Method for rapidly detecting amylose content in rice by near infrared spectrum and visible light analyzer
A technology of amylose content and near-infrared spectroscopy, which is applied in the measurement of color/spectral properties, material analysis by optical means, and measurement devices, etc., can solve the problem of low accuracy and achieve the effect of simple operation.
Inactive Publication Date: 2014-02-12
NORTHWEST A & F UNIV
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Chinese patent ZL01140315.2 discloses a method and device for quality inspection of grains, which uses near-infrared spectral information from 890 nm to 1100 nm, and mainly detects the content of protein, oil, starch, moisture and other components in grains , but only using near-infrared light to detect the content of starch has been tested and shown that the accuracy is not high, and it is difficult to replace the traditional method
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Embodiment 1
[0029] Step S1: Collect three groups of rice samples;
[0030] The first group: collected rice samples harvested from 2008 to 2010, a total of 325 samples to establish a near-infrared calibration model; the second group: 111 samples harvested in 2010 to establish a comprehensive calibration model; the third group: 2009, 2010 57 samples were harvested to verify the accuracy of the near-infrared model and the comprehensive calibration model;
[0031] Step S2: using an automatic analyzer to measure the amylose content in rice;
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The invention discloses a method for rapidly detecting the amylose content in rice by near infrared spectrum and a visible light analyzer. The method comprises the following steps: S1: collecting rice samples; S2: determining the amylose content in rice by adopting a standard method; S3: collecting near infrared spectrum data of the samples by utilizing a near infrared spectroscopy; S4: pretreating the near infrared spectrum data; S5: correlating the near infrared spectrum data with an amylose value determined by the standard method, and establishing a near infrared calibration model; S6: carrying out external verification on the near infrared calibration model; S7: correlating the amylose value determined by the standard method with a color value determined by a visible light analyzer by utilizing a predicted value obtained by the near infrared calibration model, and establishing a comprehensive calibration model; and S8: carrying out external verification on the comprehensive verifying model. The method provided by the invention has the advantages of high analyzing speed, high efficiency, low cost, no pollution to the environment and the like, and the method can provide reliable basis for the rice quality analysis and rice quality control.
Description
technical field [0001] The invention designs a method for quickly detecting the amylose content in rice by using a near-infrared spectrum and a visible light analyzer. Background technique [0002] 90% of the world's total rice production is used for direct human consumption, and what is directly related to consumers is the edible and nutritional quality of rice. As amylose affects the taste, expansion rate and water absorption rate of rice, the color, luster, viscosity and hardness of rice determine the quality of rice. The amylose content is usually determined by colorimetry, and it takes at least several hours to measure a sample, which is not suitable for measuring the amylose content of large batches of rice. Therefore, it is necessary to find a method for quickly and accurately detecting the amylose content in rice, so as to provide a reliable basis for the quality analysis and quality control of rice. [0003] In recent years, near-infrared spectroscopy has been wid...
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IPC IPC(8): G01N21/3563G01N21/25
Inventor 李瑞傅隆生
Owner NORTHWEST A & F UNIV
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