THE PRESENCE OF 2-AMINO-3,8-DIMETHYLIMIDAZO[4,5-F]QUINOXALINE IN SMOKED DRY BONITO (KATSUOBUSHI)

  • 1 February 1986
    • journal article
    • research article
    • Vol. 77  (2) , 99-102
Abstract
Smoked dry bonito (katsuobushi), an everyday food item for most Japanese people, was found to contain 2-amino-3,8-dimethylimidazo[4,5-f] quinoxaline (MeIQx), the content of which was estimated at about 2 ng/g. This content is similar to the known MeIQx content of cooked beef. The katsuobushi also contained another mutagenic component, the total activity of which was 1/6-1/3 that of the MeIQx. This component was similar to 2-amino-3,4,8-trimethylimidazo[4,5-f] quinoxaline (4,8-DiMeIQx) with respect to its behavior in high-pressure liquid chromatography and its ultraviolet absorption spectrum.