This invention belongs to the field of microbial technology and discloses a strain of *
Lactobacillus facultativeus* TA15 and its application in the
fermentation preparation of red sour soup. The strain is *
Lactobacillus facultativeus* (TA15). Levilactobacillus zymae TA15 was deposited at the Guangdong Provincial Microbial Culture Collection Center (GDMCC) on May 19, 2025, with accession number GDMCC No. 66351. This strain has a strong acid-producing capacity, effectively reducing
cholesterol and
triglyceride levels. It also possesses excellent acid and bile
salt resistance,
cell surface characteristics, and antibacterial properties, meeting food-grade safety requirements. Its application in the
fermentation of red sour soup effectively increases the product's acidity and shortens the
fermentation cycle. The
total acid content of the resulting fermented product reaches 15.75 g / kg, demonstrating promising application prospects in the
functional food field.