The invention belongs to the technical field of functional
microorganism screening and application, and particularly discloses
bifidobacterium pseudolongum and application thereof. The strain number of the
Bifidobacterium pseudolongum provided by the invention is YBPL4, the YBPL4 strain is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC M NO: 20241895, and the preservation date is September 2, 2024. The invention also discloses a preparation method of the
Bifidobacterium pseudolongum, and the preparation method of the
Bifidobacterium pseudolongum provided by the invention has the advantages that the strain number is YBPL4, and the YBPL4 strain is preserved in the China Center for Type Culture Collection (CCTCC); compared with the prior art, the
bifidobacterium pseudolongum YBPL4 strain disclosed by the invention has the following unexpected technical effects that the
bifidobacterium pseudolongum YBPL4 with high
bile salt hydrolase activity disclosed by the invention simultaneously has multiple effects in an in-vivo experiment of a model mouse fed with high-fat feed, and the bifidobacterium pseudolongum YBPL4 strain can be used for preparing the bifidobacterium pseudolongum YBPL4 with high
bile salt hydrolase activity. The probiotics have the effects of promoting growth of intestinal
lactic acid bacteria, slowing down
weight gain, reducing
cholesterol and blood fat, improving the content of short-chain fatty acids such as
acetic acid, propionic acid,
butyric acid and
valeric acid in intestinal tracts, remarkably improving abundance of
lactobacillus and bifidobacteria, resisting
inflammation, improving
immunity and the like, and have great potential and practical value in the aspects of
probiotic development and
functional food application.