益生菌是活的微生物添加剂,通过平衡肠道菌群有益于宿主的健康。益生菌都是自然菌群,可以在酸性环境中存活,可以抑制细胞粘附和病原菌的侵犯,通过发酵产物改变pH值进而改善肠道环境,它们还参与调节局部和全身性的炎症免疫应答。本文主要介绍 Probiotics are living microbiological additives that benefit the host’s health by balancing the gut flora. Probiotics are natural flora that can survive in an acidic environment that inhibits cell adhesion and pathogen invaders, altering the pH of fermentation products to improve the intestinal environment, and is also involved in the regulation of local and systemic inflammatory immune responses. This article mainly introduces