Mercury in Orange Birch Bolete Leccinum versipelle and soil substratum: Bioconcentration by mushroom and probable dietary intake by consumers
- Author: mycolabadmin
- 2015-09-08
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Summary
This research examined how Orange Birch Bolete mushrooms accumulate mercury from soil in Poland. The study found these mushrooms can concentrate significant amounts of mercury from the environment, though levels were generally safe in unpolluted areas. This has important implications for mushroom foragers and consumers.
Impacts on everyday life:
– People who frequently collect and eat wild mushrooms should be aware of potential mercury exposure
– Mushroom consumption from certain areas may need to be limited to stay within safe mercury intake levels
– Environmental pollution can affect the safety of wild-foraged foods
– Wild mushrooms can serve as indicators of environmental mercury contamination
– Local knowledge of contamination levels can help guide safe foraging practices
Background
The Orange Birch Bolete (Leccinum versipelle) is a popular edible mushroom in Central and Eastern Europe and Scandinavia. Mercury is a toxic element that has become a global contaminant of food and environment due to anthropogenic emissions. Many wild-grown fungi can efficiently bioconcentrate mercury from their substrate, making it important to understand their potential as sources of mercury exposure.
Objective
This study aimed to examine the contamination, accumulation, and distribution of mercury in fruiting bodies of Leccinum versipelle collected from 19 spatially distant locations across Poland. The research also sought to estimate probable mercury intake by consumers who forage for this species.
Results
The median mercury values in mushroom caps ranged from 0.20 to 2.0 mg/kg dry biomass, with an overall median of 0.65 mg/kg across all locations. Mercury bioconcentration factors were consistently above 1, reaching up to 65 for caps at some sites, indicating strong bioconcentration potential. Mercury content correlated negatively with soil mercury levels, showing higher bioconcentration in less contaminated soils.
Conclusion
L. versipelle demonstrates good potential to accumulate mercury from soils. Specimens collected from background (unpolluted) areas in Poland showed mercury levels that could be considered safe and likely representative for the species in this part of Europe. However, consumption should be moderated as some locations showed mercury levels that could exceed recommended intake limits if consumed frequently.
- Published in:Environmental Science and Pollution Research International,
- Study Type:Environmental Monitoring Study,
- Source: 10.1007/s11356-015-5331-8