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蔬菜是一种易于富集硝酸盐的植物性食品。1907年Richardson首先发现蔬菜含有大量硝酸盐[4]。1943年Wilson指出蔬菜的硝酸盐可以还原成亚硝酸盐，人体摄入硝酸盐有81.2％来自蔬菜[4]。1956年Magee等人用二甲基亚硝胺诱发出了大鼠肝癌，而后Heath等人进一步证实亚硝胺是当前国内?
Vegetables are plant foods that are easily nitrate-enriched. In 1907 Richardson first found that vegetables contain large amounts of nitrate [4]. Wilson pointed out in 1943 that the nitrate of vegetables can be reduced to nitrite, and that 81.2% of the nitrate ingested by the human body came from vegetables [4]. 1956 Magee et al with dimethyl nitrosamines induced rat liver cancer, Heath et al then further confirmed nitrosamines is the current domestic?