Near-infrared spectroscopy model for detecting content of erucic acid in peanut seeds and application

Abstract

The invention discloses a near-infrared spectroscopy model for detecting content of erucic acid in peanut seeds, a model construction method and a method for detecting the peanut seeds by use of the model and belongs to the technical field of fast detection of quality of processed peanut products. The near-infrared spectroscopy model performs fitting spectrum processing by collecting near-infraredspectral data of a sample and using chemical values measured with a gas chromatographic method, and the model is optimized and constructed with a partial least squares method; singular values are rejected through repeated internal cross validation, the best spectrum preprocessing method, the best spectral region and the best dimensionality are selected, and high-quality near-infrared quantitativeanalysis model is constructed by comparing a determination coefficient of the model and the mass of an RMSECV (root mean square error cross validation) measurement model. According to the near-infrared spectroscopy model, detection of the content of the erucic acid in the peanut seeds can be simple and easy, the measurement speed is high, the accuracy is high, no chemical reagent is required, andtechnical guide can be provided for low-erucic-acid seed breeding of peanuts.

Description

technical field [0001] The invention belongs to the technical field of rapid quality measurement of peanut processed products, and in particular relates to a near-infrared spectrum model and application for detecting erucic acid content of peanut seeds. Background technique [0002] Peanut is the main oil crop in the world, rich in protein and fat. Peanut fat contains a variety of fatty acids, most of which are beneficial to the body, but there are also fatty acids like erucic acid that are harmful to the human body. Animal experiments have shown that eating rapeseed oil with high erucic acid content can cause myocardial fat deposition. Investigations and studies on heart disease patients have shown that heart disease patients have abnormal cardiovascular function. If a small amount of erucic acid decomposed by enzymes accumulates in the blood of these patients every day, it will lead to myocardial fat deposition and thickening of blood vessel walls. There are serious haza...

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Problems solved by technology

[0004] The traditional determination methods of erucic acid include iodometric method and gas chromatography, etc., but the cost is high, time-consuming, and destructive to a certain extent, which is not conducive to the development of low-erucic acid breeding in peanuts, while near-infrared technology has the advantages of low cost, non-destructive, and rapid

Near-infrared technology has been applied to improve the quality of many crops. A near-infrared model that can accurately predict the content of oleic acid, fat, and protein has been successfully established on peanuts, but a similar near-infrared model for erucic acid content in peanuts has not been reported so far.

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