%0 Journal Article %A YANG Tian-wei1 %A 2 %A ZHANG Ji2 %A Jerzy FALANDYSZ3 %A Graz·yna KRASI-SKA3 %A Martyna SABA3 %A WANG Yuan-zhong2** %A LIU Hong-gao1** %T Mercury concentration in common Boletus fungi from Yunnan Province and ingestion safety assessment. %D 2015 %R %J Chinese Journal of Ecology %P 3518-3525 %V 34 %N 12 %X Mercury (Hg) is one of the most harmful heavy metals to human. Many edible mushrooms accumulate considerable levels of Hg, and therefore it is necessary to determine and evaluate Hg content in edible mushrooms. The contents of total mercury were determined in caps and stipes of 85 bolete samples obtained from Yunnan by coldvapor atomic absorption spectroscopy and direct mercury analyzer. The Hg accumulation characteristics of the bolete mushrooms were analyzed according to the cap and stipe total Hg content ratio (Q(C/S)) of the samples from the same sites. The health safety of the samples was evaluated according to Hg provisional tolerable weekly intake (PTWI) recommended by the United Nations Food and Agriculture Organization and the World Health Organization (FAO/WHO) and the China national food safety standard maximum levels of contaminants in foods (GB 2762-2012). The results showed that the contents of total Hg in the caps and stipes were 0.13-22.00 mg·kg-1 dry weight (DW) and 0.20-8.40 mg·kg-1 DW, respectively. There were obvious differences in total Hg contents among different samples. The ratios of total Hg contents in the caps to that in the stipes (Q(C/S)) were 0.28-4.08, and 92% samples were higher than 1 in Q(C/S) value, which demonstrated that the Hg accumulation ability in caps was stronger than that in stipes in most samples. The contents of total Hg of all the test samples exceeded the standard of GB 2762-2012 (Hg≤0.1 mg·kg-1). According to the PTWI standard, if adults (60 kg) eat 300 g fresh bolete mushrooms a week, Hg intakes of most samples would be below the acceptable intakes without health risk, but the intakes in a few of samples were higher than the standard with a potential risk. The contents of total Hg in Boletus species were closely related to species, environment, acquisition time and other factors, so the ingestion and safety assessment of Boletus mushrooms should consider all these factors. %U http://www.cje.net.cn/EN/abstract/article_22272.shtml