title: Lead accumulation in the straw mushroom, Volvariella volvacea, from lead contaminated rice straw and stubble.
abstract: Straw mushrooms were grown on lead contaminated rice straw and stubble. Study materials were dried, acid digested, and analyzed for lead using flame atomic absorption spectrophotometry. The results showed the highest lead concentration in substrate was 445.350 mg kg⁻¹ in Treatment 3 (T3) and the lowest was BD (below detection) in Treatment 1 (T1). The maximum lead content in straw mushrooms was 5.072 mg kg⁻¹ dw in pileus of T3 and the minimum lead content in straw mushrooms was BD in egg and mature (stalk and pileus) stage of T1. The lead concentration in straw mushrooms was affected by the age of the mycelium and the morphology of mushrooms. Mushrooms' lead uptake produced the highest accumulation in the cell wall. Some lead concentrations in straw mushrooms exceeded the EU standard (>3 mg kg⁻¹ dw).
authors.affiliation: Environmental Science and Technology Program, Department of Science, Faculty of Liberal Arts and Science, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand.
authors.forename: Thapakorn
authors.initials: T
authors.lastname: Kumhomkul
authors.forename: Thanawan
authors.initials: T
authors.lastname: Panich-pat
mesh_terms: D000363:Agaricales / Q000737:chemistry*; D005506:Food Contamination / Q000032:analysis; D007854:Lead / Q000032:analysis* / Q000378:metabolism*; D025282:Mycelium / Q000737:chemistry / Q000187:drug effects; D012275:Oryza / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry; D013054:Spectrophotometry, Atomic; D055367:Volvariella / Q000737:chemistry*
chemical_list: D007854:Lead