优化培养条件和批量过程控制,以通过Bacillus物种增加细菌的生产
Ahmed M Elazzazy1, Mona O Mobarki1, Afra M Baghdadi1
1Department of Biological Sciences, College of Science, University of Jeddah, P.O. Box 80327, Jeddah 21589, Saudi Arabia.
Microorganisms
|April 27, 2024
概括
从土壤中分离出来的两个Bacillus菌株产生了针对MRSA和大肠杆菌等抗生素耐药细菌有效的细菌素. 在生物反应器中优化培养条件和pH控制显著提高了细菌素的生产.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 药物发现 药物发现 药物发现
背景情况:
- 抗生素耐药性是全球主要的健康威胁.
- 环境细菌是新型抗菌化合物的有希望的来源.
- 细菌素为传统抗生素提供了潜在的替代品.
研究的目的:
- 隔离和识别具有抗微生物活性的土壤细菌.
- 通过选择的Bacillus菌株来表征细菌素的生产.
- 为了优化改善细菌素产量的条件.
主要方法:
- 从土壤样本中分离和选细菌菌株.
- 使用16S rDNA测序识别活性分离物.
- 通过介质组成,化,温度,pH值和生物反应器培养来优化细菌素生产.
主要成果:
- 两个Bacillus菌株,B. atrophaeus和B. amyloliquefaciens,对抗耐药病原体表现出强烈的细菌素活性,包括MRSA,P. aeruginosa,S. typhimurium和耐卡巴胺的大肠杆菌.
- 确定了每个菌株的最佳生产条件 (例如,B. atrophaeus的48h,37°C,pH7;B. amyloliquefaciens的72h,37°C,pH8).
- 与非受控条件相比,在pH控制下的生物反应器培养使细菌素的产量翻了一番.
结论:
- 细菌和细菌amyloliquefaciens是对抗多药耐药细菌的强大细菌素的来源.
- 优化的发酵参数和生物反应器控制显著提高了细菌素产量.
- 这项研究突出了这些细菌菌株的潜力,并优化了开发新抗菌战略的生产.
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