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प्रश्न
What are the changes that take place in food items due to freezing?
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उत्तर
- Breakdown of cell walls, leading to texture changes.
- Potential loss of some nutrients during freezing and thawing.
- Formation of ice crystals within food.
- Slowdown of microbial activity, preserving food.
- Alteration in flavour and colour of some foods after thawing.
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संबंधित प्रश्न
Name two important chemical preservatives permitted and popularly used in the preservation industry.
How do sugar and salt contribute to the preservation of food?
Choose the correct pair:
| A. Sun drying | 1. Potatoes, Onions, Yams |
| B. Convenience | 2. Rasin, chips, papad |
| C. Semi-perishable | 3. Meat, fish, chicken |
| D. Perishable | 4. Peas, Jam, Jellies |
Rohan’s dad has made apple jam. Which of the following must have been added to preserve it for a longer time?
Assertion (A): Evaporating moisture from food stuff prevents growth of microorganisms.
Reason (R): Most microorganisms cannot grow without water.
Assertion [A]: Green leafy vegetables kept in the refrigerator go limp and soggy.
Reason [R]: All green leafy vegetables are rich in high content of water.
Give two examples of foods that are preserved by the addition of sugar.
State the principle behind pickling as a method of preservation.
Describe the method of preserving foods by canning.
How should eggs and milk be stored at home to maintain their freshness for a longer period of time?
