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关于即时大米粉消化的多层次结构见解

Jiakang Lin¹, Enpeng Li², Cheng Li³

¹Food & Nutritional Sciences Programme, School of Life Sciences, The Chinese University of Hong Kong, Shatin 999077, Hong Kong, China; School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.

|June 14, 2024

概括

即时米的微观结构和结晶性会影响粉的消化. 紧的结构和较高的V型结晶度与较慢的粉消化相关,为更健康的食品提供了洞察力.

科学领域:

食品科学食品科学食品科学
材料科学材料科学材料科学
营养科学营养科学

背景情况:

粉的消化能力是对大米消费的血糖反应的一个关键因素.
即时米加工可以改变其结构性质和随后的粉消化能力.
了解这些变化对于开发更健康的米制食品至关重要.

研究的目的:

调查即时大米的多尺度结构与其粉消化能力之间的关系.
确定影响即时大米中粉消化的速度的结构和晶体特征.
为食品工业提供洞察力,以开发具有降低粉消化能力的即时大米.

主要方法:

分析即食大米样本的多尺度结构 (微观结构,结晶性).
测量粉最大消化的比率和评估粉消化的能力.
消化前后的粉链长度分布的表征.

主要成果:

在不同的即溶米品种中观察到粉消化能力的显著变化 (高达20%).
与多孔结构相比,密集的,光滑的微观结构显示了较慢的粉消化能力.
V型晶度与最大粉消化的百分比负相关.
粉链长度分布在消化后发生了变化;快速消化的粉具有长粉和短粉蛋白链,而缓慢消化的粉则具有约130的高峰聚合度 (DP) 的链.

结论:

紧的微观结构,高V型结晶度和特定的链长分布 (DP ~130) 是降低即时粉消化的关键因素.
这些发现为食品工业提供了科学基础,可以设计具有改善营养特征的即食大米.
通过调节血糖反应,开发具有受控结构性质的即溶米可以有助于改善人类健康结果.

关键词:

连锁链长度分布的分布方式在体外粉消化过程中,粉消化快餐大米是什么意思快餐大米

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