Antimutagenic activity of Lactobacillus plantarum KLAB21, isolated from Korean kimchi, was investigated against MNNG (N-methyl-N′-nitro-N-nitrosoguanidine), NQO (4-nitroquinoline-1-oxide), NPD (4-nitro-O-phenylenediamine) and aflatoxin B1 using Salmonella typhimurium strains TA100 and TA98. Although all the cell fractions including the culture supernatant, dry cells and cell-free extract exhibited antimutagenic activity against MNNG and NQO, the culture supernatant possessed the highest activity. The antimutagenic ratio of the culture supernatant was 98.4% against MNNG on strain TA100 and 57.3% against NQO on strain TA98. Its antimutagenic activity was reconfirmed by a Bacillus subtilis spore-rec assay. Levels of the antimutagenic ratios of other lactic acid bacteria originating from fermented milk ranged between 26.8 to 53% against MNNG and 28.5 to 43.4% against NQO. The antimutagenic activities of the strain KLAB21 against NPD were 72.6% on TA100 and 62.8% on TA98, and those against aflatoxin B1 were 82.5% on TA100 and 78.2% on TA98.
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Park, H., Rhee, C. Antimutagenic activity of Lactobacillus plantarum KLAB21 isolated from kimchi Korean fermented vegetables. Biotechnology Letters 23, 1583–1589 (2001). https://doi.org/10.1023/A:1011921427581
- Korean kimchi
- Lactobacillus plantarum KLAB21