纤维素衍生物的可溶性是它们在减缓粉消化中的作用的有限指标
Huijuan Zhu1, Yulong Bao2, Alkassoumi Hassane Hamadou2
1Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013, China.
International journal of biological macromolecules
|December 20, 2024
概括
纤维素衍生物的可溶性对粉消化有不同的影响. 溶解形式如甲基纤维素 (MC) 和氧化甲基纤维素 (Na-CMC) 显著降低了粉的消化,并增加了耐性粉,与不溶解形式不同.
科学领域:
- 食品科学与技术 食品科学与技术
- 生物化学 生化学
- 材料科学 是一种材料科学.
背景情况:
- 纤维素衍生物在食品工业中广泛用于添加剂和功能纤维.
- 基于溶解性的传统分类并不能完全解释它们对食物矩阵的复杂影响.
- 了解不同的纤维素形式如何影响粉消化对于开发功能性食品至关重要.
研究的目的:
- 研究不溶性 (纤维素,乙基纤维素) 和溶性 (甲基纤维素,碳素甲基纤维素) 纤维素衍生物对体外粉消化产生影响的机制.
- 为了比较溶解度对基于粉的食品中纤维素衍生物的功能性质的影响.
主要方法:
- 在纤维素衍生物的存在下对α-氨酶活性进行迈凯利斯-门顿运动分析.
- 基于粉的食品矩阵多孔性和耐性粉含量的分析.
- 在使用R1047/1022比率的粉矩阵中对短距离排序的评估.
主要成果:
- 不溶性纤维素和乙烯纤维素显示阿尔法-氨酶Vmax的非显著下降,并没有持续增加耐药粉.
- 可溶性甲基纤维素和碳氧甲基纤维素显著降低了α-氨基酶Vmax和催化效率 (kcat/Km).
- 溶性衍生品增加了粉矩阵的短距离排序和耐性粉含量 (高达6%),与不溶性形式不同.
结论:
- 溶解度是纤维素衍生物在减缓粉消化中的作用的有限指标.
- 可溶性纤维素衍生物显著抑制α-氨基酶,并增强抗性粉的形成.
- 在粉基质中由纤维素衍生物引起的结构变化是开发低血糖指数食品的关键.
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