The content of tryptamine derivatives in Psilocybe semilanceata, a popular hallucinogenic mushroom, was measured by high-performance liquid chromatography. Most of the 52 samples have been collected at several localities in Switzerland during a 1-5 year period. The content of psilocybin and baeocystin varied in the range of 0.21-2.02% and 0.05-0.77%, respectively, whereas only traces of...
The vanadium content of different mushrooms of the genus Amanita was measured by atomic absorption spectroscopy. Amanita regalis and Amanita velatipes showed high levels of vanadium comparable with the level present in the fly agaric Amanita muscaria. Electron paramagnetic resonance and high pressure liquid chromatography showed that in these three species amavadin, a vanadium(IV)complex with...