earticle

영어

Many people apply out of date yogurt on their face and share the effect of this on internet. Lactobacillus contained in yogurt is known to have the effect on skin whitening and preventing ages. Therefore, the research was designed in order to observe whether lactobacillus left in yogurt that was passed its expiration date can suppress the bacteria in face and prevent skin aging when applied to skin. Bacteria from face and nose were separated and were treated on solid media with yogurt solution absorbed into filter papers. As a result, the clean zones were observed near filter papers. Although the absorbance measured did not show the significant difference because lactobacillus and other bacteria were cultured together, based on the clear zones appeared near filter papers, it was hypothesized that lactobacillus was able to suppress the growth of skin bacteria. Moreover, as a result of treating separated face bacteria that can survive from acid condition, unlike lactobacillus in kimchi, L. sakei, the lactobacillus in yogurt did not show significant effect. However, active oxygen elimination ability through Fenton reaction was 59%, which is enough to remove active oxygen. Therefore, even after certain amount of time, lactobacillus exists in yogurt, thus it was hypothesized that this lactobacillus can help skin aging by suppressing the growth of bacteria and removing reactive oxygen.