Comparison of the Contents of 14 Inorganic Elements in Cyperus rotundus from Different Origins Based on Stoichiometry
- VernacularTitle:基于化学计量学的不同产地香附中14种无机元素的含量比较
- Author:
Na XU
1
;
Shiyu WANG
1
;
Wenbing LI
2
;
Chaomei FU
1
;
Hulan CHEN
1
;
Junrong LU
1
Author Information
1. College of Pharmacy，Chengdu University of TCM，Chengdu 611137，China
2. Institute of Qinghai-Tibetan Plateau，Southwest Minzu University，Chengdu 610225，China
- Publication Type:Journal Article
- Keywords:
Cyperus rotundus;
Origins;
Microwave digestion method;
ICP-MS;
Inorganic elements;
Contents;
Principal
- From:
China Pharmacy
2021;32(3):289-294
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE：To establish the method for the content determination of inorganic elements in Cyperus rotundus ，and to compare the contents of 14 kinds of inorganic elements in C. rotundus from different producing areas ，and to provide theoretical basis for its quality control and high quality resources development . METHODS ：The samples were processed by microwave digestion，and ICP-MS method was used to determine the contents of Na ，Mg，K，Ca，Mn，Fe，Ni，Cu，Zn，As，Se，Sr，Cd and Pb. SPSS 23.0 software were used for principal component analysis （PCA）and cluster analysis. RESULTS ：The average contents of above 14 kinds of inorganic elements in C. rotundus from different producing areas were 168.62，753.71， 6 938.33，24.31，14.69，197.77，0.60，2.43，26.89，0.21，0.06，5.64，0.05，0.32 mg/kg，respectively. The results of PCA showed that the cumulative variance contribution rate of the first four principal components was 86.203％，which could reflect most of the information of the original data. C. rotundus from Shandong ，Jiangxi，Shanxi，Hubei and Yunnan ranked the top five places in terms of comprehensive score of inorganic element contents. The results of cluster analysis showed that the samples from 9 producing areas were clustered into 5 categories，showing the characteristics of clustering by producing area. From the perspective of inorganic elements ，the quality of C. rotundus from East China ，Central China ，North China and Southwest China was better than that from South China. CONCLUSIONS ：Essential trace elements like Na ，Mg，K，Ca，Mn，Fe，Cu，Zn，Sr are rich in C. rotundus，and there are small amounts of Ni ，As，Se，Cd，Pb elements in it. The contents difference of inorganic elements in C. rotundus from different origins may related to the geographical area it belongs to.
