Question

Potassium sulphite is used in preserving squashes and other mildly acidic foods because

 

Answer 1

Potassium sulphite is used as a preservative because it protects the food from going stale by stopping the growth of bacteria, mold and yeast. This happens because potassium sulphite reacts with water to produce sulphurous acid which lowers down the pH of the solution which does not permit the growth of these. It further helps to prevent the food discoloration which is especially useful when it comes to food items like squash. 

Answer 2

Potassium sulphite is used in preservation of food. This is because it prevents the growth of virus fungus and other microbes.  

Explanation:

• Potassium sulphite react with water present in the food to form sulfurous acid which makes the medium acidic making it difficult for the growth of bacteria and fungus.  

• Also potassium sulphite prevents the change in colour in fruits squashes Hence the shelf life of such fruit is increased. So it is used in preservation of food item.

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Potassium sulphite is used in preserving squashes and other mildly acidic foods because

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