基于低场核磁共振技术监测谷子萌发过程中内部水分变化

Change in Internal Water of Millet During Soaking and Germination Based on LF-NMR Technology

为研究谷子在萌发过程中水分分布及变化规律,本研究采用低场核磁共振技术(LF-NMR)对谷子浸泡和发芽过程进行了动态监测。结果表明,谷子浸泡过程中,内部水分以结合水为主,部分结合水逐渐转化为自由水,总水、自由水及结合水含量均快速增加后趋于稳定,确定浸泡最佳时间为10 h。谷子发芽过程中,内部水分以半结合水和结合水为主,部分结合水、自由水逐渐转化为半结合水,结合水小幅度减少的同时总水、半结合水及自由水明显增多。本研究所揭示的谷子浸泡和发芽过程中内部水分变化规律,为小米发芽产品的开发和应用奠定了理论基础。

In order to study the law in variation and distribution of internal water of millet during soaking and germination,low field nuclear magnetic resonance(LF-NMR)technology was used to dynamically monitor the whole process.The results showed that,during millet soaking,the bound water was the main portion,and part of the bound water gradually changed into free water,the total water,free water and bound water all increased rapidly and then tended to be stable.Therefore,the optimal soaking time was 10 h.During millet germination,the internal water was mainly semi bound water and bound water,part of bound water and free water gradually changed into semi bound water,and the combined water decreased slightly while the total water,semi bound water and free water increased significantly.The law of internal water change of millet during soaking and germination revealed in this study laid theoretical foundation for the development and application of millet germination products.