Add time:09/05/2019 Source:sciencedirect.com
The mutagenicity of 3-TERT-BUTYL-4-HYDROXYANISOLE (cas 121-00-6) (BHA) and its metabolites was investigated in the reverse mutation assay using S. typhimurium strains and the chromosomal aberration test in vitro using a Chinese hamster fibroblast cell line, CHL. BHA, tert-butylhydroquinone (BHQ), tert-butylquinone (BQ) and BHA dimer (diBHA) did not show any mutagenic potential with and without S9 mix in the reverse mutation assay. In addition to the above 4 chemicals, 3-tert-butyl-4,5-dihydroxyanisole (BHA-OH), 3-tert-butylanisole-4,5-quinone (BHA-o-Q), and tert-butylquinone oxide (BQO) were tested in the chromosomal aberration test. BHA, BHQ and BQ induced chromosomal aberrations only in the presence of S9 mix, while BHA-OH, BHA-o-Q and BQO induced chromosomal aberrations only without S9 mix. DiBHA, however, showed no clastogenic potential with and without S9 mix. The present findings suggest that BHA-OH, BHA-o-Q or BQO may contribute to the clastogenicity of BHA in the presence of S9 mix.
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