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Food Spoilage & Food Preservation - Food Spoilage

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

Quick revision notes for Food Spoilage & Food Preservation - Food Spoilage — Telangana Open School (TOSS) Class 12 Community Science (Home Science). Key concepts, formulas, and definitions for last-minute revision.

51 questions30 flashcards4 concepts

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Key Topics to Revise

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).

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Full Notes

Key Concepts

Food spoilage can occur dueBacteriaMicrobes break down food componentsIntrinsic factors are natural properties

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)?
Food Spoilage & Food Preservation - Food Spoilage covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Food Spoilage & Food Preservation - Food Spoilage — Telangana Open School (TOSS) Class 12 Community Science (Home Science)?
Understand the core concepts first, then work through the 51 practice questions available for this chapter. Revise formulas and 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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