罗多托鲁拉 (Rhodotorula mucilaginosa A8) 是维生素C微生物发酵过程中的潜在辅助菌株
Qian Zhang1, Lin Liao2, Shuxia Lyu1
1College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning, China.
Journal of basic microbiology
|May 16, 2024
概括
一种新型的辅助菌株Rhodotorula mucilaginosa通过增强抗氧化酶和基因表达来减少维生素C发酵中的氧化应激. 这促进了2-keto-l-gulonic酸的产生,这是维生素C的关键前体.
科学领域:
- 微生物生物技术 微生物生物技术
- 生物化学工程是生物化学工程.
- 合成生物学 合成生物学
背景情况:
- 氧化应激阻碍了Ketogululonicigenium vulgare的生长和2-keto-l-gulonic acid (2-KLG) 的产生,这是一个重要的维生素C前体.
- 辅助菌株,通常是Bacillus物种,通过释放生物分子来减轻氧化压力并提高K. vulgare的性能来减轻这种情况.
- 了解辅助菌株和K. vulgare之间的精确相互作用机制对于优化维生素C发酵至关重要.
研究的目的:
- 研究一种新型辅助菌株Rhodotorula mucilaginosa A8减轻K. vulgare.中氧化应激的机制.
- 为了确定R. mucilaginosa A8是否可以在共同培养系统中增强2-KLG的产量.
- 探索R. mucilaginosa产生的胡卜素在促进2-KLG生物合成中的作用.
主要方法:
- 使用K. vulgare和R. mucilaginosaA8.的共同培养发酵系统.
- 在K. vulgare. 中测量抗氧化酶活性.
- 定量聚合酶链反应 (qPCR) 分析,以评估与氧化应激反应相关的基因表达水平.
- 胡卜素产量的量化.胡卜素产量的量化.
主要成果:
- 在K. vulgare. 中,R. mucilaginosa A8显著降低了氧化应激.
- 同种植导致K. vulgare.中抗氧化酶活动和基因表达的升级.
- 增强了K. vulgare的2-KLG产生,而R. mucilaginosa的胡卜素起到了促进作用.
- 同时培养R. mucilaginosa与K. vulgare增加了胡卜素的产量.
结论:
- R. mucilaginosa A8有效地降低了氧化应激,并增强了K. vulgare中的2-KLG产量,证明了其作为辅助菌株的潜力.
- 这项研究为识别新的辅助菌株和构建用于维生素C生产的合成微生物群落提供了理论基础.
- 这项研究通过阐明有益的微生物相互作用,推动了维生素C微生物发酵领域的发展.
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