接种青克豆的物理化学特性,挥发性化合物和微生物多样性的表征
Chengxu Cao1, Yanwen Kong1, Siyu Ha1
1College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, PR China.
Food research international (Ottawa, Ont.)
|August 12, 2025
概括
这项研究探讨了清凯豆 (QBP) 发酵过程,揭示了微生物的转变和风味化合物的发展. 像Bacillus和Issatchenkia这样的关键细菌对这种西藏谷物产品的独特味道和香气作出了重大贡献.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 生物化学 生化学
背景情况:
- 青开是西藏高原的一种谷物,富含营养,增强了大豆糊.
- 了解微生物和物理化学对清开豆 (QBP) 味道和营养的贡献至关重要.
研究的目的:
- 在QBP发酵过程中调查物理化学性质,挥发性化合物和微生物动态.
- 确定影响味道和营养变化的关键微生物和因素.
主要方法:
- 青克豆的发酵过程.
- 物理化学性质的分析 (可定位酸,氨基酸,酶活性).
- 气色谱-质谱 (GC-MS) 对于挥发性化合物.
- 16S rRNA基因测序用于微生物社区分析.
- 冗余分析和斯皮尔曼的相关性用于数据解释.
主要成果:
- 在发酵过程中,可定位酸,氨基酸和酶活性显著增加.
- 确定了主要的属:巴西卢斯,佩迪奥科库斯,伊萨切肯基亚和阿斯伯吉卢斯.
- 皮迪奥科克和伊萨奇肯基亚的丰富性增加,而细菌和阿斯伯吉勒斯的丰富性减少.
- 盐度和水分是微生物社区转移的关键驱动因素.
- 细菌和Issatchenkia与挥发性风味化合物显示出强烈的正相关性.
结论:
- 在QBP发酵过程中,微生物群落结构和物理化学特性发生显著变化.
- 细菌和Issatchenkia在QBP中风味代谢物的发展中发挥着关键作用.
- 结果为优化QBP加工和开发新型发酵产品提供了洞察力.
相关概念视频
01:29Microbes in Food Production
Microbial fermentation is central to food biotechnology, enhancing flavor, texture, preservation, and stability. Fermentative microorganisms metabolize carbohydrates into organic acids, alcohols, and other metabolites that inhibit spoilage organisms and improve digestibility while contributing distinctive sensory qualities.In baking, amylases naturally present in flour hydrolyze starch into monosaccharides such as glucose, which Saccharomyces cerevisiae ferments anaerobically. Through...
01:27Microbes in the Production of Fermented Foods
Lactic acid bacteria (LAB) and molds are instrumental in fermenting plant-based foods to enhance preservation and ensure year-round availability. These microbial processes convert plant carbohydrates into organic acids and other metabolites that inhibit spoilage organisms and contribute to the sensory qualities of the final product.In sauerkraut production, cabbage goes through a microbial succession that starts with cocci such as Leuconostoc mesenteroides. These microbes begin fermentation by...