Abstract: Disclosed herein is a method for promoting growth of a probiotic microorganism. The method includes cultivating the probiotic microorganism in a growth medium containing a fermented culture of lactic acid bacterial strains that include Lactobacillus salivarius subsp. salicinius AP-32 deposited at the China Center for Type Culture Collection (CCTCC) under CCTCC M 2011127, Lactobacillus plantarum LPL28 deposited at the China General Microbiological Culture Collection Center (CGMCC) under CGMCC 17954, Lactobacillus acidophilus TYCA06 deposited at the CGMCC under CGMCC 15210, and Bifidobacterium longum subsp. infantis BLI-02 deposited at the CGMCC under CGMCC 15212.

Abstract: A method for producing ?-aminobutyric acid includes cultivating, in a culture medium containing glutamic acid or a salt thereof, a probiotic composition including at least one lactic acid bacterial strain selected from the group consisting of Bifidobacterium breve CCFM1025 which is deposited at the Guangdong Microbial Culture Collection Center under an accession number GDMCC 60386, Lactobacillus acidophilus TYCA06, Lactobacillus plantarum LPL28, and Bifidobacterium longum subsp. infantis BLI-02 which are deposited at the China General Microbiological Culture Collection Center respectively under accession numbers CGMCC 15210, CGMCC 17954, and CGMCC 15212, Lactobacillus salivarius subsp. salicinius AP-32 which is deposited at the China Center for Type Culture Collection under an accession number CCTCC M 2011127, and combinations thereof.