[DNA and chemical analyses of commercial fly agaric-related products].
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.