部分凝化的玉米和土豆粉在逆向降解后显示更快的消化能力
1Food & Nutritional Sciences Programme, School of Life Sciences, The Chinese University of Hong Kong, Shatin 999077, Hong Kong, China.
Food chemistry
|July 17, 2025
概括
反降解可以增加粉的消化能力,这与人们普遍认为的相反. 部分凝化之后的逆向降级会影响粉的消化速度,特别是在玉米粉中.
科学领域:
- 食品科学与技术 食品科学与技术
- 碳水化合物化学 碳水化合物化学
- 营养科学 营养科学
背景情况:
- 粉的消化能力对于食品加工和营养至关重要.
- 粉凝化和逆向降解之间的相互作用影响了消化能力.
- 部分凝化和随后的逆向化对粉消化的影响尚不清楚.
研究的目的:
- 调查不同程度的凝化和随后的退化对粉消化能力的影响.
- 为了阐明在部分凝化和逆向化过程中粉的结构变化.
- 为了确定这些过程后耐消化的特定粉成分.
主要方法:
- 玉米和土豆粉在不同的时间点进行了部分凝化.
- 凝化粉经历了逆向降解过程.
- 评估了粉的消化能力,并分析了结构变化 (短程排序,颗粒形态).
主要成果:
- 部分凝化粉,与完全凝化粉不同,在逆向降解后表现出更快的消化速度.
- 玉米粉在20秒前凝化后120分钟后,消化比率增加了17.7%.
- 部分凝化和逆向化导致玉米和土豆粉的短距离排序减少,特定的链条长度 (玉米中的粉素,土豆中的粉素) 显示出对消化的抗性.
结论:
- 逆向降解并不普遍降低粉的消化能力;它取决于最初的凝化程度.
- 部分凝化可以使粉在逆向降解后增强消化能力.
- 了解这些过程是定制粉在食品应用中的关键.
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