Screening and Identification of Broadspectrum Bacteriocin-producing Lactic Acid Bacterium
产广谱细菌素乳酸菌的筛选和鉴定

The text has isolated 267 strains LAB from the traditional fermentative food in Sichuan. Using agar plate proliferation experiment and double-layer agar plate proliferation experiment (eliminating the effects of organic acid and H_2O_2, decreased after treatment with trypsin and papain) to screen a LAB of Bacteriocins P158 which has antibacterial action to Escherichia coli, Staphylococcus aureus, Micrococcus luteus, Pseudomonas aeruginosa, Bacillus subtilis. P158 was isolated from fermented glutinous rice. Through detection of its appearance, physiological and biochemical characteristics and 16S rDNA gene sequence homology analysis, it was identified as Lactobacillus plantarum.