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酸通过多种分子间相互作用改变了粉的物理化学和功能性质
Zhijie Liu1, Zhicheng Jin1, Zhangchi Peng1
1State Key Laboratory of Rice Biology and Key Lab of the Ministry of Agriculture for Nuclear Agricultural Sciences, Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou, 310029, Zhejiang, PR China.
酸 (CGA) 通过与粉糖相互作用,改变了粉的结构和功能. 它普遍抑制逆向降解并增加耐性粉,但对玉米,马和豆粉的影响粘度和热稳定性不同.
科学领域:
- 食品科学与技术 食品科学与技术
- 生物化学 生物化学
- 材料科学 材料科学 材料科学
背景情况:
- 酸 (CGA) 与粉形成复合物,影响其性能.
- 精确的相互作用机制及其在不同类型的粉中的变化尚未完全理解.
研究的目的:
- 为了研究CGA和粉糖之间的相互作用.
- 阐明CGA对玉米粉 (CS),马粉 (PoS) 和豆粉 (PeS) 的结构和物理化学特性的影响.
主要方法:
- 用分子动力学模拟来建模CGA-氨糖相互作用.
- 分析了粉-CGA复合物的结构和物理化学特性.
主要成果:
- 通过键,范德瓦尔斯力和静电相互作用,CGA与粉素结合.
- CGA破坏了粉的短距离秩序,导致网络松,并抑制了逆行.
- 粘度档案有所不同:CS-CGA和PoS-CGA显示峰值粘度下降,而PeS-CGA显示峰值粘度增加.
- 粉-CGA混合物降低了热稳定性,但减轻了体重.
- CGA显著增加了耐性粉 (RS) 含量和降低了消化能力,最显著的是豆粉.
结论:
- CGA与粉的相互作用取决于粉类型,影响结构和功能特性不同.
- 这些发现提供了通过选择适当的粉来源来优化CGA在食品加工中的应用的见解.
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