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固态NMR光谱学揭示了米粉中抛光诱导的超分子乱

Etsuko Katoh¹, Tasuku Yamada², Naoko Fujita³

¹Faculty of Food and Nutritional Sciences, Toyo University, 48-1 Oka, Asaka-shi, Saitama 351-8510, Japan.

|March 5, 2026

概括

抛光米 (shinpaku) 破坏了粉的结晶性,使其更适合造. 这项研究使用了固态NMR和SEM等先进技术,揭示了结构变化如何增强水和koji透.

科学领域:

农业科学农业科学
食品科学食品科学食品科学
生物化学生物化学

背景情况:

酒造的适用性与水的结构特征有关,但粉核心 (shinpaku) 的分子基础尚不清楚.
亚马达尼希基是主要的米品种,需要特殊的加工才能达到最佳造效果.

研究的目的:

为了阐明在抛光过程中 sake 米 (Yamadanishiki) 的分子和结构变化.
调查抛光对神帕库特征和造适度的影响.

主要方法:

使用固态核磁共振 (NMR) 光谱学 (C和H) 抛光到40%的萨克米的表征.
扫描电子显微镜 (SEM) 用于结构分析.
气色谱-质谱 (GC-MS) 用于脂质分析.
氨基培克链长度分析.

主要成果:

固态CNMR显示, shinpaku中的A型晶体秩序随着抛光而逐渐破坏,而氨酸骨干仍然完好无损.
固态H NMR和GC-MS表明,抛光消除了由脂质衍生的信号.
SEM揭示了松散包装的粉颗粒和shinpaku中的空隙,与密集的外部内精形成鲜明对比.

结论:

固态NMR对于分析米中粉障碍是有效的.
抛光通过增加水的透率和由于神帕库的结构修改而导致的柯吉入侵,提高了萨克米的造适用性.
使用固态NMR和SEM的综合方法提供了对大米结构和加工效应的全面见解.

关键词:

脂肪酸是一种脂肪酸.米抛光机抛光机的使用方法萨克米饭是什么萨克米饭是什么这就是新帕库 (Shinpaku).固态核磁共振光谱学固态核磁共振光谱学粉结构结构粉结构

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