机械化和传统工艺对微生物多样性和在Xifeng Baijiu发酵过程中的挥发性风味化合物形成的影响
Chengyong Jin1,2, Guangyuan Jin1, Juan Jin2
1The Lab of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
Foods (Basel, Switzerland)
|November 27, 2024
概括
与机械化方法相比,传统的Baijiu生产产生了更高的微生物多样性和独特的风味特征. 这项研究突出了关键的微生物和化学差异,为流程优化提供了见解.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 发酵技术的发酵技术
背景情况:
- 越来越多地采用了Xifeng Baijiu生产的机械化工艺,但它们对产品特性的影响和与传统方法的差异尚不清楚.
- 了解这些差异对于保持Baijiu质量和优化生产至关重要.
研究的目的:
- 为了比较传统和机械化Xifeng Baijiu生产之间的物理化学特性,微生物群落和挥发性风味化合物.
- 在这两种过程中,研究微生物和风味化合物之间的相关性.
主要方法:
- 高通量测序用于微生物社区分析 (细菌和真菌).
- 气色谱-质谱 (GC-MS) 用于挥发性风味化合物的识别.
- 皮尔森相关性分析,以确定微生物和风味化合物之间的关系.
主要成果:
- 传统的Baijiu生产显示出比机械化生产更高的细菌和真菌丰富性和多样性.
- 观察到明显的细菌继承模式,在两种方法中的早期阶段,Firmicutes和Actinobacteria占主导地位.
- 确定了71种挥发性化合物,其中和醇占主导地位. 在特定的化合物中,如乙基酸盐和1-nonyl酒精中,发现了关键差异.
- 细菌与香味化合物的相关性比真菌更强,而*Lactobacillus*与其他主导品种的负相关性较强.
结论:
- 与传统方法相比,机械化Xifeng Baijiu生产改变了微生物群落和挥发性配置.
- 微生物的组成,特别是像*Lactobacillus*这样的细菌属,显著影响了风味的发展.
- 这些发现为进一步研究和改进机械化Baijiu生产过程提供了基础.
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