大陆范围内对甜菜扩散汁微生物群的洞察力
Malick Bill1,2, John D Eide1, Karen K Fugate1
1USDA-ARS, Edward T. Schafer Agricultural Research Center, Sugarbeet Research Unit, Fargo, North Dakota, USA.
Microbiology spectrum
|September 23, 2024
概括
原始甜菜汁中存在的细菌污染,主要是Firmicutes,影响了糖加工. 莱可诺斯托克细菌与拉芬水平相关,迅速消耗糖并突出潜在的损失.
科学领域:
- 微生物学 微生物学
- 食品科学 食品科学 食品科学
- 生物技术是生物技术.
背景情况:
- 来自甜菜的原始扩散汁容易受到细菌污染,使得提取糖变得复杂.
- 果汁中的微生物活动会导致加工过程中大量的糖损失.
研究的目的:
- 来自北美糖厂的原始扩散果汁中的细菌群体的概况.
- 研究细菌丰富度,碳水化合物度和加工活动之间的关系.
- 了解特定细菌,如Leuconostoc在糖降解中的作用.
主要方法:
- 全长16S rRNA amplicon测序用于细菌群落概况.
- 在果汁样本中量化碳水化合物度.
- 在实验室中对Leuconostoc mesenteroides的生长分析.
主要成果:
- 坚果虫是占主导地位的类 (85.5%),乳酸细菌 (Leuconostoc, Lactobacillus) 作为核心属.
- 在2021年和2022年的加工活动之间观察到差异丰富的细菌属的显著减少.
- 拉芬的度与Leuconostoc的丰富度呈正相关性,该植物在体外快速消耗了糖和拉芬.
结论:
- 原始扩散果汁中的细菌群落主要由Firmicutes,特别是乳酸细菌主导.
- 莱可诺斯托克在碳水化合物消耗中起着关键作用,可能导致糖损失.
- 调查结果为制定减轻糖加工中的微生物污染策略提供了基线数据.
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