1Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
2Oeschger Centre for Climate Change Research OCCR, Bern, Switzerland
3Global Change Research Centre AS CR, Brno, Czech Republic
4Paul Scherrer Institute PSI, Villigen, Switzerland
5Deutsche Trüffelbäume, Radolfzell, Germany
6Institute of Forest Sciences IWW, Freiburg University, Freiburg,
Received: 30 Sep 2015 – Discussion started: 10 Nov 2015
Abstract. Although ranging among the most expensive gourmet foods, it remains unclear whether Burgundy truffles (Tuber aestivum) accumulate radioactivity at a harmful level comparable to other fungal species. Here, we measure the 137Cs in 82 T. aestivum fruit bodies from Switzerland, Germany, France, Italy, and Hungary. All tested specimens reveal insignificant radiocaesium concentrations, thus providing an all-clear for many truffle hunters and cultivators in large parts of Europe as well as the subsequent chain of dealers and customers from around the world. Our results are particularly relevant in the light of ongoing efforts to cultivate Burgundy truffles, as well as the fact that several forest ecosystems are still highly contaminated with 137Cs, for which mushrooms are one of the main pathways to human diets.
Revised: 22 Jan 2016 – Accepted: 03 Feb 2016 – Published: 25 Feb 2016
Büntgen, U., Jäggi, M., Stobbe, U., Tegel, W., Sproll, L., Eikenberg, J., and Egli, S.: All-clear for gourmets: truffles not radioactive, Biogeosciences, 13, 1145-1147, doi:10.5194/bg-13-1145-2016, 2016.