细菌谷物用于合成工业玉米粉残留物中的多基酸
Xiaomei Xu1, Zepeng Li1, Qianqian Ma1
1School of Biological Science and Technology, University of Jinan, Jinan 250022, People's Republic of China.
International journal of biological macromolecules
|December 15, 2024
概括
玉米粉残留物 (CSR) 可用于通过Bacillus cereus生产多酸酸盐 (PHAs). 这项研究实现了61.61%的PHA含量,为CSR利用提供了一种新的生物发酵方法.
科学领域:
- 生物技术是生物技术.
- 微生物学 微生物学
- 聚合物科学 聚合物科学
背景情况:
- 玉米粉残留物 (CSR) 是粉水解的副产品,通常使用不足.
- 聚酸酸 (PHAs) 是可生物降解的聚合物,有可能取代石化塑料.
- 为微生物PHA生产开发可持续的碳来源至关重要.
研究的目的:
- 调查使用CSR作为微生物PHA生产碳来源的可行性.
- 从CSR中分离和描述能够合成PHA的Bacillus cereus菌株.
- 为了优化发酵条件,最大限度地提高B. cereus.中的PHA积累.
主要方法:
- 通过使用CSR来分离Bacillus cereus菌株 (MG1,MQ1).
- 对菌株进行基因改造,以增强PHA合成途径.
- 优化PHA生产的发酵参数.
- 用细胞干重量 (CDW) 的百分比来量化PHA含量.
主要成果:
- 通过使用CSR作为唯一的碳来源,成功分离了两种B. cereus菌株MG1和MQ1.
- 工程菌株MG2的最大PHA含量达到CDW的61.61%.
- 这是迄今为止B. cereus中报告的最高PHA含量.
- 在B. cereus.中从CSR中成功合成PHA.
结论:
- 玉米粉残留物 (CSR) 是微生物多酸 (PHA) 生产的可行和可持续的碳来源.
- 细菌大麦可以被设计为从CSR有效的PHA积累.
- 这项研究提出了一种新的,合理的企业社会责任利用策略,为循环生物经济做出贡献.
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