代谢
从人类肠道中分离的大肠杆菌W3110菌株对5种二硝基甲苯同分异构体(2,3-、2,4-、2,5-、2,6-和3,4-DNT)产生的代谢物已被鉴定。通过薄层色谱、气相色谱或液体闪烁计数法获得的数据表明,大肠杆菌产生的代谢物在所有情况下都是2种单氨基硝基甲苯和羟基氨基硝基甲苯。这一发现表明,在大肠杆菌中,二硝基甲苯通过羟基氨基硝基甲苯还原为单氨基硝基甲苯。另外,二硝基甲苯同分异构体的还原活性为2,3-DNT中的3- > 2-,2,4-DNT中的4- > 2-,2,5-DNT中的5- > 2-,以及3,4-DNT中的3- > 4-。
The metabolites produced from 5 dinitrotoluene isomers (2,3-, 2,4-, 2,5-, 2,6- and 3,4-DNT) by Escherichia coli strain W3110, isolated from human intestine, were identified. Data obtained from thin-layerand gas chromatography or liquid scintilation counting indicated that the metabolites produced by the Escherichia coli were 2 monoaminonitrotoluenes and hydroxylaminonitrotoluenes in all cases. This finding indicates that dinitrotoluene is reduced via hydroxylaminonitrotoluenes to monoaminonitrotoluenes in Escherichia coli. In addition , the reduction reactivities of Dinitrotoluene isomers were 3- > 2- for 2,3-DNT, 4- > 2- for 2,4-DNT, 5- > 2- for 2,5-DNT and 3- > 4- for 3,4-DNT.
来源:Hazardous Substances Data Bank (HSDB)