| 基于低场核磁的稻谷储藏指标快速测定初探 |
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| 引用本文： | 邵小龙,张蓝月,殷灿,宋伟.基于低场核磁的稻谷储藏指标快速测定初探[J].粮食储藏,2013(6):29-32. |
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| 作者姓名： | 邵小龙 张蓝月 殷灿 宋伟 |
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| 作者单位： | [1]粮食储运国家工程实验室,210023 [2]南京财经大学食品科学与工程学院,210023 |
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| 基金项目： | 国家自然科学基金（31201443）;江苏省高校自然科学基金（12KJB550004）;“十二五”国家科技支撑计划（2011BAD03B02） |
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| 摘 要： | 本研究用国标方法和低场核磁仪器分别检测3种储藏年份和2个品种籼稻的含水量、粗脂肪含量、直链淀粉、发芽率等理化指标和横向弛豫曲线,简单分析弛豫曲线的变化规律,并采用偏最小二乘法将理化指标和核磁数据进行关联.结果表明,稻谷的横向弛豫强度衰减速度很快,弛豫时间段0～300ms为区分稻谷样品的重要特征信号区域;回归模型结果初步表明使用低场核磁能够较好地预测稻谷储藏指标,如含水量、脂肪含量、直链淀粉和发芽率等.
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| 关 键 词： | 稻谷储藏 低场核磁 偏最小二乘法 快速检测 |
PRELIMINARY STUDY ON RAPID DETECTION METHOD FOR STORED RICE QUALITY BY LF NMR |
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| Shao Xiaolong,＇,Zhang Lanyue,Yin Can,Song Wei.PRELIMINARY STUDY ON RAPID DETECTION METHOD FOR STORED RICE QUALITY BY LF NMR[J].Grain Storage,2013(6):29-32. |
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| Authors: | Shao Xiaolong ＇ Zhang Lanyue Yin Can Song Wei |
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| Institution: | 1＇2 (1 Food Science College, Nanjing University of Finance and Economies 210023) (2 National Engineering Laboratory of Grain Storage and Transportation 210023) |
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| Abstract: | Physiochemical indexes and transverse relaxation curves of indica paddy rice （three storage years and two varieties） were measured by GB methods and low field nuclear magnetic resonance （LF NMR）, re- spectively. Exploratory comparative analysis and partial least squares （PLS） were employed to these data. Paddy rice samples was with short transverse relaxation time （0--300ms）, which was important single re- gion for rice samples discrimination. The preliminary results showed that moisture content, fat content, amylose starch and germination rate o{ the sample can also be predicted accurately by LF NMR. |
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| Keywords: | rice storage low field NMR partial least squares （PLS） rapid detection |
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