Adamara M Nascimento, Lauro M de Souza, Cristiane H Baggio, Maria Fernanda de P Werner, Daniele Maria-Ferreira, Luisa M da Silva, Guilherme L Sassaki, Philip A J Gorin, Marcello Iacomini, Thales R Cipriani
The plant Acmella oleracea (L.) R.K.Jansen (Asteraceae), locally known as jambu, is widely used in Legal Amazon in local dishes and in folk medicine. A polysaccharide (SC) was isolated from this plant, following aqueous extraction, which contained uronic acid, galactose, arabinose, rhamnose, and glucose in a 15:2:1:1:0.5 molar ratio and had a M(w) 226,000 g/mol. Methylation analysis and NMR spectroscopy indicated that SC is a rhamnogalacturonan composed of a long chain of →4)-6-OMe-α-D-GalpA-(1→, interspersed with some α-L-Rhap residues, partly substituted by side-chains of type II arabinogalactans...
January 2013: Phytochemistry