Detection of 2-amino-1-methyl-6-(4-hydroxyphenyl)imidazo[4,5-b]pyridine in broiled beef.
作者信息
Kurosaka R, Wakabayashi K, Ushiyama H, Nukaya H, Arakawa N, Sugimura T, Nagao M
机构信息
Carcinogenesis Division, National Cancer Center Research Institute, Tokyo.
出版信息
Jpn J Cancer Res. 1992 Sep;83(9):919-22. doi: 10.1111/j.1349-7006.1992.tb02000.x.
Abstract
2-Amino-1-methyl-6-(4-hydroxyphenyl)imidazo[4,5-b]pyridine (4'-OH-PhIP) showed mutagenicity in Salmonella typhimurium TA98 in the presence of S9 mix, inducing 180 revertants per 100 micrograms. Since creatinine, tyrosine and glucose, which are present in meat, are expected to be involved in the formation of 4'-OH-PhIP, its presence in broiled beef was examined. 4'-OH-PhIP was detected in broiled beef by high-performance liquid chromatography and UV-spectrometry after extraction with 0.1 N HCl and purification by blue cotton treatment and ion exchange column chromatography. Its level was estimated to be 21.0 ng per g of broiled beef, which is comparable to that of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP).
摘要
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