Barbasco Guineano

	Barbasco Guineano Barbasco is the name of several plants that contain poisonous chemical compounds that have been used for fishing by indigenous populations of the Americas: * ''Lonchocarpus urucu'', used by Shuar and Nukak peoples as a poison for fishing. * ''Deguelia utilis'', used in Brazil and Peru as a poison for fishing. * ''Jacquinia barbasco'', an evergreen. * One of several inedible wild Mexican yam (''Dioscorea mexicana'' and ''Dioscorea composita'') from which progesterone Progesterone (P4) is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. It belongs to a group of steroid hormones called the progestogens and is the m ... can be synthesized. {{Plant common name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lonchocarpus Urucu ''Lonchocarpus urucu'', or barbasco, is plant in the family Fabaceae. It is native to the tropical forests of Peru, as well as of Brazil and Guyana, growing from above sea level. It was also recorded in Venezuela. Cubé resin, the root extract from Barbasco and from cubé (''Lonchocarpus utilis''), is used as a commercial insecticide and piscicide (fish poison). The major active ingredients are rotenone and deguelin. Although "organic" (produced by nature), rotenone is no longer considered an environmentally safe chemical. Taxonomic status The taxonomic status as a species with the name Lonchocarpus urucu ist still to be resolved, as it is also considered a variety of Deguelia rufescens: ''Deguelia rufescens var. urucu'' (Killip & A.C.Sm.) A.M.G.Azeved. Toxicity Barbasco is toxic to insects, fish, and other pests. The primary threat to humans and other mammals comes from inhaling the powdered root or root extract. It has been used by the Shuar people of Ecuador and the Nukak p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Deguelia Utilis ''Deguelia utilis'', syn. ''Lonchocarpus utilis'' (cubé, (common) lancepod or barbasco) is plant species in the family Fabaceae. It is native to the tropical forests of Peru, as well as of Brazil and Guyana, growing from above sea level. Cubé resin, the root extract from cubé and from barbasco ('' Lonchocarpus urucu''), is used as a commercial insecticide and piscicide (fish poison). The major active ingredients are rotenone and deguelin. Although "organic" (produced by nature) rotenone is no longer considered an environmentally safe chemical. Miscellaneous Cubé is toxic to insects, fish, and other pets. The primary threat to humans and other mammals comes from inhaling the powdered root or root extract. See also * Lonchocarpus ''Lonchocarpus'' is a plant genus in the legume family (biology), family (Fabaceae). The species are called lancepods due to their fruit resembling an ornate lance tip or a few beads on a string. ''Cubé'' resin is produced from the roots of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Jacquinia Barbasco ''Jacquinia'' is a genus of evergreen shrubs and trees in the family Primulaceae, native to Central America and the Caribbean. The genus was established by Linnaeus in 1760 and named by him in honor of Nikolaus Joseph von Jacquin Nikolaus Joseph Freiherr von Jacquin (16 February 172726 October 1817) was a scientist who studied medicine, chemistry and botany. Biography Born in Leiden in the Netherlands, he studied medicine at Leiden University, then moved first to P .... Species There are about 86 speciesIPNI External links {{Taxonbar, from=Q309936 Primulaceae Primulaceae genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Dioscorea Mexicana ''Dioscorea mexicana'', Mexican yam or ''cabeza de negro'' is a species of yam in the genus ''Dioscorea''. ''Dioscorea mexicana'' is a caudiciform dioscorea having either a partly to completely above-ground dome-shaped caudex with a thick, woody outer layer up to 3 feet (90 cm) in diameter and 8–10 inches (20 to 25 cm) in height. The caudex of ''D. mexicana'' is divided into regular polygonal plates that become protuberant with age, and separated by deep fissures. The vigorous annual vines which may reach 30 feet (9 m) long before dying back in winter, that grow up from the caudex, bear heart-shaped leaves. ''Dioscorea mexicana'' ranges from the state of San Luis Potosí in northeastern Mexico south to Panama. It is notable for its production of diosgenin, which is a precursor for the synthesis of hormones such as progesterone. Russell Marker developed the extraction and manufacture of hormones from ''D. mexicana'' at Syntex. Later the Mexican barbasco trade fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Dioscorea Composita ''Dioscorea composita'', or barbasco, is a species of yam in the genus '' Dioscorea'', native to Mexico. It is notable for its role in the production of diosgenin, which is a precursor for the synthesis of hormones such as progesterone. Russell Marker developed the extraction and manufacture of hormones from ''D. mexicana'' at Syntex, starting the trade of ''D. composita'' in Mexico. Marker also discovered that the ''composita'' variety had a much higher content of diosgenin than the ''mexicana'' variety, and therefore it came to replace the latter in the production of synthetic hormones. Chemical constituents Steroidal sapogenin, diosgenin. Medicinal use It is a source of diosgenin, which is used to prepare synthetic hormones such as progesterone and cortisone. Diosgenin extracted from ''Dioscorea composita'' was instrumental in the development of the combined oral contraceptive pill in the 1960s – and also for the development of cortisone treatments of arthritis. St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]