在体外动态发酵过程中,豆耐性粉的多层结构和微生物群代谢的演变
Mengliu Zhao1, Cheng Lu2, Xinzhong Hu1
1College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China.
Food chemistry
|August 24, 2024
概括
自封闭的耐果粉 (ALRS) 在发酵过程中经历结构变化,促进更大的短链脂肪酸 (SCFA) 生产,并改变肠道微生物群组成,与未经处理的耐果粉 (ULRS) 相比.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 营养科学 营养科学
背景情况:
- 耐药粉 (RS) 是一种具有潜在益生菌作用的食纤维.
- 自闭塞可以改变RS的结构和消化能力.
- 了解RS发酵对于肠道健康和营养至关重要.
研究的目的:
- 为了研究在体外结肠发酵过程中对自镜粉 (ALRS) 和未经处理的粉 (ULRS) 的结构变化.
- 评估这些RS类型对肠道微生物群组成的影响.
- 为了确定RS结构对短链脂肪酸 (SCFA) 生产的影响.
主要方法:
- 在实验室内对ALRS和ULRS进行结肠发酵.
- 分析RS结构变化 (分子量,双螺旋/顺序).
- 微生物群组成分析 (例如,Bifidobacterium丰富度).
- 对SCFA的测量. 在SCFA的测量.
主要成果:
- 在发酵过程中,ALRS和ULRS都显示分子量下降和秩序增加.
- 在晚期发酵阶段,ALRS导致Bifidobacterium丰富度更高.
- 由于其结构顺序和发酵速度,ALRS产生的SCFAs明显高于ULRS.
- 表面形态影响了基质的可访问性和微生物发酵.
结论:
- 耐粉的结构特征显著影响其由肠道微生物群发酵.
- 与ULRS相比,ALRS表现出增强的SCFA生产和明显的微生物调制.
- RS结构是其益生菌潜力和对肠道健康的影响的关键决定因素.
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