2012年2月
Determination of the Geographic Origin of Rice by Chemometrics with Strontium and Lead Isotope Ratios and Multielement Concentrations
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
- ,
- ,
- 巻
- 60
- 号
- 7
- 開始ページ
- 1628
- 終了ページ
- 1634
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/jf204296p
- 出版者・発行元
- AMER CHEMICAL SOC
The objective of this study was to develop a technique for determining the country of origin of rice in the Japanese market. The rice samples included a total of 350 products grown in Japan (n = 200), the United States (n = 50), China (n = 50), and Thailand (n = 50). In this study, Sr-87/Sr-86 and Pb isotope ((204)pb, (206)pb, Pb-207 and Pb-208) ratios and multielement concentrations (Al, Fe, Co, Ni, Cu, Rb, Sr, and Ba) were determined by high-resolution inductively coupled plasma mass spectrometry. By combining three chemometric techniques based on different principles and determination criteria, the countries of origin of rice were determined. The predictions made by 10-fold cross-validation were around 97% accurate. The presented method demonstrated the effectiveness of determining the geographic origin of an agricultural product by combining several chemometric techniques using heavy element isotope ratios and multielement concentrations.
- リンク情報
- ID情報
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- DOI : 10.1021/jf204296p
- ISSN : 0021-8561
- Web of Science ID : WOS:000300644100005