微生物在pH 3.5条件下加速亚硝胺的形成。
Acceleration of nitrosamine formation at pH 3.5 by microorganisms.
作者信息
Archer M C, Yang H S, Okun J D
出版信息
IARC Sci Publ (1971). 1978(19):239-46.
PMID:28279
Abstract
Rate enhancements of from 12 to 49-fold occurred when dihexylamine was nitrosated at pH 3.5 in the presence of bacteria and yeast cells at a concentration of 12 mg/ml. Rates were similar in the presence of either boiled or unheated cells. The magnitude of the rate enhancement for nitrosation of other amines depended on the alkyl chain length. A nonenzymatic mechanism involving hydrophobic interactions of the precursor amines and cellular constituents is proposed.
摘要
当二己胺在pH 3.5、存在浓度为12 mg/ml的细菌和酵母细胞的条件下进行亚硝化时，反应速率提高了12至49倍。在存在煮沸或未加热细胞的情况下，反应速率相似。其他胺类亚硝化反应速率提高的幅度取决于烷基链长度。提出了一种涉及前体胺与细胞成分疏水相互作用的非酶促机制。
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