综合共同培养和随后的化:利用Saccharomyces cerevisiae和Clostridium tyrobutyricum进行简化的生产
Katharina Oehlenschläger1, Michaela Lorenz1, Emily Schepp2
1Institute of Bioprocess Engineering, University of Kaiserslautern-Landau, Gottlieb-Daimler-Straße 49, 67663, Kaiserslautern, Germany.
这项研究开发了一种可持续的方法,使用Clostridium tyrobutyricum和Saccharomyces cerevisiae的共同培养来生产生物基乙酸盐. 发酵产品的酶性化产生了高度的乙酸盐,提供了绿色替代品.
科学领域:
- 生物技术和生物工程
- 工业微生物学
- 绿色化学
背景情况:
- 越来越多的天然调味剂需求,
- 传统的化学合成带来了环境问题,需要生物替代品.
- 酵素化为从生物衍生前体生产乙酸盐提供了一个有前途的途径.
研究的目的:
- 使用Clostridium tyrobutyricum和Saccharomyces cerevisiae生产黄油酸和乙醇的可持续联合种植策略.
- 优化发酵条件以最大限度地提高前体产量.
- 为了实现生物衍生前体的高效酶化,以乙酸.
主要方法:
- 在受控的无氧条件下 (37°C,pH 6,每分钟150转) 培养Clostridium tyrobutyricum和Saccharomyces cerevisiae.
- 由于Saccharomyces cerevisiae的酸耐受性有限,实施了延迟接种策略.
- 在两相系统中通过脂酶催化酶化以产生乙酸盐.
主要成果:
- 批量共同培养的最终度为13.98 ± 3.06 g/L黄油酸和21.43 ± 1.66 g/L乙醇.
- 养批量培养增强黄油酸至45.62 ± 3.82 g/L,乙醇至18.61 ± 4.11 g/L.
- 酶化化达到23.93±0.68g/L的最大度,产量为25%.
结论:
- 在C. tyrobutyricum和S. cerevisiae的成功共同培养下,可提供可持续的黄油酸和乙醇来源.
- 酶性化有效地将生物衍生前体转化为乙酸盐.
- 这项研究证明了生物基乙酸盐生产的可行和可持续方法.
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