A rapid analysis method of safflower (Carthamus tinctorius L.) using combination of computer vision and near-infrared.

Ling Lin, Manfei Xu, Lijuan Ma, Jingqi Zeng, Fangyu Zhang, Yanjiang Qiao, Zhisheng Wu

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2020 Aug 05

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The quality of safflower (Carthamus tinctorius L.) in the market is uneven due to the problems of dyeing and adulteration of safflower, and there is no perfect standard for the classification of quality grade of safflower at present. In this study, computer vision (CV) and near-infrared (NIR) were combined to realize the rapid and nondestructive analysis of safflower. First, the partial least squares discrimination analysis (PLS-DA) model was used to qualitatively identify the dyed safflower from 150 samples. Then the partial least squares (PLS) model was used for quantitative analysis of the hydroxy safflower yellow pigment A (HSYA) and water extract of undyed safflower. Herein, the discrimination rate of PLS-DA model reached 100%, and the residual predictive deviation (RPD) values of the PLS models for HSYA and water extract were 2.5046 and 5.6195, respectively. It indicated that the rapid analysis method combining CV and NIR was reliable, and its results can provide important reference for the formulation of safflower quality classification standards in the market. Copyright © 2020 Elsevier B.V. All rights reserved.

Citation

Ling Lin, Manfei Xu, Lijuan Ma, Jingqi Zeng, Fangyu Zhang, Yanjiang Qiao, Zhisheng Wu. A rapid analysis method of safflower (Carthamus tinctorius L.) using combination of computer vision and near-infrared. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 2020 Aug 05;236:118360