The invention discloses a
Lactobacillus paracasei CCFM1455 strain, a
polysaccharide prepared from the
Lactobacillus paracasei CCFM1455 strain for promoting
gastric mucosa repair and application of the
Lactobacillus paracasei CCFM1455 strain in synergism with rhizoma polygonati, and belongs to the technical field of microorganisms and medicines. According to the
lactobacillus paracasei CCFM1455 exopolysaccharide disclosed by the invention, by regulating an STAT3 / SOCS3
signal channel, the levels of gastric
mucosal lesion markers PGE2 and TFF3 are remarkably reduced, the expression of
inflammatory factors is regulated, and gastric barrier protection and
inflammation relief are realized. In addition, when the strain is used for fermenting
polygonatum sibiricum, double synergistic effects can be generated: (1)
macromolecular substances such as
polygonatum sibiricum
saponin are biologically converted, and easily absorbed micromolecular active substances such as
oleanolic acid and liukucoumarin are generated; (2)
polygonatum polysaccharide is converted into high-activity compound
polysaccharide, so that the
mucous membrane repairing synergistic effect is enhanced; therefore, the
lactobacillus paracasei CCFM1455 and the
fermentation derivative thereof provide an innovative solution for targeted intervention of gastric
mucosal lesion and modernization of traditional Chinese medicines.