早期酵母发酵过程中硫化的产生与挥发性硫化合物的生物发生有关,但不释放醇
Ruoyu Hou1,2, Rebecca E Jelley1, Katryna A van Leeuwen1
1School of Chemical Sciences, University of Auckland, 23 Symonds St, Auckland 1010, New Zealand.
FEMS yeast research
|June 6, 2023
概括
早期的酵母发酵显示了硫化 (H2S) 生产的菌株变异性,影响了挥发性硫化合物 (VSC). H2S与一些VSC相关,但不与3SH或3SHA等品种类型的醇相关.
科学领域:
- 葡萄酒学 葡萄酒学 葡萄酒学
- 发酵科学 发酵科学
- 酵母的新陈代谢 酵母的新陈代谢
背景情况:
- 酵母发酵涉及显著的代谢转变.
- 早期的硫化 (H2S) 生产与来自 (E) -hex-2-enal.enal等前体的挥发性硫化合物 (VSC) 和品种类型的硫醇 (3SH,3SHA) 有关.
研究的目的:
- 在Saccharomyces cerevisiae菌株中研究早期的H2S潜力,VSC/thiol产量和前体代谢.
- 在12小时内在合成葡萄媒介 (SGM) 中分析11种常见的实验室和商业品种的变异性.
主要方法:
- 在合成葡萄媒介 (SGM) 中培养了11种Saccharomyces cerevisiae菌株.
- 在12小时内监测H2S潜力,VSC配置文件和醇产量.
- 评估了 (E) -hex-2-enal 的代谢.
主要成果:
- 在不同菌株的早期H2S生产中观察到显著的变化.
- 早期的H2S与二甲基二硫化物,2-乙醇和二甲基硫化物相关,但不是3SH或3SHA.
- 所有菌株都会代谢 (E) - hex-2-enal;F15菌株的残留量较高. 早期的3SH,而不是3SHA,检测到外源的 (E) - hex-2-enal和H2S.
结论:
- 早期酵母H2S产量的自然变化会影响早期VSC产量.
- 在SGM中,H2S值可能不足以显著贡献SGM中的自由品种醇.
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