在体外发酵过程中,大米粉-酸综合体 (V型) 的结构变化及其对肠道微生物群及其潜在代谢途径的影响
Weidong Zhang1, Jia Kong1, Xiaoxiao Wei1
1State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
Food chemistry
|March 28, 2024
概括
米粉-氨酸复合物增强肠道微生物群的多样性和有益细菌,促进肠道平衡. 它们的发酵速度较慢,有助于将短链脂肪酸输送到结肠.
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:
- 米粉 (RS) 和其与氨酸 (RS-A) 的复合物具有不同的结构和功能性质.
- 了解它们的体外发酵对于评估肠道健康影响至关重要.
研究的目的:
- 为了比较RS和RS-A复合物的体外发酵特性.
- 研究RS-A复合体对肠道微生物群组成和功能的影响.
主要方法:
- RS和RS-A复合体的结构特征.
- 试管发酵试验用于分析发酵特性和微生物变化.
- 对肠道微生物群多样性和代谢途径的分析.
主要成果:
- 发酵后的RS-A复合体呈现出V型晶体结构,有增强的顺序度 (DO) 和双螺旋度 (DD).
- RS-A复合物增加了细菌群和鲁米诺可可科科的相对丰富性,促进了肠道微生物群的多样性.
- 与能量,消化和碳水化合物降解相关的代谢途径的过度表达在RS-A复合物中被观察到.
- 较慢的RS-A复合物的发酵速度促进了短链脂肪酸 (SCFA) 运输到远端结肠.
结论:
- RS-A复合物具有独特的发酵特性,可以积极调节肠道微生物群.
- 粉基质的结晶性会影响微生物的利用和SCFA的产生.
- RS-A复合体显示出通过有针对性的SCFA传递来促进肠道健康和稳态的潜力.
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