title: Occurrence of inorganic arsenic in edible Shiitake (Lentinula edodes) products.
abstract: 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.
authors.affiliation: Department of Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona E-08028, Spain.
authors.forename: Toni
authors.initials: T
authors.lastname: Llorente-Mirandes
authors.affiliation: Department of Vegetal Biology, University of Barcelona, Av. Diagonal 643, Barcelona E-08028, Spain.
authors.forename: Mercedes
authors.initials: M
authors.lastname: Barbero
authors.affiliation: Department of Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona E-08028, Spain; Water Research Institute, University of Barcelona, Av. Diagonal 684, Barcelona E-08034, Spain.
authors.forename: Roser
authors.initials: R
authors.lastname: Rubio
authors.affiliation: Department of Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, Barcelona E-08028, Spain; Water Research Institute, University of Barcelona, Av. Diagonal 684, Barcelona E-08034, Spain. Electronic address: fermin.lopez@ub.edu.
authors.forename: José Fermín
authors.initials: JF
authors.lastname: López-Sánchez
mesh_terms: D001151:Arsenic / Q000009:adverse effects*; D020942:Shiitake Mushrooms / Q000737:chemistry / Q000472:pathogenicity*
chemical_list: D001151:Arsenic
keywords: Arsenic speciation; Inorganic arsenic; LC–ICPMS; Lentinula edodes; Mushrooms; Shiitake