The invention discloses a
lactobacillus casei
exosome capable of improving
skin aging and a preparation method of the
lactobacillus casei
exosome. The
lactobacillus casei is
lactobacillus casei RH99, and the preservation number of the
lactobacillus casei exosome is CGMCC (China General
Microbiological Culture Collection Center) No.32108. The
lactobacillus casei RH99 exosome prepared by the preparation method disclosed by the invention has relatively strong
acid resistance, and can be orally taken to reach the intestinal tract part; according to the prepared lactobacillus casei RH99 exosome, the ROS level in H2O2 induced
HaCaT cells can be reduced, the expression of collagen and
elastin genes COL1A1-ELN can be activated, the expression of
inflammation pathway related genes TNF-alpha and IL-6 can be reduced, and
inflammation damage can be reduced; the composition can inhibit the increase of MDA content in light aging
skin of mice, improve the activity of
antioxidant enzymes such as SOD, GSH-PX and the like, improve the content of HYP, increase the
moisture content of
skin and play a role in delaying
skin aging; the content of TNF-alpha, IL-6, IL-18 and IL-1beta
inflammatory factors in mouse serum can be reduced; the invention has important application significance and research value in preparation of products for preventing or improving skin
inflammation,
oxidative damage and
skin aging.