期刊
FOOD CHEMISTRY
卷 158, 期 -, 页码 207-215出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.02.081
关键词
Inorganic arsenic; Shiitake; Lentinula edodes; Mushrooms; Arsenic speciation; LC-ICPMS
资金
- DGICYT [CTQ2010-15377]
- Grup de Recerca Consolidat [SGR2009-1188]
- Ajuts Predoctorals de Formacio en Docencia i Recerca (ADR) of the University of Barcelona
The present study reports arsenic speciation analysis in edible Shiitake (Lentinula edodes) products. The study focused on the extraction, and accurate quantification of inorganic arsenic (iAs), the most toxic form of arsenic, which was selectively separated and determined using anion exchange LC-ICPMS. A wide variety of edible Shiitake products (fresh mushrooms, food supplements, canned and dehydrated) were purchased and analysed. A cultivated Shiitake grown under controlled conditions was also analysed. The extraction method showed satisfactory extraction efficiencies (>90%) and column recoveries (>85%) for all samples. Arsenic speciation revealed that iAs was the major As compound up to 1.38 mg As kg(-1) dm (with a mean percentage of 84% of the total arsenic) and other organoarsenicals were found as minor species. Shiitake products had high proportions of iAs and therefore should not be ignored as potential contributors to dietary iAs exposure in populations with a high intake of Shiitake products. (C) 2014 Elsevier Ltd. All rights reserved.
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