Preservatives used and their mechanism of action — task. Science State Board, Class 9.

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Choose all the appropriate options:

1. Which of the following is true of adding sugar as a preservative?

sugar's hygroscopic nature absorbs water from food
reduces the water content
shelf life of food is decreased
shelf life of food is increased

2. What is the function of spices like pepper and asafetida in preservation of foods?

Enhances the growth of microorganisms
Hygroscopic nature reduces the water content of food
Has bacteriostatic effects
Prevents the growth of microorganisms

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