Nitrites do all but one of the following, which one is it ?

Name: Nitrites do all but one of the following, which one is it ?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Nitrites are added to meat products as a preservative and to give the meat a pink color. They also inhibit bacterial growth. However, nitrites can react with amino acids in the meat to form harmful compounds called nitrosamines, which can cause off-flavors and potentially be carcinogenic. Nitrites are not naturally present in meat; they are added as a curing agent.

Nitrites Do All but One of the Following, Which One