Cottonseed gossypol content non-destructive measurement method based on near-infrared spectrum technology

Abstract

The invention discloses a cottonseed gossypol content non-destructive measurement method based on the near-infrared spectrum technology. Different cottonseed samples are collected, the spectrum of the cottonseed samples is collected through a near-infrared spectrograph, near-infrared spectrum data are preprocessed through various spectrum preprocessing methods, the gossypol content of the samples is precisely measured through an efficient liquid chromatography method, a correction model is constructed through the partial least square method, an optimal near-infrared spectrum correction model is determined through predictive related coefficients, residual predictive deviations, predictive root mean square errors and cross validation root mean square errors, the cottonseed samples to be measured are detected through the optimal near-infrared spectrum correction model, and the gossypol content of the cottonseed samples to be measured is obtained. By means of the near-infrared spectrograph, a spectrogram of cottonseeds is acquired, measurement speed is high, precision is high, chemical reagents are not needed, the method is non-destructive, green and capable of quickly analyzing the gossypol content in the cottonseeds, and the method plays an important role in developing and utilizing cottonseed by-products and cultivating new cotton varieties.

Description

technical field [0001] The invention discloses a method for measuring the content of agricultural by-products. It specifically relates to a non-destructive determination method of gossypol content in cottonseed based on near-infrared spectroscopy, using near-infrared spectroscopy and chemometric multivariate correction technology to perform non-destructive determination of gossypol content in whole cottonseeds. Background technique [0002] Cottonseed is the main by-product of cotton, which has a wide range of uses. Its output is about 1.5 times that of cotton fiber. The annual output of cottonseed in the world can reach 28-30 million tons. Fat (28.24-44.05%) is a potential source of protein and edible oil. China is the largest cottonseed producer in the world, with an annual production capacity of 8 million tons of cottonseed, 1.48 million tons of extractable cottonseed oil and 1.4 million tons of cottonseed protein. In addition, the composition of each amino acid in cott...

AI Technical Summary

Problems solved by technology

Determination of gossypol content according to routine is time-consuming and laborious, and requires a large amount of toxic chemical reagents, which is expensive and pollutes the environment, which adds difficulty to the nutritional evaluation of cottonseed

In addition, the traditional chemical method of shelling and grinding to analyze the gossypol content in cottonseed will inevitably consume test materials, and the test samples cannot be recycled, which limits its application in improving the nutritional quality of cottonseed

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