Antibacterial Activities of Bacillus amyloliquefaciens DQB-1 Isolated From the Cecum of Dezhou Donkeys
文献类型: 外文期刊
作者: Chen Nannan;Liu Yu;Qin Pingwei;Li Yang;Ma Diyang;Li Juan;Shi Tongrui;Zhu Zhanbo
作者机构:
关键词: Antibacterial activity; B. amyloliquefaciens; Biological Control; Donkey; Microecological agents
期刊名称: Journal of Equine Veterinary Science
ISSN: 0737-0806
年卷期: 2021 年 102 卷
页码:
收录情况: JCR(2021版)
摘要: The microorganisms in the cecum of donkeys share similar functions as those in the rumen of cattle. Transformation of the cecal microenvironment by probiotics plays an important role in the health and growth of donkeys. In order to screen out excellent donkey probiotic preparations, in this study, we isolated an antibacterial strain of Bacillus amyloliquefaciens (designated as DQB-1) from the cecum of Dezhou donkey. The strain was assessed in terms of antibacterial activity, antibacterial substance analysis, and stability. The results show that, the Bacillus amyloliquefaciens DQB-1 exhibited protease production activity and can significantly inhibit the growth of bacterial and fungal pathogens. The strongest antibacterial substance would be obtained after 24 hours of growth. The most suitable storage temperature for antibacterial extracts is -20 °C. The antibacterial substance produced by Bacillus amyloliquefaciens DQB-1 isolated from donkeys has strong antibacterial activity, protease-producing activity and good stability. Therefore, it can be developed as a probiotic preparation for preventing infectious diseases in donkey farms. © 2021
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