相关实验视频

Updated: Jul 16, 2025

Author Spotlight: Exploring Tea Aroma Using Solvent-Assisted Flavor Evaporation Technique

Author Spotlight: Exploring Tea Aroma Using Solvent-Assisted Flavor Evaporation Technique

Published on: May 26, 2023

关于不同光味的物理化学性质,微生物组成和挥发性成分的比较研究Daqu

Panpan Hu¹, Ji Wang², Urooj Ali³

¹Department of Life Science Lyuliang University Lyuliang Shanxi China.

Food science & nutrition

|September 13, 2023

概括

这项研究分析了淡香味的达库,这是中国白生产的关键组成部分. 微生物群落和物理化学性质的差异影响挥发性化合物配置,影响baijiu的质量.

科学领域:

微生物学微生物学
食品化学食品化学
发酵科学发酵科学

背景情况:

达库对于中国白生产至关重要,通过其微生物菌群和前体,为独特的风味做出贡献.
了解轻口味达库的特点对于指导baijiu制造至关重要.
西省的达奎样本被调查,以揭示微生物和化学差异.

研究的目的:

分析四个轻口味的Daqu样本的微生物结构,物理化学特性和挥发性风味.
为了确定Daqu样本中的关键差异和相似之处.
为了提供混合达库以提高酒质量的理论基础.

主要方法:

使用高通量测序来确定微生物社区结构.
测量了物理化学性质 (酸度,酶活性).
头部空间固相微提取/气色谱-质谱分析了挥发性风味.

主要成果:

没有观察到含水量或雌激酶活性的显著变化.
DQ2表现出较高的酸度和糖化活性;DQ3显示出最高的蛋白酶活性.
微生物群落是相似的 (由Lactobacillus,Streptophyta,Issachenkia主导),但丰富度不同. 真菌发病率有所不同,在DQ1/DQ2中Rhizopus/Lichtemia较高,在DQ4中Torulaspora/Aspergillus/Candida较高.
DQ2含有最易挥发的成分,其中乙烯酸乳酸和乙烯酸乙烯酸是突出的.

结论:

在物理化学指标和微生物丰富度上存在明显的差异.
微生物群落的变化直接影响挥发性化合物的特征.
这些发现对于优化Daqu混合策略以改善baijiu质量具有重要意义.

关键词:

达奎达奎是什么意思达奎达奎轻松的风味,轻松的味道.微生物社区结构的微生物社区结构.物理化学特性物理化学特性挥发性的组件是挥发性的组件.

更多相关视频

PTR-ToF-MS Coupled with an Automated Sampling System and Tailored Data Analysis for Food Studies: Bioprocess Monitoring, Screening and Nose-space Analysis

PTR-ToF-MS Coupled with an Automated Sampling System and Tailored Data Analysis for Food Studies: Bioprocess Monitoring, Screening and Nose-space Analysis

Published on: May 11, 2017

Preparation of High-Quality Fermented Fish Product

Preparation of High-Quality Fermented Fish Product

Published on: August 23, 2019

相关概念视频

Flame Photometry: Lab

Flame Photometry: Lab

In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...

Distillation: Vapor–Liquid Equilibria

Distillation: Vapor–Liquid Equilibria

Distillation is a separation technique that takes advantage of the boiling point properties of disparate elements in a mixture. To perform distillation, we begin by heating a miscible mixture of two liquids with a significant difference in boiling points (at least 20°C). As the solution heats up and reaches the bubble point of the more volatile component, some molecules of the more volatile component transition into the gas phase and travel upward into the condenser, which is a glass tube...