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  • Title: Identification of methylglyoxal as a major mutagen in wood and bamboo pyroligneous acids.
    Author: Onoda A, Asanoma M, Nukaya H.
    Journal: Biosci Biotechnol Biochem; 2016 May; 80(5):833-9. PubMed ID: 26872409.
    Abstract:
    To identify the major mutagen in pyroligneous acid (PA), 10 wood and 10 bamboo pyroligneous acids were examined using the Ames test in Salmonella typhimurium strains TA100 and TA98. Subsequently, the mutagenic dicarbonyl compounds (DCs), glyoxal, methylglyoxal (MG), and diacetyl in PA were quantified using high-performance liquid chromatography, and the mutagenic contribution ratios for each DC were calculated relative to the mutagenicity of PA. Eighteen samples were positive for mutagens and showed the strongest mutagenicity in TA100 in the absence of S9 mix. MG had the highest mutagenic contribution ratio, and its presence was strongly correlated with the specific mutagenicity of PA. These data indicate that MG is the major mutagen in PA.
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