resumo
The chemical composition of oleo-gum-resin from Ferula gummosa collected in the northern part of Iran has been studied. The fraction of oleo-gum-resin soluble in ethanol (ca 67 wt.%) is composed by three major fractions: (i) monoterpenes and monoterpenoids (ca 15 wt.% fraction), (ii) sesquiterpenes and sesquiterpenoids (ca 30 wt.%) and (iii) triterpenes and triterpenoids (ca 55 wt.%). The major families of terpenes and terpenoids were identified employing gas chromatography coupled with mass spectrometry detector (GC-MS). Almost 25 wt.% of oleo-gum-resin was insoluble in ethanol and, according to wet chemistry analyses, assigned to arabinogalactane structurally associated with protein complex (AGP). This arabinogalactan possessed the molecular weight of ca 30 kDa, as revealed by size exclusion chromatography, and the main backbone was constituted by beta-(1 -> 3)/beta-(1 -> 3,6)-linked D-galactopyranosyl residues ramified predominantly by terminal alpha-L-arabinofuranosyl and beta-D-glucuronopyranosyl residues, as assessed by 1D/2D (1)H NMR. (C) 2010 Elsevier B.V. All rights reserved.
palavras-chave
ESSENTIAL OIL; ACETYLATED HETEROXYLAN; ANTIMICROBIAL ACTIVITY; ARABINOGALACTAN; CHROMATOGRAPHY; COMPONENTS; PERSICA; FRUITS; ACIDS; IRAN
categoria
Agriculture
autores
Jalali, HT; Ebrahimian, ZJ; Evtuguin, DV; Neto, CP
nossos autores
Carlos Pascoal Neto
Diretor do Raiz
Dmitry Evtyugin
Professor Associado com Agregaçãoagradecimentos
The Ministry of Science, Research and Technology of Iran provided a research grant to Hossein T. Jalali is greatly acknowledged. Authors also thank the Centre for Research in Ceramics and Composite Materials (CICECO) at the University of Aveiro for the financial support of this work.