实验室模拟的结肠pH梯度对微生物活动和使用常见的益生菌作为基质的代谢产生的作用
Zhuqing Xie1, Weiwei He2,3, Alex Gobbi4,5
1Department of Food Science, University of Copenhagen, Frederiksberg, Denmark. zhuqing@food.ku.dk.
BMC microbiology
|March 12, 2024
概括
结肠pH梯度显著影响肠道微生物群 (GM) 组成和短链脂肪酸 (SCFA) 生产. 了解这些pH值变化对于肠道健康研究至关重要.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 营养科学 营养科学
背景情况:
- 肠道微生物群 (GM) 将饮食成分代谢成短链脂肪酸 (SCFA).
- 结肠的pH值和碳水化合物来源影响了转基因活动和SCFA生产.
- 关于结肠pH梯度如何影响转基因生物和代谢物生产的知识有限.
研究的目的:
- 调查结肠pH梯度对转基因成分和SCFA生产的影响.
- 分析不同pH值和食基质 (胰岛素,乳糖,GOS,FOS) 对体外模拟转基因生物的影响.
- 了解pH,转基因结构和SCFA概况之间的关系.
主要方法:
- 使用了体外结肠模型与便注射剂.
- 模拟了三种不同的结肠pH梯度 (低,中,高).
- 分析了对各种碳水化合物基质的反应中的转基因成分和SCFA生产.
主要成果:
- 结肠pH梯度显著改变了转基因结构,捐赠体和基质效应更加明显.
- 低pH值降低了细菌菌种的细菌菌种. 并且增加了Bifidobacterium spp. 的发生. 这是一个丰富的,丰富的.
- 较高的pH值促进了SCFA的产生 (例如,酸与胰岛素,酸与GOS/FOS),丰富了特定的细菌,如Butyricimonas,Phascolarctobacterium,Bacteroides和Rikenellaceae.
结论:
- 食纤维影响转基因成分和SCFA产生,这反过来影响结肠pH和转基因活性.
- 该研究详细介绍了沿着结肠升的pH梯度对食基质发酵的影响.
- 考虑pH值对于全面的肠道微生物群研究至关重要.
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