分析Bacillus cereus GX7的表面活性剂生产情况,并优化发酵条件
Xiaoyan Wang1, Jin Gao2, Yu Gao3
1College of Safety and Environment Engineering, Shandong University of Science and Technology, Qingdao 266510, China.
Colloids and surfaces. B, Biointerfaces
|November 11, 2023
概括
这项研究优化了Bacillus Cereus (GX7) 发酵以提高生物表面活性剂的生产. 在优化的条件下,表面张力和乳化能力得到改善的表面素产生了表面素,证明了其对工业应用的潜力.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 生物表面活性剂比化学表面活性剂具有优势,但面临着低产量和高成本等挑战.
- 从油污中分离出来的Bacillus Cereus (GX7) 是一个有前途的高产生物表面活性剂生产者.
- 作为主要产品,确定了一种脂生物表面活性剂Surfactin.
研究的目的:
- 为了优化发酵条件,通过Bacillus Cereus (GX7) 增强生物表面活性剂的生产.
- 为了描述优化菌株产生的生物表面活性剂.
- 为了评估产生的生物表面活性剂的稳定性.
主要方法:
- 从油污泥中分离和识别菌 (GX7).油污泥中的菌 (GX7).
- 使用TLC,FT-IR和LC-MS/MS提取,净化和表征生物表面活性剂.
- 优化发酵介质 (碳/来源) 和条件 (温度,pH,注射剂,速度,时间) 通过单因素实验.
主要成果:
- 最优的介质包括葡萄糖和.
- 最佳发酵条件被确定为30°C,1%的注射剂,pH7.5,每分钟150转,48小时.
- 优化发酵实现了26.84mN/m的表面张力和57.84%的乳化指数.
结论:
- 优化发酵显著改善了生物表面活性剂的产量和性能.
- 产生的表面素在广泛的温度,pH值和盐度范围内表现出极好的稳定性.
- 这项研究提出了一种可行的战略,用于具有成本效益,高产量的生物表面活性剂生产.
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