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| Rapid determination of oryzanol in rice bran oil by near-infrared spectroscopy |
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| KeyWord:near-infrared spectroscopy oryzanol quantitative analysis model rice bran oil |
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| Abstract: |
| In order to determine the oryzanol content in rice bran oil with a simple, rapid and accurate manner, a quantitative analysis model of near-infrared spectroscopy combined with partial least squares method for the determination of oryzanol content in rice bran oil was established by using the high performance liquid chromatography method of LS/T 6121.2-2017 as the reference method. The results showed that the coefficient of deterination of quantitative analysis model established was 99.81%, the standard deviation of prediction was 0.028 49%, and the standard deviation of cross validation was 0.031 13%. The total of 99 samples were used to the external independent verification of the quantitative analysis model, and the coefficient of deterination of prediction was 99.81%, the standard deviation of prediction was 0.030 90%, the absolute error was in the range of -0.081%-0.057%, relative error was in the range of -11.86%-9.84%. The established quantitative analysis model has good prediction effect and high accuracy, and can be used for the determination of oryzanol content in rice bran oil. |
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