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Accuracy in determination of rice constituent contents using near-infrared transmission spectroscopy and improvement in the accuracy

机译：使用近红外透射光谱法测定大米成分含量的准确性和准确性的提高

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摘要

The accuracy in determination of rice constituent contents using near-infrared transmission (NIRT) spectroscopy was validated. A commercial NIRT spectrometer, which was considered to be applicable to practical use for quality inspection at a rice grain elevator, was used in this study. The accuracy of the spectrometer improved after modifying light filters and calibration models. In the determination of moisture content, the coefficient of determination (r{sup}2) was 0.98, standard error of prediction (SEP) was 0.13%, and bias was -0.02%. In the determination of protein content, r{sup}2 was 0.90, SEP was 0.17%, and bias was 0.01%. These results proved that the spectrometer was sufficiently accurate to be used instead of reference analysis for measuring moisture content and protein content of brown rice. The spectrometer could be also used with sufficiently high accuracy at a grain elevator for samples in a temperature range of 10 ℃ to 30 ℃ and for samples with a rough rice percentage of less 10%.
机译：验证了使用近红外透射（NIRT）光谱法测定大米成分含量的准确性。在这项研究中使用了商用NIRT光谱仪，该光谱仪被认为可实际用于稻谷升降机的质量检查。修改滤光片和校准模型后，光谱仪的精度得以提高。在水分含量的测定中，测定系数（r {sup} 2）为0.98，预测标准误差（SEP）为0.13％，偏差为-0.02％。在蛋白质含量的测定中，r {sup} 2为0.90，SEP为0.17％，偏差为0.01％。这些结果证明，该分光光度计足够准确，可以用来代替参考分析来测量糙米的水分含量和蛋白质含量。该光谱仪还可以在谷物升降机上以足够高的精度用于温度范围为10℃至30℃的样品以及粗米百分比小于10％的样品。

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