title: Determination and Multivariate Analysis of Mineral Elements in the Medicinal Hoelen Mushroom, Wolfiporia extensa (Agaricomycetes), from China.
abstract: Concentrations of 11 elements (As, Ba, Cd, Cu, Fe, Mn, Ni, Pb, Se, Sr, and Zn) from the medicinal and edible mushroom Wolfiporia extensa were determined using atomic fluorescence spectrometry (for As and Se) and inductively coupled plasma atomic emission spectrometry (for Ba, Cd, Cu, Fe, Mn, Ni, Pb, Sr, and Zn). All the samples were collected from 6 regions of Yuxi in Yunnan Province in the southwest of China and were digested with concentrated nitric acid and hydrogen peroxide in a microwave system. The recovery rates of standard addition ranged from 98.24% to 111.8%; the correlation coefficients were all above 0.999. The amounts of As (0.009-0.41 μg · g-1 dry weight [dw]), Cd (0-0.266 μg · g-1 dw), and Pb (0-2.6 μg · g-1 dw) were below the permissible limits in food that are promulgated by the World Health Organization. All the element concentrations determined in this study were proved at the common level. The result of principal component analysis indicated that 5 principal components were extracted from 11 elements, which revealed 74.7% of all variable information. The results of cluster analysis mainly showed the presence of 3 metal groups.
authors.affiliation: College of Traditional Chinese Medicine, Yunnan University of Traditional Chinese Medicine, Kunming, China; Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Sun
authors.affiliation: Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, China.
authors.forename: Ji
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, China.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, China.
authors.forename: Yuanzhong
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Traditional Chinese Medicine, Yunnan University of Traditional Chinese Medicine, Kunming, China; Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, China.
authors.forename: Wanyi
authors.initials: W
authors.lastname: Li
mesh_terms: D000363:Agaricales / Q000737:chemistry*; D002681:China; D005502:Food; D048690:Fruiting Bodies, Fungal / Q000737:chemistry; D008516:Medicine, Chinese Traditional; D008903:Minerals / Q000737:chemistry*
chemical_list: D008903:Minerals