Occurrence of inorganic arsenic in edible Shiitake (Lentinula edodes) products

• Published in: Food chemistry Vol. 158; pp. 207 - 215
• Main Authors: Llorente-Mirandes, Toni, Barbero, Mercedes, Rubio, Roser, López-Sánchez, José Fermín
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.09.2014; Elsevier; Elsevier B.V
• Subjects: Arsenic; Arsenic - adverse effects; Arsenic speciation; Arsènic; Biological and medical sciences; Bolets comestibles; Chemical and industrial products toxicology. Toxic occupational diseases; Edible mushrooms; Food toxicology; General pharmacology; Inorganic arsenic; LC–ICPMS; Lentinula edodes; Medical sciences; Metals and various inorganic compounds; Mushrooms; Organometallic chemistry; Pharmacognosy. Homeopathy. Health food; Pharmacology. Drug treatments; Química organometàl·lica; Shiitake; Shiitake Mushrooms - chemistry; Shiitake Mushrooms - pathogenicity; Toxicologia alimentària; Toxicology; Arsenic speciation; Shiitake; Mushrooms; Inorganic arsenic; Lentinula edodes; LC–ICPMS; Arsenic; Basidiomycota; Medicinal plant; Lentinus edodes; LC-ICPMS; Fungi; Plant origin; Speciation; Food
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2014.02.081

•Arsenic speciation in Shiitake products and in home-cultivated Shiitake is reported.•Inorganic arsenic (iAs) is the major compound in all Shiitake products studied.•Inorganic arsenic concentrations up to 1.38mgAskg−1 in fresh Shiitake are found.•Reliable data on iAs contents in edible mushrooms are reported. 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 1.38mgAskg−1dm (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.