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Food Spoilage & Food Preservation - Food Spoilage — Syllabus

Telangana Open School (TOSS) · Class 12 · Community Science (Home Science)

What Food Spoilage & Food Preservation - Food Spoilage covers in Telangana Open School (TOSS) Class 12 Community Science: 4 topics, for the 2026-27.

51 questions30 flashcards4 concepts

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4 Topics · Telangana Open School (TOSS) Class 12 Community Science (Home Science) · 2026-27

Topics in Food Spoilage & Food Preservation - Food Spoilage

1

What is Food Spoilage?

  • Food spoilage means the food is no longer safe or pleasant to consume.
  • It involves changes in colour, texture, smell, and taste of food.
  • Spoilage can be caused by microorganisms, enzymes, insects, chemicals, and physical damage.
2

Types of Food Spoilage

  • Microbial spoilage: Caused by bacteria, yeast, and moulds.
  • Enzymatic spoilage: Natural enzymes in food cause browning (e.g., cut apples turning brown).
  • Infestation: Insects, rodents, or parasites damage food.
3

Classification of Foods Based on Spoilage

  • Stable (Non-perishable) foods: Do not spoil easily (e.g., sugar, flour).
  • Semi-perishable foods: Spoil slowly if not stored properly (e.g., potatoes, apples).
  • Perishable foods: Spoil quickly and need preservation (e.g., milk, meat, fish).
4

Microorganisms Causing Food Spoilage

  • Bacteria: Cause souring, slime, and bad smell (e.g., Pseudomonas in meat).
  • Yeast: Ferment sugars into alcohol and CO₂ (e.g., in fruit juice).
  • Moulds: Grow as fuzzy patches and produce mycotoxins (e.g., Penicillium on bread).

Key Concepts

Central concept: Food Spoilage

Microbial SpoilageBiochemical ChangesTypes of SpoilageIntrinsic FactorsExtrinsic FactorsImplicit FactorsSources of MicroorganismsFood Classification by Perishability

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Frequently Asked Questions

What are the important topics in Food Spoilage & Food Preservation - Food Spoilage for Telangana Open School (TOSS) Class 12 Community Science (Home Science)?
Key topics in Food Spoilage & Food Preservation - Food Spoilage include What is Food Spoilage?, Types of Food Spoilage, Classification of Foods Based on Spoilage, Microorganisms Causing Food Spoilage. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Food Spoilage & Food Preservation - Food Spoilage for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 51 practice questions on Food Spoilage & Food Preservation - Food Spoilage. 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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