通过代谢工程和发酵工程,利用Yarrowia lipolytica进行具有成本效益的烯生产
Wen-Bo Lin1, Hong Chen1, Ze-Qi Song1
1College of Bioscience and Biotechnology, Hunan Agricultural University, No. 1 Nongda Road, Changsha, 410128, People's Republic of China.
Biotechnology letters
|May 5, 2025
概括
使用Yarrowia lipolytica的微生物烯生产提供了一个可持续的替代方案. 这项研究通过基因工程和发酵优化了烯产量,证明了低成本基质的工业应用潜力.
科学领域:
- 生物技术是生物技术.
- 代谢工程是代谢工程.
- 工业微生物学 工业微生物学
背景情况:
- 斯卡烯是一种重要的三烯,由于复杂的提取和环境问题,它面临着生产挑战.
- 微生物合成为烯生产提供了一个可持续和高效的替代方案.
- 乙-CoA是烯生物合成途径中的关键前体.
研究的目的:
- 通过增加乙-CoA供应,增强Yarrowia lipolytica中的烯生产.
- 为了优化发酵条件以最大限度地提高烯产量.
- 评估使用低成本基质的可行性,如甘糖蜜和废食用油用于工业烯合成.
主要方法:
- 通过共同过度表达YlACL2和YlHMG1来提高乙-CoA水平,对Yarrowia lipolytica进行基因工程.
- 发酵工程优化参数,如温度,介质体积,C/N比率,瓶类型和介质类型.
- 使用酸化甘糖蜜 (AHM) 和废油 (WCO) 作为具有成本效益的碳来源.
主要成果:
- 工程菌株YLACLH2实现了232.29 mg/L的烯产量.
- 通过发酵工程进行进一步的优化,使烯的产量增加到514.33 mg/L.
- 在优化条件下使用AHM和WCO证明了高效的烯合成.
结论:
- 雅罗维亚 (Yarrowia lipolytica) 是一个有前途的宿主,用于工业化生产素.
- 优化的代谢工程和发酵策略显著提高了烯产量.
- 使用低成本,可持续的基板,如AHM和WCO支持环保的烯制造.
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