What is food preservation? Name three common chemical food preservatives. [3 MARKS]

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Solution

Definition: 1.5 Marks
Naming: 1.5 Marks

A process to prolong the life of food items by preventing their spoilage by action of microbes is called food preservation.

Common chemical food preservatives are:
1. Benzoates (such as sodium benzoate, benzoic acid)
2. Nitrites (such as sodium nitrite)
3. Sulphites (such as sulphur dioxide)
4. Sorbates (such as sodium sorbate, potassium sorbate.

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(b) How do you preserve cooked food at home ?

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(a) Name the constituents of food and give five examples of each.

(b) Name some fibrous foods.

(d) What are the various methods of preserving food?

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(f) Give the names of chemical preservatives.

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