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Direct quantitative speciation of selenium in selenium-enriched yeast and yeast-based products by X-ray absorption spectroscopy confirmed by HPLC-ICP-MS
Li YF(李玉锋); WANG XIAOYAN; Li B(李柏); Gao YX(高愈希); Chen CY(陈春英); Li, YF; Wang, XY; Wang, LM; Li, B; Gao, YX; Chen, CY
2010
发表期刊JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
卷号25期号:3页码:426-430
通讯作者[Li Yu-Feng ; Wang Xiaoyan ; Li Bai ; Gao Yuxi ; Chen Chunying] Chinese Acad Sci, Inst High Energy Phys, CAS Key Lab Nucl Analyt Tech, Beijing 100049, Peoples R China ; [Li Yu-Feng ; Wang Xiaoyan ; Li Bai ; Gao Yuxi ; Chen Chunying] Chinese Acad Sci, Inst High Energy Phys, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China ; [Wang Xiaoyan] Sichuan Normal Univ, Chengdu 610068, Peoples R China ; [Wang Liming ; Chen Chunying] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China
文章类型Article
摘要Selenium (Se)-enriched yeast has probably been the most widely investigated food supplement and the literature on Se speciation in the Se-enriched yeast is fairly abundant, however, the strategy for Se speciation commonly requires complicated pretreatment procedures such as digestion and stepwise extraction. The present study was carried out to apply X-ray absorption spectroscopy (XAS) for the direct speciation of Se species with minimal pretreatment steps. By comparison of the XAS spectra of Se-enriched yeast samples with that of the standard Se species, organic R-Se-R (represented by selenomethionine) was found to be the main chemical form of Se. Quantitative speciation through principal component analysis (PCA) and least-squares linear combination (LC) fitting the Se-enriched yeast samples found 83%, 85% and 81% of R-Se-R (probably selenomethionine which is known to exist in yeast) for SelenoPrecise (R) yeast, SelenoPrecise (R) tablets, and Xiweir (R) tablets, respectively, which is in agreement with those from HPLC-ICP-MS analysis. More broadly, XAS can also be applied to other Se-enriched products with the merit of minimal pretreatment. However since XAS, specifically XANES, can only identify the chemical type rather than specific molecules, other methods like HPLC-ICP-MS are necessary to give not only the coordination environment of Se but also the identity of the Se species.
学科领域Chemistry; Spectroscopy
研究领域[WOS]Chemistry ; Spectroscopy ; Chemistry ; Spectroscopy
DOI10.1039/b921570k
URL查看原文
语种英语
研究领域[WOS]Chemistry ; Spectroscopy ; Chemistry ; Spectroscopy
WOS类目Chemistry, Analytical ; Spectroscopy
WOS记录号WOS:000274961600023
引用统计
被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237435
专题多学科研究中心
实验物理中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Li YF,WANG XIAOYAN,Li B,et al. Direct quantitative speciation of selenium in selenium-enriched yeast and yeast-based products by X-ray absorption spectroscopy confirmed by HPLC-ICP-MS[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2010,25(3):426-430.
APA 李玉锋.,WANG XIAOYAN.,李柏.,高愈希.,陈春英.,...&Chen, CY.(2010).Direct quantitative speciation of selenium in selenium-enriched yeast and yeast-based products by X-ray absorption spectroscopy confirmed by HPLC-ICP-MS.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,25(3),426-430.
MLA 李玉锋,et al."Direct quantitative speciation of selenium in selenium-enriched yeast and yeast-based products by X-ray absorption spectroscopy confirmed by HPLC-ICP-MS".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 25.3(2010):426-430.
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