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Rapid determination method for evaluation of storage quality of grain

A technology for rapid determination of food, applied in measuring devices, color/spectral characteristic measurement, material analysis through optical means, etc., can solve the problems of cumbersome procedures, long time, and difficulty in analyzing a large number of grain samples, and achieve simple sample pretreatment , detect the effect of fast

Inactive Publication Date: 2010-02-24
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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Problems solved by technology

These methods are often carried out in the laboratory for the determination of fatty acid values, and the analysis accuracy is relatively high. However, the procedures in the sample pretreatment and determination process are cumbersome, time-consuming, and costly. It is more difficult to analyze a large number of grain samples.

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  • Rapid determination method for evaluation of storage quality of grain
  • Rapid determination method for evaluation of storage quality of grain
  • Rapid determination method for evaluation of storage quality of grain

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Embodiment Construction

[0035] The rapid determination method for judging grain storage quality proposed by the present invention is described as follows in conjunction with the accompanying drawings and examples.

[0036] S101: Collect representative grain samples to form a modeling sample set;

[0037] Specifically, according to the scope of application of the calibration model, collect grain samples of different storage years to form a modeling sample set;

[0038] S102: collecting the near-infrared spectrum of the sample and performing preprocessing;

[0039] Specifically, the preprocessing method can be selected from one or more of centering, standard variable transformation, additional scatter correction, orthogonal signal correction, smoothing, wavelet denoising, derivation transformation, and genetic algorithm wavelength optimization; The purpose of the processing is to remove the influence of systematic noise, random noise and wavelengths not related to fatty acids in the spectrum, and to c...

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Abstract

The invention relates to the technical field of quality detection and provides a rapid determination method for the evaluation of the storage quality of grain, which comprises: S1: grain samples having different storage years are acquired according to the grain samples to be evaluated, thus obtaining a modeling sample set; S2: a near-infrared spectrum of the modeling sample set is obtained by means of acquisition and is pretreated; S3: a fatty acid value of the modeling sample set is obtained by means of measurement; S4: a correction relation for the modeling sample set is established according to the near-infrared spectrum and the fatty acid value, thus obtaining a correction model; and S5: the storage quality of the grain samples to be evaluated is evaluated according to the correction model. On the basis of near-infrared spectrum technique, the rapid determination method is in no need of the sample pretreatment, fast in detection, great in convenience and simplicity and suitable forthe determination of the fatty acid value in kernel of grain crop such as paddy rice, wheat, corn, soybean and the like, thus technically supporting the real-time detection and surveillance of the storage quality of grain.

Description

technical field [0001] The invention relates to the technical field of agricultural product quality detection, relates to grain storage quality evaluation, and in particular to a rapid determination method for judging grain storage quality based on near-infrared spectroscopy. Background technique [0002] With the rapid development of the economy and the continuous improvement of people's living standards, the quality and safety of agricultural products has received widespread attention. The decline in the quality of grain storage is a malignant change that occurs during the grain storage process. It is not suitable for processing finished grains for human consumption, involving multiple links in grain storage, transportation, sales, and processing. Due to its industrial nature and concealment, the quality of grain storage is not easy to be noticed by consumers, and it is also difficult for processors to detect. Grain storage quality that is severely unsuitable for storage o...

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Application Information

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IPC IPC(8): G01N21/35G01N21/3563G01N21/359
Inventor 马智宏潘立刚王北洪韩平陆安祥赵柳
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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