Multiple choice

Among the following ------------------- is used to preserve sparkling drinks & soft drinks.

  1. potassium acetate

  2. potassium aluminate

  3. potassium ascorbate

  4. potassium benzoate
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D Correct answer
Explanation

Potassium benzoate, the potassium salt of benzoic acid, is a food preservative that inhibits the growth of mold, yeast and some bacteria. It works best in low-pH products, below 4.5, where it exists as benzoic acid. Acidic foods and beverages such as fruit juice (citric acid), sparkling drinks (carbonic acid), soft drinks (phosphoric acid), and pickles (vinegar) may be preserved with potassium benzoate.

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