畜牧与饲料科学 ›› 2012, Vol. 33 ›› Issue (5): 3-3.doi: 10.12160/j.issn.1672-5190.2012.05.002

• 基础科学 • 上一篇    下一篇

一株抑菌芽胞杆菌的分离鉴定及产细菌素性能检测

辛国芹 徐海燕 武香玉 汪孟娟 谢全喜 谷巍   

  1. 山东宝来利来生物工程股份有限公司,山东泰安271000
  • 出版日期:2012-05-20 发布日期:2012-05-20
  • 通讯作者: 辛国芹
  • 作者简介:辛国芹(1985-),女,硕士,主要研究方向为基础微生态。 通讯作者:徐海燕(1975-),女,畜牧师,主要研究方向为基础微生态。

Isolation and Identification of a Bacillus Strain with Bacteriostatic Ability and Detection on Its Characters of Producing Bacteriocin

XIN Guo-qin ,XU Hai-yan, WU Xiang-yu, WANG Meng-juan, XIE Quan-xi, GU Wei (Shandong Baolai-leelai Bioengineering Co. Ltd., Tai'an 271000, China)   

  • Online:2012-05-20 Published:2012-05-20

摘要: 采用常规微生物学方法从新鲜鸡粪中分离得到1株抑菌效果较好的菌株BX-6。结合菌落形态特征、生理生化特性及菌株特异性序列分析等手段,确定其分类归属,并采用管碟法对所产细菌素的抑菌特性进行了检测。结果表明,菌株BX-6为枯草芽胞杆菌(Bacillus subtilis)。菌株在发酵过程中产生一定量的H2O2类抑菌物质,其所产细菌素具有较好的热稳定性、pH值耐受性,对大部分蛋白酶敏感,对鸡白痢沙门氏菌C79—13、鸡大肠杆菌01和金黄色葡萄球菌C56011有较好的抑菌效果,具有作为畜禽饲料添加剂的潜力。

Abstract: A strain BX-6 with good bacteriostatic activity was isolated from fresh chicken manure by routine microbiological method. Based on the means of colony morphological characteristics, physiological and biochemical characteristics and 16S rDNA sequence phylogeny analysis, the strain was identified and classified. And the antimicrobial characters of bacteriocin produced by BX-6 was detected by cylinder-plate method. The results showed that strain BX-6 was identified as Bacillus subtilis. Some antibacterial substance of H202 was produced in the fermentation process of BX-6. The bacteriocin had a good thermal stability,pH tolerance and it was sensitive to most proteases. And it had better antibacterial effects on Salmonella pullorum C79-13 ,chicken Escherichia coil O1 and Staphylococcus aureus C56011. So it had the potential to be used as feed additive of livestock and poultry.

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