• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.9
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• pp.1432-1438
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• 2004

This study investigated the inhibitory effect of methanol extracts and several solvent fractions from doen-jang on mutagenicity using in vitro SOS chromotest and in vivo Drosophila mutagenic system. In order to determine an antimutagenic effect of doenjang methanol extracts, other soybean fermented foods and original materials were compared. The treatment of doenjang methanol extracts (100 ${\mu}$/assay) to SOS chromotest system inhibited N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) induced mutagenicity by 87~97% and showed higher antimutagenic effect than other fermented foods. Among solvent fractions from doenjang methanol extracts, the ethylacetate and dichloromethane fractions showed the stronger antimutagenic effect (91% and 95%, respectively) in SOS chromotest. In Drosophila mutagenic system, the treatment of ethylacetate fraction (5%/bottle) significantly inhibited aflatoxin $B_1$ induced mutagenicity by 97%. These results demonstrated that doenjang had an inhibitory effect to mutagenic agents in both in vitro and in vivo mutagenic systems, suggesting that its antimutagenic effect may be due to active compounds in the ethylacetate fraction from doenjang methanol extracts.

• YAKHAK HOEJI
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• v.38 no.3
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• pp.332-337
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• 1994

Using germinal and somatic cell mutation assaying systems of Drosophila melanogaster, effects of Ginseng and Salvia miltiorrhiza extracts on the in vivo mutagenicity induced by N-methyl-N'-nitro-N-nitrosoguanidine(MNNG) were investigated. For these purpose, the attached-X method and the mwh/flr spot test system which are an X-linked lethal mutation and a somatic chromosome mutation assaying system, respectively, were used. In the induction of X-linked lethal mutations during the spermatogenesis, MNNG showed more actions in the sperm and spermatid stages, in which Ginseng and Salvia miltiorrhiza extracts had remarkable inhibitory effects than other stages. Ginseng and Salvia miltiorrhiza extracts reduced the mutagenicity by MNNG in the mwh/flr system, which reveal that they can inhibit gene mutation, deletion and mitotic chromosomal recombination. These results seem to suggest that Ginseng and Salvia miltiorrhiza extracts may exert their inhibitory effects to in vivo mutagenic and/or carcinogenic properties of DNA-damaging agents.

• Journal of Environmental Science International
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• v.8 no.5
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• pp.569-574
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• 1999

This study was carried out to determine the antimutagenic effects of genistein on the somatic mutagenicity induced by aflatoxin B1 (${AFB}_1$), using Drosophila wing spot test system. Mutagen alone or mutagen with genistein were administered to the heterozygous(mwh/+) third instar larvae by feeding, and somatic cell mutations were detected in adult fly wing hairs. Genistein did not show any mutagenicity with the feeding concentrations of 5~15% in the test system. As the feeding concentrations of genistein increased, genistein inhibited the mutagenicity induced by AFB1 (14.6%~62.2% inhibition rate), while as the concentrations of AFB1 increased, small much spots that arise mostly from chromosome deletion and nondisjunction were more strongly suppressed by genistein than the large mwh spots from chromosomal recombination. In each group of different AFB1 concentrations, the rate of inhibition for total mwh spots was dependent on the dose of genistein. These results indicate that genistein have inhibitory effect on the mutagenicity induced by a mtagen, ${AFB}_1$. It seems to suggest that genistein may exert inhibitory effects to mutagenic and/or carcinogenic properties of DNA damaging agents.