在传统糊的发酵过程中揭示了g-glutamyl二,微生物组成和kokumi属性的动态
Wenhao Zhang1, Longteng Zhang1, Yanfu He1
1Key Laboratory of Seafood Processing of Haikou, Hainan International Joint Research Center for Innovative Utilization of Tropical Seafood Resources, School of Food Science and Engineering, Hainan University, 570228 Haikou, China.
Journal of agricultural and food chemistry
|February 2, 2026
概括
用20%的NaCl发酵的糊含有最高度的增味型γ-胺二和kokumi属性. 微生物分析显示,特定的细菌属与不同度的二化物形成有关.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 感官科学 感官科学
背景情况:
- 传统的糊生产涉及各种盐度的发酵.
- γ-glutamyl dipeptides是促进kokumi的关键化合物,这是一个令人愉快的味觉.
- 了解盐对微生物群落和二形成的影响对于质量控制至关重要.
研究的目的:
- 为了研究不同化 (NaCl) 度 (20%,25%,30%) 对糊中的g-glutamyl dipeptide 配置文件的影响.
- 分析微生物群落组成,感官特征和g-glutamyl二度之间的关系.
- 为了识别与发酵过程中产生的g-glutamyl dipeptide相关的关键微生物.
主要方法:
- 糊是用20%,25%和30%的NaCl (w/w) 制备和发酵的.
- 分析了微生物社区的组成.
- 通过分析技术量化了感官特征,自由氨基酸和g-glutamyl dipeptides.
主要成果:
- 检测到19种g-glutamyl二 (不包括g-EC),其度在发酵过程中增加.
- 20%的NaCl组 (S20) 在28日显示了最高的kokumi分数和总g-glutamyl二度 (22.1±0.6μmol/g).
- 特定的微生物系 (Salimicrobium,Alkalibacillus) 与S20中较高的二形成有关,而其他 (Rhodobacteraceae,Shewanella,Vibrio,Altererythrobacter) 与S25和S30有关.
结论:
- 将NaCl度优化到20%可以增强g-glutamyl dipeptides的形成,并改善糊的kokumi味道.
- 具体的微生物群落在g-glutamyl二合成中起着不同的作用,这取决于盐分水平.
- 这些发现为开发通过受控发酵改进糊口感特征的策略提供了基础.
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