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从不同来源的kombucha样本中分离和表征外聚糖

Verena Hassler¹, Nele Brand¹, Daniel Wefers¹

¹Institute of Chemistry, Food Chemistry, Martin Luther University Halle-Wittenberg, 06120 Halle, Germany.

International journal of biological macromolecules

|April 7, 2024

概括

康布查发酵产生levans,一种类型的外聚糖 (EPS). 这些levans的数量和结构因细菌和酵母 (SCOBY) 和使用的茶的共生培养而有所不同.

科学领域:

食品科学食品科学食品科学
微生物学微生物学
生物化学生物化学

背景情况:

康布查,一种发酵茶饮料,是使用细菌和酵母 (SCOBY) 的共生培养制成的.
在SCOBY中的某些细菌可以从砂糖中合成外聚糖 (EPS).
康布查中水溶性EPS的存在和类型在很大程度上仍然没有特征.

研究的目的:

为了研究外聚糖 (EPS) 的形成和结构特征在kombucha.
为了确定kombucha饮料中存在的特定类型的EPS.
确定SCOBY和茶的变化如何影响EPS生产.

主要方法:

康布查样品是使用各种SCOBY文化绿茶和黑茶制备的.
从kombucha样本中分离出了外聚糖 (EPS).
染色学方法,酶解水解和NMR光谱学用于EPS的表征.

主要成果:

莱万斯被确定为kombucha中占主导地位的外聚糖类 (EPS) 类型.
检测到微量葡萄糖,与levans显示不同程度的分支 (4.3-7.9%).
莱万的度在33-562毫克/升之间,其分子量相对较低.

结论:

莱万是kombucha发酵过程中产生的主要外聚糖.
莱万的结构特征和数量受到特定的SCOBY和使用的茶的影响.
这项研究提供了有关kombucha.levans结构多样性的全面数据.

关键词:

发酵发酵是一个过程.果是一种果.莱万 (Levan) 是一个古老的城市.

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