食品科学2025，Vol.46Issue(9)：121-129,9.DOI:10.7506/spkx1002-6630-20241031-196
具有生物保护潜力的耐低温乳酸菌筛选及其抑菌特性
Selection and Bacteriostatic Properties of Cryotolerant Lactic Acid Bacteria with Bioprotective Potential
摘要
Abstract
This study aimed to select cryotolerant lactic acid bacteria with bioprotective potential and to investigate their low-temperature adaptability and bacteriostatic properties.The results demonstrated that Pediococcus acidilactici L1 and Lactiplantibacillus plantarum HG1-1 exhibited a higher tolerance to low temperatures(4 and 7℃)when compared with Latilactobacillus sakei B2.In addition,they maintained high activities of superoxide dismutase and protease,as well as good morphological integrity.These two strains significantly inhibited the growth of common spoilage bacteria(Staphylococcus epidermidis,Acinetobacter baumannii,and Brochothrix thermosphacta)in meat products and their inhibitory capacity was substantially higher than that of the commercial strain L.sakei B2.The extracellular metabolites of the two strains retained antibacterial activity after heat treatment at 85℃.Trypsin treatment significantly decreased the bacteriostatic activity of the metabolites.Moreover,the bacteriostatic activity of both strains decreased as the pH level increased,disappearing at pH 7.In conclusion,both P.acidilactici L1 and L.plantarum HG1-1 have bacteriostatic activity under low-temperature conditions,showing potential as bioprotectants for low-temperature meat products.关键词
乳酸菌/低温适应性/抑菌性/生物保护菌/腐败菌Key words
lactic acid bacteria/low-temperature adaptability/antibacterial activity/bioprotective bacteria/spoilage bacteria分类
轻工纺织引用本文复制引用
杜文静,王强,陈倩,刘骞,孔保华..具有生物保护潜力的耐低温乳酸菌筛选及其抑菌特性[J].食品科学,2025,46(9):121-129,9.基金项目
国家自然科学基金面上项目(32372373) （32372373）
国家自然科学基金联合基金重点项目(U22A20547) （U22A20547）
