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Although nitrites are the nitrogen compound chiefly used in meat curing, nitrates are used in certain specialty curing processes where a long release of nitrite from parent nitrate stores is needed. The use of nitrates in food preservation is controversial.
Turns out most uncured meats still have nitrates/nitrites in themâthey just come from a natural source like celery powder. Theyâre labeled âuncuredâ and âno nitrates or nitrites addedâ because thatâs what USDA labeling laws require when naturally sourced nitrates/nitrites are used. According to a 2011 study, uncured meats may contain just as many nitrates/nitrites, if not more, than conventional meats.