(Chief Bee)
03-14-04 22:13
No 495132
(Rated as: excellent)
Psychotropic Drugs in Developmental Mushrooms: A Case Study Review
Susan T. Gross
J Forensic Sci, Vol. 47, No. 6, pp. 1-5 (2002) (../rhodium/pdf /alkaloids.in
J Forensic Sci, Vol. 47, No. 6, pp. 1-5 (2002) (../rhodium/pdf /alkaloids.in
Abstract
Psilocyn [sic] and psilocybin can be identified in different stages of developing psilocybe mushrooms. Knowing the various stages of the mushroom development can be useful when receiving evidence from illicit mushroom growing operations. Exhibits from three separate cases were submitted to the drug analysis section of the Minnesota Bureau of Criminal Apprehension Forensic Science Laboratory. Each case contained different stages of developing mushrooms. This report describes the evidence in each case, the sample preparation, the sample analysis and the final report that was written.
The Hive - Clandestine Chemists Without Borders
(Chief Bee)
04-08-04 19:30
No 499738
(Rated as: good read)
Forensic analysis of hallucinogenic fungi: a DNA-based approach
Kimberly G. Nugent and Barry J. Saville
Forensic Science International 140(2-3), 147-157 (2004) (../rhodium/pdf /forensic/for
DOI:10.1016/j.forsciint.2003.11.022
Abstract
Hallucinogenic fungi synthesize two controlled substances, psilocin and psilocybin. Possession of the fungal species that contain these compounds is a criminal offence in North America. Some related species that are morphologically similar, do not contain the controlled substances. Therefore, unambiguous identification of fungi to the species level is critical in determining if a mushroom is illegal. We investigate a phylogenetic approach for the identification of species that contain the psychoactive compounds. We analyzed 35 North American specimens representing seven different genera of hallucinogenic and non-hallucinogenic mushrooms. We amplified and sequenced the internal transcribed spacer region of the rDNA (ITS-1) and a 5' portion of the nuclear large ribosomal subunit of rRNA (nLSU rRNA or 28S). ITS-1 locus sequence data was highly variable and produced a phylogenetic resolution that was not consistent with morphological identifications. In contrast, the nLSU rRNA data clustered isolates from the same species and separated hallucinogen containing and non-hallucinogen containing isolates into distinct clades. With this information, we propose an approach that combines the specificity of PCR detection and the resolving power of phylogenetic analysis to efficiently and unambiguously identify hallucinogenic fungal specimens for legal purposes.
The Hive - Clandestine Chemists Without Borders