title: [Microscopic examination of Guaraná powder--Paullinia cupana Kunth].
abstract: Guaraná is a product from the seeds of the Amazonian liana Paullinia cupana that is also cultivated since a couple of years. It is rich in caffeine and serves in Brasil for the production of stimulants, soft drinks, and sweets. In the drug scene it is sometimes trafficked as natural stimulant or drug surrogate. Microscopic examination shows the presence of starch and tannins and provides a simple, quick and cheap method to distinguish guaraná from drugs of abuse.
authors.affiliation: Institut für Rechtsmedizin, RWTH Aachen.
authors.forename: A T
authors.initials: AT
authors.lastname: Schäfer
mesh_terms: D001628:Beverages; D002110:Caffeine / Q000737:chemistry*; D000697:Central Nervous System Stimulants / Q000737:chemistry*; D004335:Drug and Narcotic Control / Q000331:legislation & jurisprudence; D006801:Humans; D013287:Illicit Drugs / Q000737:chemistry*; D008853:Microscopy; D010936:Plant Extracts / Q000737:chemistry*; D011208:Powders; D012639:Seeds
chemical_list: D000697:Central Nervous System Stimulants; D013287:Illicit Drugs; D010936:Plant Extracts; D011208:Powders; D002110:Caffeine