Cadmium in edible mushrooms from NW Spain: Bioconcentration factors and consumer health implications

Mushrooms do not constitute a significant portion of the human diet, but the consumption of wild and cultivated mushrooms has become increasingly in recent years. Some species accumulate high levels of toxic metals, both in unpolluted and polluted areas. In this study, we examined the accumulation c...

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Bibliographic Details
Published in:Food and chemical toxicology 2016-02, Vol.88, p.13-20
Main Authors: Melgar, M. Julia, Alonso, Julián, García, M. Angeles
Format: Article
Language:English
Subjects:
Agaricales - chemistry
Agaricales - metabolism
Agaricus
Bioconcentration factors
Cadmium
Cadmium - chemistry
Edible mushrooms
Environmental Monitoring
Food Analysis
Food Contamination - analysis
Fruiting Bodies, Fungal - chemistry
Fruiting Bodies, Fungal - metabolism
Health
Humans
Risk Assessment
Soil
Soil Pollutants - analysis
Soil Pollutants - metabolism
Spain
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Summary:Mushrooms do not constitute a significant portion of the human diet, but the consumption of wild and cultivated mushrooms has become increasingly in recent years. Some species accumulate high levels of toxic metals, both in unpolluted and polluted areas. In this study, we examined the accumulation capacity of cadmium in edible mushrooms in relation to certain factors and their possible toxicological implications. Cadmium concentrations were determined by an ICP-MS spectrometer in 238 samples of the fruiting bodies of 28 wild and cultivated growing edible mushrooms species and the underlying soil. The hymenophore (H) and the rest of the fruiting body (RFB) were analysed separately. The highest mean cadmium concentration (mg/kg dry weight) was found in Agaricus macrosporus (52.9 in H and 28.3 in RFB). All mushroom species accumulated cadmium in relation to the underlying soils. There were statistically significant differences between the hymenophore and the rest of the fruiting body (p 1).•The highest content was found in wild species A. macrosporus, it should not be consumed.•Hymenophore accumulated more cadmium than the rest of the fruiting body.•Highest level was found in urban area, in contrast with pastureland and forest areas.
ISSN:0278-6915
1873-6351
DOI:10.1016/j.fct.2015.12.002