general steps involved in food processing, from raw ingredients to finished products, highlighting key transformations.
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Key Topics to Revise

1

1. Meaning and Importance of Food Processing and Technology

  • Food processing means converting raw ingredients into finished or semi-finished products by using methods and techniques.
  • Food technology uses scientific, technical, social, and legal knowledge for the production, preservation, packaging, distribution, and safety of food.
  • Food science studies the composition of food, changes during handling and storage, causes of spoilage, and the principles behind processing.
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2. History and Development of Food Processing

  • Food preservation began in prehistoric times with methods such as sun drying, controlled fermentation, salting, pickling, candying, roasting, smoking, baking, and using spices as preservatives.
  • In 1810, Nicolas Appert developed the canning process.
  • In 1864, Louis Pasteur studied spoilage of wine and described how to avoid spoilage.
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3. Food Spoilage and Basic Preservation Principles

  • Food deteriorates because of physical, chemical, and biological changes.
  • Spoilage may cause off-flavours, bad texture, discoloration, loss of nutrients, and unsafe food.
  • Food can be spoiled by pests, insects, unsuitable temperature, too much light, oxygen, moisture, microorganisms, chemicals, and naturally present enzymes.
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4. Classes of Foods Based on Perishability

  • Perishable foods spoil quickly within one or two days.
  • Examples of perishable foods are milk, curds, fish, and meat.
  • Semi perishable foods can last for 1-2 weeks.

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Full Notes

Key Concepts

Food science applies chemistryFood processing is the setFood technology uses scientificFood manufacturing means mass productionA major step in food preservation

Frequently Asked Questions

What are the important topics in Food Processing and Technology for CBSE Class 12 Home Science?
Key topics in Food Processing and Technology include Meaning and Importance of Food Processing and Technology, History and Development of Food Processing, Food Spoilage and Basic Preservation Principles, Classes of Foods Based on Perishability. Study these first, then practise questions on each for the CBSE Class 12 board exam.
How should I revise Food Processing and Technology for the CBSE Class 12 board exam?
Learn the core ideas first, then work through the 55 practice questions on Food Processing and Technology. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All CBSE Class 12 Home Science Revision Notes

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