Comparative mutagenicity studies of AZO dyes and their reduction products insalmonella typhimurium
作者:
G. Krishna,
J. Xu,
J. Nath,
期刊:
Journal of Toxicology and Environmental Health
(Taylor Available online 1986)
卷期:
Volume 18,
issue 1
页码: 111-119
ISSN:0098-4108
年代: 1986
DOI:10.1080/15287398609530852
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The arabinose‐resistant and Ames assay systems of Salmonella typhimurium were used to evaluate the mutagenic potential of azo dyes and their aromatic amine reduction products. Azo dyes, namely direct black 38, direct blue 75, and direct red 2, were mutagenic in the arabinose‐resistant and Ames assays with both hamster and rat liver S9 activation. Both assays gave relatively higher mutagenic responses with hamster S9. Reduction products of these dyes, namely benzidine, o‐dianisidine, and o‐tolidine, were mutagenic in the Ames assay. Benzidine was weakly mutagenic and o‐dianisidine and o‐tolidine were nonmutagenic in the arabinose‐resistant assay. These results indicate that both arabinose‐resistant tester SV50 and Ames tester TA98 were sensitive in detecting mutagenicity of azo dyes. The use of the standard plate protocol with Ames tester TA98 is more efficient than the modified azo dye protocol in detecting mutagenicity of aromatic amine reduction products. Additional modifications in either the standard plate or modified azo dye protocols may improve detection of mutagenicity of these compounds in the arabinose‐resistant assay system.
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