Application of Relative Quality Constant in Grade Evaluation of Codonopsis Radix Slices
10.13422/j.cnki.syfjx.20202064
- VernacularTitle:相对质量常数在党参饮片等级评价中的应用
- Author:
Rui-ming ZHANG
1
;
Sha-sha ZHANG
1
;
Jing HOU
1
;
Xiao-ting ZHANG
1
;
Yun-e BAI
1
;
Jian-ping GAO
1
;
Zhen-hong LEI
2
;
Yu-long WANG
2
;
Shu-xian XIAO
2
Author Information
1. School of Pharmacy，Shanxi Medical University，Taiyuan 030001，China
2. Shanxi Zhendong Pharmaceutical Co. Ltd.，Changzhi 047100，China
- Publication Type:Research Article
- Keywords:
Codonopsis Radix slices;
relative quality constant;
Codonopsis pilosula polysaccharide;
grade evaluation
- From:
Chinese Journal of Experimental Traditional Medical Formulae
2021;27(1):162-171
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To establish the grade evaluation method for Codonopsis Radix slices based relative quality constants， in order to provide scientific theoretical basis for grading of Codonopsis Radix slices. Method:Through literature and market research，the main production areas of Codonopsis Radix slices were determined，and 67 batches of Ludangshen slices（52 batches） and Baitiaodang slices （15 batches） were collected. The appearance traits （average quality and average thickness of Codonopsis Radix slices） were observed and measured. According to Chinese Pharmacopoeia （2015 edition）， the extract and the content of Codonopsis pilosula polysaccharide was determined by phenol-sulphoacid method. Then the relative quality constant was calculated，and the results of grade evaluation were evaluated through systematic cluster analysis and correlation analysis. Result:Relative quality constants of 67 batches of Codonopsis Radix slices were between 0.32-2.97. If these samples were divided into three grades：the first-grade relative quality constants were greater than or equal to 2.08，the second grade was greater than or equal to 0.89 but less than 2.08，while the third grade was less than 0.89. The results of systematic cluster analysis showed that 67 batches of Codonopsis Radix slices were clustered into 3 categories，and the results were basically consistent with the classification. The correlation analysis showed a positive correlation between the content of the extracts and the polysaccharide content （P<0.05）. Conclusion:This method links the extrinsic characteristics to the intrinsic quality，and objectively grade Codonopsis Radix slices， so as to provide a basis for its grade standards.
