Data/hora: 24/06/2024 23:54:43

Biblioteca(s): 	Embrapa Amazônia Ocidental.	
Data corrente: 	17/11/2010	
Data da última atualização: 	10/04/2021	
Autoria: 	PINTO, A. C. da S.; CHAVES, F. C. M.; SANTOS, P. A. dos; NUNEZ, C. V.; TADEI, W. P.; POHLIT, A. M.	
Afiliação: 	FRANCISCO CELIO MAIA CHAVES, CPAA.	
Título: 	Piper peltatum: biomass and 4-nerolidylcatechol production.	
Ano de publicação: 	2010	
Fonte/Imprenta: 	Planta Medica, New York, v. 76, n. 13, p. 1473-1475, 2010.	
DOI: 	http://dx.doi.org/10.1055/s-0029-1240938	
Idioma: 	Inglês	
Conteúdo: 	Piper peltatum L. is used for the treatment of inflammation, malaria, and other ailments. 4-Nerolidylcatechol (4-NC) is a valuable natural product that has important anti-inflammatory, antima-larial, and antioxidant properties. 4-NC is a component of P. peltatumand P. umbellatum extracts, which are used in cosmetics.The aim of this work was to evaluate the production of plant biomass and the production of 4-NC in roots of cultivated P. peltatumover a full life cycle. Seedlings were produced in a greenhouse and then transplanted. The weight of dry plant parts (leaves, stems, roots, and inflorescences); numbers of stems, leaves, and inflorescences; and the leaf-to-stem ratio were evaluated at intervals of 60 days after transplanting (DAT). Extracts were prepared using 1:1 ethanol-chloroform and an ultra sound bath. Roots, leaves, and inflorescences contained 4-NC according toTLC photo densitometry analysis. Quantification of 4-NC in root extracts was performed using HPLC?DAD analysis. Per-hectare production of 4-NC by roots was estimated based on quantitativ e HPLC analysis and biomass data. Optimal per-hectare yields of 4-NC were obtained by harvesting roots between 350 and 400 DAT. In this period, the average yield was 27 kg 4-NC per hectare. Importantly, at the time of maximal overall production of root biomass (470 DAT), there was a decrease in the production of 4-NC(23.8 kg/ha), probably due to the on set of senescence.	
Thesagro: 	Pimenta.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Amazônia Ocidental (CPAA)	
Exemplares: 	CPAA - (23036-1) - UPC - AP - PP - S8729 -  - S8729 - DIS