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嗜酸乳杆菌及其代谢产物对致病菌的抑菌研究

Study on Bacteriostasis of Lactobacillus acidophilus and Its Metabolites to Pathogenic Bacteria
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摘要 嗜酸乳杆菌是乳酸菌的一种,属同型乳酸发酵类型,可以调整肠道中的菌群平衡,其分泌的代谢产物对致病菌可以产生抑菌作用。代谢产物中含有丰富的乳酸、乳酸菌素等成分,可以降低动物肠道的pH值,快速抑制有害菌的繁殖。本文用一株分离得到的嗜酸乳杆菌进行研究,发现其产酸能力强,在MRS培养基中pH最低可以达到3.60,代谢产物耐热稳定性好,在最高100℃水浴处理10min后抑制致病菌的效果没有明显变化。 Lactobacillus acidophilus is a kind of lactic acid bacteria,which belongs to the same type of lactic acid fermentation.It can adjust the balance of flora in the intestine,and its me ̄tabolites can inhibit pathogenic bacteria.Metabolites are rich in lactic acid,lactobacilli and other components,which can reduce the pH value of animal intestine and quickly inhibit the reproduc ̄tion of harmful bacteria.In this paper,an isolated Lactobacillus acidophilus was studied.It was found that it has strong acid production ability,the lowest pH in MRS medium can reach 3.60,and the metabolite has good heat stability.After treatment in water bath at 100℃for 10 minutes,the effect of inhibiting pathogenic bacteria has not changed significantly.
作者 汤立 李雪平 Tang Li;Li Xueping(Beijing Heswof Biotechnology Co.,Ltd.Beijing 101399,China)
出处 《中国饲料添加剂》 2021年第9期51-53,共3页 China Feed Additive
关键词 嗜酸乳杆菌 代谢产物 致病菌 抑菌 Lactobacillus acidophilus Metabolites Pathogenic Bacteria Bacteriostasis
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