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What are different methods of food preservation?

Important Questions on How Much Food - What Type of Food

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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
A method of preservation was suggested by Louis Pasteur. Which is this method? Explain
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation

Yash left a sandwich in his lunchbox over the weekend. When he opened the lunch box on Monday, he found a whitish, cotton-like growth on the surface of the bread.

What could have caused the change?

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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
What are two harmful effects of microorganisms?
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Temperature is a major factor that is involved in food preservation. Why excessive high and excessive low temperatures kill most pathogens?
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Give reasons for the following:
Milk gets spoiled quickly in summer.
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation

Yash left a sandwich in his lunchbox over the weekend. When he opened the lunch box on Monday, he found a whitish, cotton-like growth on the surface of the bread.
What other features of the sandwich would help Yash decide whether or not the sandwich is fit to eat?

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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Which of the following is a correct pair of bacterial disease and its causal agent?
I. Citrus canker — Xanthomonas citri.
II. Tundu of wheat — Corynebacterium tritici.
III. Blight of rice — Xanthomonas oryzae.
IV. Angular leaf spot of cotton — X. malvacearum.
V. Anthrax of cattle — Bacillus anthracis.
VI. Whooping cough — Bordetella pertussis.
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Name two food materials which are usually preserved by deep freezing.
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
How can food poisoning be caused? How will you detect that food is unfit for consumption?
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
List at least three things that helps us detect that food is unfit for consumption.
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
How does salt and sugar help in food preservation?
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
How does salt preserve food items?
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation

Yash left a sandwich in his lunchbox over the weekend. When he opened the lunch box on Monday, he found a whitish, cotton-like growth on the surface of the bread.
Do you think some milkshake left in a glass on the table for a few days would undergo a similar change? Why?

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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Name the common salt which is used as a preservative in pickles and in curing meat and fish. (Sodium chloride/ Sodium carbonate)
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Write two examples of diseases caused by bacteria.
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation

Yash left a sandwich in his lunchbox over the weekend. When he opened the lunch box on Monday, he found a whitish, cotton-like growth on the surface of the bread.
Do you think the sandwich might have been edible had Yash kept it in the refrigerator over the weekend? Why?

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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Name two fruits which are preserved:
In the form of pickles.
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Name two food materials which are preserved by using common salt.
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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation

Yash left a sandwich in his lunchbox over the weekend. When he opened the lunch box on Monday, he found a whitish, cotton-like growth on the surface of the bread.
What would have happened to the milkshake in the glass?

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Science>Biology>How Much Food - What Type of Food>Wastage of Food Items and Food Preservation
Have you ever seen a rotten slice of bread? What do you think might have caused the bread slice to rot?