ABSTRACT
In order to establish a rapid and non-destructive evaluation method for the identification of Armeniacae Semen Amarum and Persicae Semen from different origins, the spectral information of Armeniacae Semen Amarum and Persicae Semen in the range of 898-1 751 nm was collected based on hyperspectral imaging technology. Armeniacae Semen Amarum and Persicae Semen from different origins were collected as research objects, and a total of 720 Armeniacae Semen Amarum samples and 600 Persicae Semen samples were used for authenticity discrimination. The region of interest(ROI) and the average reflection spectrum in the ROI were obtained, followed by comparing five pre-processing methods. Then, partial least squares discriminant analysis(PLS-DA), support vector machine(SVM), and random forest(RF) method were established for classification models, which were evaluated by the confusion matrix of prediction results and receiver operating characteristic curve(ROC). The results showed that in the three sample sets, the se-cond derivative pre-processing method and PLS-DA were the best model combinations. The classification accuracy of the test set under the 5-fold cross-va-lidation was 93.27%, 96.19%, and 100.0%, respectively. It was consistent with the confusion matrix of the predicted results. The area under the ROC curve obtained the highest values of 0.992 3, 0.999 6, and 1.000, respectively. The study revealed that the near-infrared hyperspectral imaging technology could accurately identify the medicinal materials of Armeniacae Semen Amarum and Persicae Semen from different origins and distinguish the authentication of these two varieties.
Subject(s)
Drugs, Chinese Herbal , Hyperspectral Imaging , Least-Squares Analysis , Semen , Support Vector Machine , TechnologyABSTRACT
The commodity specification and grade of Curcumae Radix is an important indicator for evaluating the quality of medicinal materials. It is the basis for realizing the "price according to quality" of medicinal materials, and plays an extremely important role in regulating the market transactions and ensuring the clinical efficacy of Curcumae Radix. This paper makes a textual research on the historical evolution of the commodity specification and grade of Curcumae Radix, and sorts out the current status of the standard. At the same time, it investigates the current status of the market and origin of Curcumae Radix. It was found that the traditional classification and the quality of Curcumae Radix were mainly classified according to the indicators of origin and shape, color and other traits; In the "76 kinds of medicinal materials commodity specification standards" and "Chinese medicinal materials commodity specifications (225 kinds)", Curcumae Radix is mainly graded by traditional traits indicators, and the grading index is single; At present, Curcumae Radix is in a spontaneously grading market, and the market classification is not uniform; Curcumae Radix of origin are sold to major pharmaceutical markets and pharmaceutical factories in a unified way without grading of origin. Therefore, based on the results of the research and investigation of the specification and grade, it is proposed to improve and upgrade the specification and grade of Curcumae Radix in order to promote the formation of high-quality and high-priced trading systems. And at the same time to provide reference for the formulation of national or industrial standards for commodity specification and grade of Curcumae Radix.