自循环发酵策略,通过Kluyveromyces marxianus的小麦来有效地生产生物乙醇
G Flores-Cosío1, O Lizarraga1, A Sanchez2
1Biotecnología Industrial, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C, Camino Arenero 1227, Col. El Bajío, Zapopan Jalisco, C.P. 45019, México.
World journal of microbiology & biotechnology
|October 23, 2025
概括
自循环发酵 (SCF) 显著提高了纤维素乙醇生产效率. 与分离水解和发酵 (SHF) 相比,这种方法可提高乙醇生产率超过21%,使其成为一个有前途的战略.
科学领域:
- 生物技术是生物技术.
- 生物能源是生物能源.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 纤维素乙醇的经济可行性取决于高产量和生产率.
- 提高乙醇生产效率的策略对于工业应用至关重要.
- 自循环发酵 (SCF) 显示了提高乙醇生产率的潜力.
研究的目的:
- 评估SCF系统在提高乙醇生产率方面的有效性.
- 为了比较SCF性能与分离水解和发酵 (SHF) 和同时糖化-发酵 (SSF).
- 评估SCF在从小麦中生产基纤维素乙醇方面的潜力.
主要方法:
- 模拟SCF过程,使用混合生物反应器中六个周期的实验数据.
- 将SCF与SHF和SSF进行比较,用于从小麦中生产乙醇.
- 使用Kluyveromyces marxianus SLP1作为酵母菌株.
主要成果:
- 体积乙醇生产率 (Qp) 为SCF的1.11g/Lh,SHF的1.13g/Lh,SSF的0.42g/Lh.
- 在全球范围内,SCF的生产率 (Qg) 达到0.65g/Lh,是最高的.
- 据估计,SCF的年乙醇生产率比SHF提高了21.7%,比SSF提高了3.1倍.
结论:
- SCF是一种有效的策略,可以提高基纤维素乙醇生产的生产率.
- 与传统的SHF和SSF方法相比,SCF提供了显著的生产力提升.
- 酵母的生理状态仍然是SCF系统的一个限制因素.
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