The compound used as a preservative for food products such as tomato ketchup and fruit juices is

sodium acetate

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sodium benzoate

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sodium salicylate

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formic acid

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Solution

The correct option is B sodium benzoate
Sodium Benzoate under certain conditions is converted into benzoic acid, which is bacteriostatic and fungistatic. Benzoic acid is absorbed into the cell and the intracellular $p H$ falls to 5 or below.

The anaerobic fermentation of glucose through phosphofructokinase decreases sharply, which inhibits the growth and survival of microorganisms that cause food spoilage.

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