仔猪粪便中乳酸菌的分离、鉴定及其抑菌特性的研究

Isolation-identification and bacteriostasis-bacteriostasis of lactobacillus from piglet′s feces

从健康仔猪新鲜粪便中分离到3株乳酸菌,并对其进行了属和种的生化鉴定,结果显示,菌株La与Lt均为嗜酸乳杆菌(Lactobacillus acidophilus),Ls为乳酸乳杆菌(Lactobacillus lactis)。对分离的3株乳酸菌的代谢产物进行了体外抑菌试验研究,结果表明,3株乳酸菌的代谢产物对大肠杆菌、沙门氏菌和金黄色葡萄球菌都有较明显的抑制作用;对金黄色葡萄球菌的抑菌效果最好,沙门氏菌次之,对大肠杆菌的抑菌效果相对较弱。

Isolated 3 strains lactobacillus from piglet＇s fresh feces and identified its genus and strain, results are： the Is strain is lactobacillus lactis, the La and Lt strains are lactobacillus acidophilus. And carried the metabolic product of three strains in the study of inhibition activity. These experiments proved that, all the lactobacillus＇ metabolite had apparent inhibition to colibacillus, salmonella and Staphylococcus aureus, had the most bacteriostasis result to staphylococcus aureus, salmonella was next to, and the effect with colibacillus was more feeble.