Abstract
We conducted a screening and checked the cultivation methods of lactic acid bacteria, which have anti-atopic dermatitis functions, by determining the lactic acid bacteria's immune enhancement by FACS, and antimicrobial activity against Staphylococcus aureus. The increase of Tcell CD4+/CD25+/foxp3+ was bigger in Lactobacillus plantarum than Lactococcus lactis subsp. lactis (Lc. lactis) and the antimicrobacterial activity against S. aureus was the opposite. The antimicrobial activity of Lb. plantarum culture with medium containing Lc. lactis culture broth was not enhanced, but the antimicrobial activity of Lc. lactis cultured in a medium containing Lb. plantarum culture broth was enhanced. As the optimal method caltivation of Lc. lactis in a medium containing 10% of heat-killed Lb. plantarum culture broth was chosen. By this method, the antibacterial activity of the pure Lc. lactis culture increased sharply at the end of the log phase, while a restraint effect on the growth of S. aureus increased 1.29 times.
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