食用墨汁菌（Cyanoboletus pulverulentus）中的砷超积累和形态。
Arsenic hyperaccumulation and speciation in the edible ink stain bolete (Cyanoboletus pulverulentus).
机构信息
University of Graz, Institute of Chemistry, Universitätsplatz 1, 8010 Graz, Austria.
Nuclear Physics Institute, The Czech Academy of Sciences, Hlavní 130, 25068 Husinec-Řež, Czech Republic.
出版信息
Food Chem. 2018 Mar 1;242:225-231. doi: 10.1016/j.foodchem.2017.09.038. Epub 2017 Sep 8.
Abstract
The edible ink stain bolete (Cyanoboletus pulverulentus) was found to hyperaccumulate arsenic. We analyzed 39 individual collections determined as C. pulverulentus, mostly from the Czech Republic. According to our results, concentrations of arsenic in C. pulverulentus fruit-bodies may reach 1300mgkg dry weight. In most collections, data for total and bioavailable arsenic in underlying soils were collected but no significant correlation between the soil arsenic content and arsenic concentrations in the associated fruit-bodies was found. Within the fruit-bodies, we found the majority of arsenic accumulated in the hymenium. Besides occasional traces of methylarsonic acid (MA), the arsenic speciation in all mushroom samples consisted solely of dimethylarsinic acid (DMA) and no inorganic arsenic was detected. Because of the carcinogenic potential of DMA, C. pulverulentus should not be recommended as an edible mushroom and its consumption should be restricted.
摘要
可食用墨汁蕈（Cyanoboletus pulverulentus）被发现可超量积累砷。我们分析了 39 个被确定为 C. pulverulentus 的个体样本，这些样本主要来自捷克共和国。根据我们的结果，C. pulverulentus 子实体中的砷浓度可能达到 1300mg/kg 干重。在大多数样本中，我们收集了土壤中总砷和生物可利用砷的数据，但未发现土壤砷含量与相关子实体中砷浓度之间存在显著相关性。在子实体中，我们发现大部分砷积累在菌褶中。除了偶尔存在微量的甲基砷酸（MA）外，所有蘑菇样本中的砷形态仅由二甲基砷酸（DMA）组成，未检测到无机砷。由于 DMA 的致癌潜力，C. pulverulentus 不应被推荐为可食用蘑菇，其食用应受到限制。
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