开发一种高性能Trichoderma突变体,通过UV诱导的随机突变产生增强的细胞酶生产
Seungjun Kim1, Iksu Ha1, Yun-Yeong Lee1
1Department of Forest Products and Biotechnology, Kookmin University, Seoul 02707, Republic of Korea.
Journal of fungi (Basel, Switzerland)
|June 25, 2025
概括
紫外线 (UV) 辐射有效地增强了Trichoderma sp.中的细胞分解酶的产生. 这种具有成本效益的方法改善了酶活性,显示了生物质转换的前景.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 酶工程是什么? 酶工程是什么?
背景情况:
- 紫外线 (UV) 诱导的突变发生是一种成本效益高的方法,可以在没有化学物质的情况下进行基因变异.
- 它被广泛用于改善工业微生物中的酶活性.
- 三皮虫 sp. 在 是一个关键的真菌,用于林氏纤维素生物质转化.
研究的目的:
- 增强Trichoderma sp.中的细胞分解酶的产生. 使用紫外线突变发生.
- 优化紫外线暴露参数 (距离和持续时间) 以获得最大的酶活性.
- 为了评估产生的突变的工业适用性.
主要方法:
- 暴露Trichoderma sp. 的情况 在不同距离 (4,9,13厘米) 和持续时间 (2,4,6,8分钟) 的紫外线辐射下.
- 评估治疗后的内葡萄糖酶 (EG),β-葡萄糖酶 (BGL) 和细胞核酶 (CBH) 的活性.
- 在10L生物反应器中扩大最佳突变物 (Mut-4) 的规模.
主要成果:
- 在4厘米的距离下进行紫外线处理,可以提高EG,BGL和CBH活动的1.5倍,1.3倍和0.9倍.
- 在4厘米的距离下4分钟的最佳暴露进一步增加了1.9,1.6和1.4倍的活动.
- 在生物反应器扩大规模的过程中,Mut-4突变体表现出持续增强的活动 (1.9,2.0,1.4倍).
结论:
- 紫外线诱导的突变发生是一种有效的策略,可以增强细胞分解酶的产生.
- 优化紫外线处理和选可以显著改善酶活性.
- 像Mut-4这样的突变菌株为高效的纤维素生物质转化提供了一个有希望的途径.
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