3 documents found, page 1 of 1
Polysaccharide rich fractions from barks of Ximenia americana inhibit periphera...
Silva-Leite, Kaira E. S. da; Assreuya, Ana M. S.; Mendonça, Laryssa F.; Damasceno, Luis E. A.; Queiroz, Maria Goretti Rodrigues de; Mourão, Paulo A. S.tXimenia americana L., Olacaceae, barks are utilized in folk medicine as analgesic and anti-inflammatory.The objective was to evaluate the toxicity and antinociceptive effect of polysaccharides rich fractions fromX. americana barks. The fractions were obtained by extraction with NaOH, followed by precipitation withethanol and fractionation by ion exchange chromatography. They were administered i.v. or p.o. befo...
Structure and rheological properties of a xyloglucan extracted from Hymenaea co...
Arruda, Isabel R. S.; Albuquerque, Priscilla B. S.; Santos, Gustavo R. C.; Silva, Alexandre G.; Mourão, Paulo A. S.; Correia, Maria T. S.Hymenaea courbaril var courbaril seed xyloglucan was efficiently extracted with 0.1 M NaCl, followed by ethanol precipitation (yield = 72 ± 5% w/w). Its amorphous structure was identified by the pattern of X-ray diffraction. The monosaccharide composition was determined by GC/MS analysis of the alditol acetates and showed the occurrence of glucose:xylose:galactose:arabinose (40:34:20:6). One-(1D) and two-dimens...
Characterization and rheological study of the galactomannan extracted from seed...
Albuquerque, Priscilla B. S.; Barros Junior, Wilson; Santos, Gustavo R. C.; Correia, Maria T. S.; Mourão, Paulo A. S.; Teixeira, J. A.Galactomannan extracted from seeds of Cassia grandis with 0.1 M NaCl, followed by ethanol precipitation, presented a yield of 36 ± 8%. The polysaccharide has a constant mannose/galactose ratio (2.44:1). Methylation analysis, one and two dimensional NMR spectroscopy confirmed that the polysaccharide has a central core composed of 4-linked β-mannose units, with branches of galactose, linked to the carbohydrate co...