需要或不需要:在酒中对酵母维生素的要求
Marie Sarah Evers1, Louise Ramousse1, Christophe Morge2
1UMR PAM A 02.102, Université de Bourgogne Franche-Comté, Institut Agro, Rue Claude Ladrey, BP 27877, 21078 Dijon CEDEX, France.
Food microbiology
|August 11, 2023
概括
这项研究确定了葡萄酒制作中Saccharomyces cerevisiae的必需维生素,揭示了生长的生物素 (B8),发酵的胺 (B1) 和两者中的泛酸 (B5). 为了有效的酵母营养,确定了最佳的泛酸水平.
科学领域:
- 葡萄酒学 葡萄酒学 葡萄酒学
- 微生物学 微生物学
- 生物化学 生物化学
背景情况:
- 维生素对酵母代谢至关重要,但它们在葡萄酒制造中的特定作用Saccharomyces cerevisiae尚未完全理解.
- 了解维生素需求是优化发酵性能和葡萄酒质量的关键.
研究的目的:
- 研究S. cerevisiae在酒精发酵过程中对水溶性维生素及其维生素的演变和消耗.
- 确定必需的维生素,并描述它们对酵母生长和造葡萄酒中的发酵的具体要求.
主要方法:
- 在发酵过程中对合成果汁中8种水溶性维生素及其维生素的监测.
- 评估特定维生素 (B1,B5,B8) 对酵母生长和发酵的影响.
- 在选定的S. cerevisiae菌株中量化了对托酸 (B5) 的需求.
主要成果:
- 五种商业S. cerevisiae菌株的各种维生素形式的消费已被证明,表明优先的营养来源.
- 确定了胺 (B1) 作为发酵必需的物质,生物素 (B8) 作为生长的物质,以及泛酸 (B5) 作为这两种过程的物质.
- 量化了泛酸 (B5) 的需求,表明750μg/L足以满足酵母的需求.
结论:
- 提供了关于S. cerevisiae对酒的维生素需求的第一个全面洞察.
- 突出了B1,B5和B8在发酵期间酵母代谢中的关键作用.
- 建立了补充B5的定量基础,以确保葡萄酒生产中最佳的酵母性能.
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