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KMID : 0380620210530060785
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Korean Journal of Food Science and Technology
2021 Volume.53 No. 6 p.785 ~ p.791
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Bioconversion of nitrogen oxides and reduction of ferric ions by probiotic lactic acid bacteria
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Kim Se-Lim
Hong Jung-Il
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Abstract
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Many lactic acid bacteria (LAB) have probiotic properties that exert various health benefits. In this study, the reduction potential of nitrogen oxide compounds and ferric ions by six LAB, including Lactobacillus kimchicus, L. lactis, L. casei, L. plantarum, L. rhamnosus GG, and Leuconostoc mesenteroides were evaluated. The L. kimchicus strain produced a substantial amount of nitrite reduced from nitrate added to the media, whereas the other five LAB strains did not. L. kimchicus also showed the most potent reducing activity of ferric to ferrous ions. However, the reduction potential of the autoclaved L. kimchicus was little pronounced. The scavenging activities of viable LAB or their cell lysates against different radicals were not consistent with the potency of the LAB's reducing ability. The present results indicate that L. kimchicus has a strong reduction potential for nitrogen oxides in viable status, and that this ability can be used as a probiotic property for various health benefits.
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KEYWORD
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lactic acid bacteria, Lactobacillus kimchicus, probiotics, nitrogen oxide, reduction potential
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