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Monday, 7 December 2015

90Sr in King Bolete Boletus edulis and certain other mushrooms consumed in Europe and China.

Sci Total Environ. 2015 Nov 16;543(Pt A):287-294. doi: 10.1016/j.scitotenv.2015.11.042. [Epub ahead of print]


Author information

  • 1Institute of Meteorology and Water Management, National Research Institute, Maritime Branch, 42 Waszyngtona Av., PL 81-342 Gdynia, Poland.
  • 2Laboratory of Environmental Chemistry & Ecotoxicology, Gdańsk University, 63 Wita Stwosza Str., PL 80-308 Gdańsk, Poland.
  • 3Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Panlong District, 650200 Kunming, China.
  • 4Laboratory of Environmental Chemistry & Ecotoxicology, Gdańsk University, 63 Wita Stwosza Str., PL 80-308 Gdańsk, Poland. Electronic address: jerzy.falandysz@ug.edu.pl.

Abstract

The 90Sr activity concentrations released from a radioactive fallout have been determined in a range of samples of mushrooms collected in Poland, Belarus, China, and Sweden in 1996-2013. Measurement of 90Sr in pooled samples of mushrooms was carried out with radiochemical procedure aimed to pre-isolate the analyte from the fungal materials before it was determined using the Low-Level Beta Counter. Interestingly, the Purple Bolete Imperator rhodopurpureus collected from Yunnan in south-western China in 2012 showed 90Sr activity concentration at around 10Bqkg-1 dry biomass, which was greater when compared to other mushrooms in this study. The King Bolete Boletus edulis from China showed the 90Sr activity in caps at around 1.5Bqkg-1 dry biomass (whole fruiting bodies) in 2012 and for specimens from Poland activity was well lower than 1.0Bqkg-1 dry biomass in 1998-2010. A sample of Sarcodonimbricatus collected in 1998 from the north-eastern region of Poland impacted by Chernobyl fallout showed 90Sr in caps at around 5Bqkg-1 dry biomass. Concentration of 90Sr in Bay Bolete Royoporus (Xerocomus or Boletus) badius from affected region of Gomel in Belarus was in 2010 at 2.1Bqkg-1 dry biomass. In several other species from Poland 90Sr was at <0.5 to around 1.0Bqkg-1 dry biomass. Activity concentrations of 90Sr in popular B. edulis and some other mushrooms collected from wild in Poland were very low (<1Bqkg-1 dry biomass), and values noted showed on persistence of this type of radioactivity in mushrooms over time passing from nuclear weapons tests and the Chernobyl nuclear power plant catastrophe.
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KEYWORDS:

Mushrooms; Organic food; Radioactivity; Wild foods