Mutagenicity of nitrite-treated soy sauce in Chinese hamster V79 cells.

Mutagenicity of 4 kinds of Japanese soy sauce and tyramine, which is a precursor of a mutagen (3-diazotyramine) and present in soy sauce, after nitrite treatment under a yellow lamp was studied in Chinese hamster V79 cells with 6-thioguanine (TG) as a selective marker. The frequencies of mutation caused by nitrite-treated samples of soy sauce increased in… (More)