Multiple choice

Apples turn brown quickly. Which of the following calcium salts is used to keep apples fresh?

  1. Calcium ascorbate

  2. Calcium borate

  3. Calcium bromate

  4. Calcium chlorate
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A Correct answer
Explanation

Calcium ascorbate is a compound with the molecular formula CaC12H14O12. It is the calcium salt of ascorbic acid, one of the mineral ascorbates. As a food additive, it has the E number E302. Among its many uses is to keep apples fresh, so they do not turn brown quickly.

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