| 米饭回生研究(I)脉冲核磁共振法测定谷物及淀粉糊化度与回生度方法的建立 |
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| 引用本文： | 姚远,丁霄霖,华聘聘.米饭回生研究(I)脉冲核磁共振法测定谷物及淀粉糊化度与回生度方法的建立[J].中国粮油学报,1999(5). |
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| 作者姓名： | 姚远 丁霄霖 华聘聘 |
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| 作者单位： | 无锡轻工大学!食品学院，214036，无锡轻工大学!食品学院，214036，无锡轻工大学!食品学院，214036 |
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| 摘 要： | 脉冲核磁共振法（ＰＮＭＲ） 测定谷物及淀粉糊化度与回生度，具有快速准确，对样品无损伤，且可测定完形谷物颗粒等优点。简要叙述了ＰＮＭＲ的工作原理，并以标准曲线法确定了ＰＮＭＲ测定值Ｓ’与米粉及米淀粉糊化度（ＤＧ）间的关系。结果表明：选择适宜的仪器参数ｆｓ ，可使Ｓ’—ＤＧ标准曲线具备良好的线性（ｒ２ ＞ ０．９９） ，同时，在米淀粉与米粉的Ｓ’—ＤＧ标准曲线之间存在着紧密的联系
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| 关 键 词： | PNMR 糊化度 回生度 标准曲线 |
Research on the Retrogradation of Cooked Rice(I) Establishment of Pulsed Nuclear Magnetic Resonance Method in the Measurement of the Degree of Gelatinization and Retrogradation for Cereal and Starch |
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| Yao Yuan,Ding Xiaolin,Hua Pingping.Research on the Retrogradation of Cooked Rice(I) Establishment of Pulsed Nuclear Magnetic Resonance Method in the Measurement of the Degree of Gelatinization and Retrogradation for Cereal and Starch[J].Journal of the Chinese Cereals and Oils Association,1999(5). |
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| Authors: | Yao Yuan Ding Xiaolin Hua Pingping |
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| Abstract: | Pulsed Nuclear Magnetic Resonance (PNMR) is a rapid,accurate and non-invasive method in the measurement of the degree of gelatinization (DG) and retrogradation (DR) for cereal and starch,especially for the whole cereal grains.In this article,the principle of PNMR has been briefly described.The standard curves were used to determine the relationships of the value S'of PNMR and DG.The results showed that with the appropriate value of instrumental parameter f S,the S'versus DG gave a satisfactory straight line (correlation coefficient r 2>0.99),and the standard curves between rice starch and rice flour had close relationships. |
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| Keywords: | PNMR degree of gelatinization degree of retrogradation standard curve |
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