Comprehensive Quality Evaluation of Agrimonia pilosa with Entropy Weight TOPSIS Method Based on Extract and Characteristic Spectrum / 中国药房

ABSTRACT

OBJECTIVE：To establish an overall quality evaluation model for Agrimonia pilosa based on extract and characteristic spectrum，and to provide evidence for comprehensive quality evaluation of the medicinal material and screening of high-quality provenance. METHODS ：Referring to different extraction method and solvent condition stated in 2015 edition of Chinese Pharmacopoeia （part Ⅳ），using the content and total peak area of HPLC characteristic chromatogram of extract as indexes，and the extraction technology was optimized by weighted comprehensive score. HPLC characteristic spectrum of 15 batches of A. pilosa was established ，and similarity evaluation and characteristic peak identification were performed. SPSS 25.0 software was used to conduct single factor analysis and Pearson correlation analysis for the extract content and total peak area of A. pilosa from different origins. The quality of medicinal materials from different origins were compared. Entropy weight TOPSIS method was adopted to evaluate comprehensive quality of A. pilosa using the extract content and total peak area of 15 batches of A. pilosa . RESULTS ：The extraction technology of A. pilosa extract，which was extracted with hot dip plating using 50％ ethanol as solvent ，was optimized. The similarity of 15 batches of A. pilosa was higher than 0.92，and 4 characteristic components were identified（ellagic acid ，quercetin，apigenin，kaempferol）. There were significant differences in average extract content and total peak area of characteristic chromatogram of A. pilosa from different origins （P＜0.05 or P＜0.01），and there was a certain positive correlation between them （r＝0.86，P＜0.01）. Results of entropy weight TOPSIS evaluation showed that the average Ci values of A. pilosa in Anhui ，Zhejiang，Sichuan，Henan and Jiangsu provinces were 0.689，0.351，0.218，0.308 and 0.361 respectively. CONCLUSIONS：The quality of A. pilosa from Anhui was the best ，that from Zhejiang and Jiangsu was better ，that from Henan was the second ，and that from Sichuan was poor. Established extraction technology and characteristic spectrum determination method of A. pilosa are stable and feasible. The entropy weight TOPSIS model is objective and quantifiable for comprehensive quality evaluation of A. pilosa ，and can effectively evaluate its quality.