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Food Poisoning

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Question

Give a reason why pasteurization is used to preserve milk.

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Solution

Pasteurization is used to preserve milk because when milk is heated to about $70 ° C$ for $30$ minutes and cooled quickly as this kills the microorganisms and does not affect the flavour of the milk due to heating.

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Q. Pasteurization means boiling the milk to kill germs. Do you agree? Give reasons.

Q. Complete the following statements by using the correct option from those given below.
(Irradiation, dehydration, pasteurization, natural, chemical)
(a) Drying the food grains from farms under the hot sun is called .......... .
(b) Materials like milk are instantly cooled after heating up to a certain high temperature. This method of food preservation is called .......... .
(c) Salt is a .......... type of food preservative.
(d) Vinegar is a .......... type of food preservative.

Pasteurization is a technique of preserving food, especially milk.

Milk can be preserved by_________ (pasteurization/salting) technique.

Q. Why does the milk that comes in packets not spoil My mother told me that the milk is 'pasteurized'.What is pasteurization?

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