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| Evaluation of Essential and Toxic Element Concentrations in Buckwheat by Experimental and Chemometric Approaches |
| PENG Lian-xin, HUANG Yan-fei, LIU Yuan, ZHANG Zhi-feng, LU Lu-yang , ZHAO Gang |
1、College of Biotechnology Industry, Chengdu University, Chengdu 610106, P.R.China
2、Institute of Ethnic Medicine, Southwest University for Nationalities, Chengdu 610041, P.R.China
3、Key Laboratory of Traditional Chinese Medicine Resource and Compound Prescription, Ministry of Education/Hubei University of Chinese
Medicine, Wuhan 430065, P.R.China |
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摘要 The essential and toxic element concentrations in buckwheat were analyzed by inductively coupled plasma optical emission spectrometer (ICP-OES). The concentration data were subjected to common chemometrics analyses, including correlation analysis (CA), principal component analysis (PCA) and hierarchical cluster analysis (HCA), to gain better understanding of the differences among the tested samples. Our results indicated that the essential and toxic element concentrations were not different between Fagopyrum tataricum (L.) Gaertn and F. esculentum Moench. The element concentrations varied among buckwheat samples from different sources. Commercial tartary buckwheat tea contained several essential elements, thus, could be used as the source of essential elements. The detection of toxic heavy metals in commercial tartary buckwheat tea suggested that safety issue of such buckwheat products should be seriously concerned. Our results also revealed that the place of origin and the processing protocol of tartary buckwheat affected the element concentrations of the commercial form. The implications to the quality control and safety evaluation of buckwheat were extensively discussed.
Abstract The essential and toxic element concentrations in buckwheat were analyzed by inductively coupled plasma optical emission spectrometer (ICP-OES). The concentration data were subjected to common chemometrics analyses, including correlation analysis (CA), principal component analysis (PCA) and hierarchical cluster analysis (HCA), to gain better understanding of the differences among the tested samples. Our results indicated that the essential and toxic element concentrations were not different between Fagopyrum tataricum (L.) Gaertn and F. esculentum Moench. The element concentrations varied among buckwheat samples from different sources. Commercial tartary buckwheat tea contained several essential elements, thus, could be used as the source of essential elements. The detection of toxic heavy metals in commercial tartary buckwheat tea suggested that safety issue of such buckwheat products should be seriously concerned. Our results also revealed that the place of origin and the processing protocol of tartary buckwheat affected the element concentrations of the commercial form. The implications to the quality control and safety evaluation of buckwheat were extensively discussed.
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Received: 12 July 2013
Accepted:
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| Fund: We acknowledge financial support from the Key Technologies R&D Program of China during the 12th Five-Year Plan period (2012BAI27B07), the National Natural Science Foundation of China (81173653), the Administration of Traditional Chinese Medicine Department of Sichuan Province, China (2010-78), the Research Funds of Southwest University for Nationalities, China (13NLY01), and the Earmarked Fund for China Agriculture Research System (CARS-08-D-3). |
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Corresponding Authors:
ZHAO Gang, Tel/Fax: +86-28-84616628, E-mail:
zhaogang@cdu.edu.cn; LIU Yuan, Tel/Fax: +86-28-85528812, E-mail: yuanliu163@aliyun.com.cn, 499769896@qq.com
E-mail: zhaogang@cdu.edu.cn;yuanliu163@aliyun.com.cn, 499769896@qq.com
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| About author: PENG Lian-xin, E-mail: penglianxin@cdu.edu.cn; HUANG Yan-fei, E-mail: 47118549@qq.com; |
Cite this article:
PENG Lian-xin, HUANG Yan-fei, LIU Yuan, ZHANG Zhi-feng, LU Lu-yang , ZHAO Gang.
2014.
Evaluation of Essential and Toxic Element Concentrations in Buckwheat by Experimental and Chemometric Approaches. Journal of Integrative Agriculture, 13(8): 1691-1698.
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