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在液体发酵中,Laceyella sacchari FBKL4.010 的机制通过比较的转录基因技术产生了四甲基

Xiaodan Wang^1,2, Wu Huang^1,2, Jin Huang³

¹School of Liquor and Food Engineering, Guizhou University, Guiyang, China.

Frontiers in microbiology

|June 28, 2024

概括

拉塞耶拉糖在液体发酵过程中通过增强的氨基酸生物合成产生四甲基酸 (TTMP),这是Moutai液体中的关键风味化合物. 这项研究揭示了参与TTMP生产的代谢途径.

科学领域:

微生物学微生物学
生物化学生化学
发酵技术的发酵技术

背景情况:

四甲基酸 (TTMP) 是Moutai风味酒中的一个关键的风味化合物.
拉塞耶拉萨卡里 (L. sacchari) 是Moutai风味的Daqu.中的主导微生物.
了解L. sacchari中的TTMP生物合成对于液体生产至关重要.

研究的目的:

为了阐明L. sacchari在液体发酵过程中产生TTMP的机制.
研究促进TTMP合成的代谢途径.
为了优化TTMP的生产在Moutai风味的Daqu.

主要方法:

液体发酵的L. sacchari. 的液体发酵.
使用气色谱-质谱分析挥发性成分的分析.
对比转录基因分析以确定差异表达基因 (DEGs).

主要成果:

液体发酵增加了L. sacchari生物质和TTMP产量,在96小时后达到14.24 mg/L.
转录组分析显示,氨基酸生物合成途径 (异氨酸,氨酸,白氨酸) 的上调和降低降解途径的调节.
鉴定出素,素和单素的生物合成途径是用于TTMP合成的氨的主要来源.

结论:

在液体发酵过程中,L. sacchari在很大程度上产生TTMP.
TTMP的生物合成与氨酸,氨酸和单氨酸代谢途径密切相关.
这项研究提供了对TTMP的微生物生产的见解,用于Moutai液体的风味增强.

关键词:

拉塞耶拉·萨卡里 FBKL4.01010 穆塔伊风味的酒精液.进行比较的文字转录.液体发酵液体发酵是什么四甲基pyrazine四甲基pyrazine四甲基pyrazine四甲基pyrazine四甲基pyrazine四甲基pyrazine四甲基pyrazine四甲基pyrazine四甲基pyrazine四甲基pyrazine

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