title: Identification of delta7 phytosterols and phytosteryl glucosides in the wood and bark of several Acacia species.
abstract: The wood and bark of four Acacia species growing in Portugal, namely, A. longifolia, A. dealbata, A. melanoxylon, and A. retinodes, were investigated for their sterol content. The lipids fractions of the different wood and bark samples were isolated, and the sterols were identified and quantified by GC-MS. Two delta7 sterols, specifically, spinasterol and dihydrospinasterol, were the main sterols found in considerable amounts, particularly in wood tissues (more than 0.5 g/kg of dry wood in the case of A. melanoxylon and A. retinodes). The corresponding unusual steryl glucosides were also identified in significant amounts in the wood and bark extracts.
authors.affiliation: Center for Research in Ceramics and Composite Materials (CICECO), Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Carmen S R
authors.initials: CS
authors.lastname: Freire
authors.forename: Dora S C
authors.initials: DS
authors.lastname: Coelho
authors.forename: Nuno M
authors.initials: NM
authors.lastname: Santos
authors.forename: Armando J D
authors.initials: AJ
authors.lastname: Silvestre
authors.forename: Carlos
authors.initials: C
authors.lastname: Pascoal Neto
mesh_terms: D000045:Acacia / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D005960:Glucosides / Q000032:analysis*; D010840:Phytosterols / Q000032:analysis*; D018547:Plant Stems / Q000737:chemistry*; D011174:Portugal; D012855:Sitosterols / Q000032:analysis; D013265:Stigmasterol / Q000031:analogs & derivatives / Q000032:analysis; D014934:Wood
chemical_list: D005960:Glucosides; D010840:Phytosterols; D012855:Sitosterols; C031312:spinasterol; C025473:gamma-sitosterol; D013265:Stigmasterol