中国畜牧兽医

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食淀粉乳杆菌代谢产物抑菌与抗病毒的比较研究

赵毅博,田宗民,王莹莹,魏萍   

  1. 东北农业大学动物医学学院,黑龙江哈尔滨 150030
  • 收稿日期:2014-02-24 出版日期:2014-08-20 发布日期:2014-08-22
  • 通讯作者: 魏萍(1961—),男,博士,教授,博士生导师,研究方向:兽医传染病学与流行病学。E-mail:weiiping@163.com
  • 作者简介:赵毅博(1987—),男,黑龙江人,硕士,研究方向:益生菌抗猪胃肠道病毒。
  • 基金资助:

    黑龙江省教育厅重点项目(12521z001)。

Comparative Study on Effect of Bacteriostasis and Antivirus of Lactobacillus amylovorus Metabolites

ZHAO Yi-bo,TIAN Zong-min,WANG Ying-ying,WEI Ping   

  1. College of Veterinary Medicine,Northeast Agricultural University,Harbin 150030,China
  • Received:2014-02-24 Online:2014-08-20 Published:2014-08-22

摘要: 为研究食淀粉乳杆菌(Lactobacillus amylovorus)代谢产物抑菌和抗病毒的作用机制并确定其成分,试验采用过酸、过氧化氢酶及蛋白酶等处理食淀粉乳杆菌培养上清液,并利用琼脂扩散法(牛津杯法)和MTT法分别检测了食淀粉乳杆菌培养上清液对大肠杆菌、沙门氏菌和金黄色葡萄球菌的抑菌活力及对猪传染性胃肠炎病毒(TGEV)感染猪小肠上皮细胞的抗病毒活性。结果显示,经过氧化氢酶、胰蛋白酶、胃蛋白酶处理后的食淀粉乳杆菌培养上清液的抑菌效果显著降低(P<0.05),但抗病毒活性变化不显著(P>0.05);经酸、蛋白酶K处理后的食淀粉乳杆菌培养上清液的抑菌效果和抗病毒活性都显著减弱(P<0.05),表明食淀粉乳杆菌培养上清液中抑菌与抗病毒成分有一致性,且为酸性物质和对蛋白酶K敏感的蛋白类物质。

关键词: 食淀粉乳杆菌; 抗病毒; TGEV; IPEC-J2

Abstract: The aim of this research was to study the mechanisms of Lactobacillus amylovorus metabolites on bacteriostasis and antiviral activity,and identify the active ingredients of bacterial metabolites.The supernatants were treated by acids,hydrogen peroxide and protease.The agar well diffusion system was performed for detecting the bacteriostasis activity of the supernatants of Lactobacillus amylovorus against Escherichia coliSalmonella and Staphylococcus aureus.Then evaluated the anti-TGEV activity on the IPEC-J2 cells with MTT.The results showed that the bacteriostasis of the supernatants of Lactobacillus amylovorus reduced significantly by treating with hydrogen peroxide,trypsin and pepsin (P<0.05),but antiviral activity was not reduced significantly (P>0.05).However,the bacteriostasis and antiviral activity of the supernatants of Lactobacillus amylovorus reduced significantly by treating with acids and protease K (P<0.05),it was found that the bacteriostasis and antiviral activity of Lactobacillus amylovorus metabolites possess consistency and the component was acids or protease K-sensitive proteins.

Key words: Lactobacillus amylovorus; antivirus; TGEV; IPEC-J2