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Título: Extracts from the leaves of Piper piscatorum (Trel. Yunc.) obtained by supercritical extraction of with CO 2 , employing ethanol and methanol as co-solvents
Autor(es): Pimentel, Flávio A.
Cardoso, Maria das G.
Guimarães, Luiz G.L.
Queiroz, Fabiana
Barbosa, Luiz C.A.
Morais, Augusto R.
Nelson, David L.
Andrade, Milene A.
Zacaroni, Lidiany M.
Pimentel, Sônia Maria N.P.
Assunto: Piper piscatorum
Natural anesthetic
Supercritical extraction
Publicador: Elsevier
Data de publicação: 31-Jul-2012
Referência: PIMENTEL, F. A. et al. Extracts from the leaves of Piper piscatorum (Trel. Yunc.) obtained by supercritical extraction of with CO2, employing ethanol and methanol as co-solvents. Industrial Crops and Products, [S.l.], v. 43, p. 490-495, Jul. 2013.
Abstract: The efficiency of the extraction of fresh and dried leaves of Piper piscatorum was evaluated employing supercritical CO 2 and co-solvents (10% ethanol and 10% methanol) at 40 ◦ C and 70 ◦ C and a pressure of 400 bar. The extracts were characterized chemically by GC–MS and GC–FID. The major components of the extracts were piperovatine, followed by palmitic acid, pentadecane and pipercallosidine. Dry- ing of the leaves caused modifications in their composition, mainly reducing the concentration of the amides, which have activity as anesthetics. The highest yields of the piperovatine (0.93%, w/w) and pipercallosidine (0.24%, w/w) were obtained from the fresh leaves extracted with CO 2 modified with 10% ethanol at 40 ◦ C.
URI: http://www.sciencedirect.com/science/journal/09266690/43
http://repositorio.ufla.br/jspui/handle/1/5135
Idioma: en
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