对纤维素降解细菌的查和通过响应表面方法从Bacillus cereus A49优化纤维素生产
Jinjun Wang1,2, Fei Bao3, Huixian Wei3
1Key Laboratory of Arable Land Quality Monitoring and Evaluation, Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, 225009, Jiangsu, China. jinjunwang@yzu.edu.cn.
Scientific reports
|April 2, 2024
概括
研究人员对土壤细菌进行了有效纤维素降解的选,确定了三个强大的菌株. 优化的发酵条件显著提高了Bacillus cereus A49中的CMCase产量,验证了提高酶产量的预测模型.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 酵素工程是什么意思 酵素工程
背景情况:
- 纤维素降解微生物对于有效利用纤维素资源至关重要.
- 选天然细胞酶细菌和优化发酵条件是关键的研究领域.
研究的目的:
- 从土壤中选和识别强大的纤维素降解细菌.
- 为了优化发酵条件,增强碳甲基细胞酶 (CMCase) 的生产.
主要方法:
- 多步查包括初步培养,刚果红色检测和酶活性量化.
- 单因素实验和响应表面方法论,以优化CMC生产条件.
- 监测生长曲线,并通过并行实验验验证优化条件.
主要成果:
- 确定了三个强大的细胞酶产生菌株:Brevibacillus borstelensis A24,细菌谷物A49和Paenibacillus sp. A61. 一个人的生活.
- 确定CMCase生产的最佳条件:150rpm,37°C,双重单位介质,5mL注射剂.
- 响应表面方法预测了A49隔离物 (2.21倍介质,36.11°C,4.91毫升注射剂) 的最佳条件,产生15.63U/mL的CMCase活性.
结论:
- 这项研究成功地确定并优化了细胞酶产生细菌菌株.
- 优化的发酵条件显著提高了CMCase的产量,特别是Bacillus cereus A49.
- 经过验证的响应表面方法模型可靠地预测了酶生产的最佳条件.
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