Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi)
January 1, 2003
Takuro Maruyama, Osamu Shirota, Nobuo Kawahara et al.
14 citations
Magic mushrooms sold in Japanese markets are difficult to identify by appearance alone, especially when dried and powdered. By analyzing the internal transcribed spacer region of their ribosomal RNA gene, researchers classified the samples into six genetic groups and matched them to known species using DNA databases. Chemical analysis showed that Panaeolus cyanescens contained the highest level of psilocin among the mushrooms tested, while Amanita species contained none.
JOURNAL OF HEALTH SCIENCE
January 1, 2004
Mitsune Yamaguchi, Toshiaki Saito, Yoshie Horiguchi et al.
5 citations
A monoclonal antibody (mAb) that reacts to psilocin, a hallucinogenic compound in magic mushrooms, was developed. To create an antigen, the 4-hydroxyl group of psilocin was modified and linked to keyhole limpet hemocyanin. Mice were immunized, and their spleen cells fused with myeloma cells, producing hybridomas that secrete anti-psilocin mAbs. Four clones (BA631, CA231, KA422, MA332) were selected; BA631 and MA332 were IgG1, CA231 and KA422 were IgG2a. Enzyme immunoassay showed BA631 cross-reacts with psilocin and dimethyltryptamine but not with psilocybin, 4-hydroxyindole, tryptamine, or tryptophan. These antibodies may help identify magic mushrooms.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan
April 1, 2005
Takuro Maruyama, Nobuo Kawahara, Toshimitsu Fukiharu et al.
Since 2002, psilocybin-containing fungi have been regulated in Japan, but fly agaric-related products are now entering the Japanese market via the internet. DNA analysis of these products suggested they originate from Amanita muscaria or A. muscaria var. persicina, and they were classified into three strains based on nucleotide sequences. Chemical analysis detected harmine derivatives and/or tryptamine derivatives in some products, and the matK gene of Peganum harmala was found in all harmine-containing samples, indicating the presence of additional psychoactive plants.