Eucalyptus globulus biomass residues from pulping industry as a source of high value triterpenic compounds
authors Domingues, RMA; Sousa, GDA; Freire, CSR; Silvestre, AJD; Neto, CP
nationality International
journal INDUSTRIAL CROPS AND PRODUCTS
author keywords Biorefinery; Eucalyptus globulus; Bark; Pulping by-products; Triterpenic acids; Ursolic acid; Oleanolic acid; Betulinic acid
keywords BIOACTIVE PHENOLIC SUBSTANCES; MASS-SPECTROMETRY; LIPOPHILIC EXTRACTIVES; CHEMICAL-COMPOSITION; GAS-CHROMATOGRAPHY; EPICUTICULAR WAX; BARK; WOOD; STEMWOOD; KNOTS
abstract The chemical composition of the lipophilic extracts of Eucalyptus globulus harvesting residues and bark generated by the pulp industry was studied by gas chromatography-mass spectrometry. Triterpenoids, mainly triterpenic acids with lupane, ursane and oleanane skeletons (namely, betulonic, betulinic, ursolic, oleanolic, 3-acetylursolic and 3-acetyloleanolic acids) were the major components detected. Triterpenoids contents range from 1.2 g/kg to 121.1 g/kg in fruits and surface layers of branches bark residues, respectively, being the triterpenic acids highly concentrated in surface layers of E. globulus biomass. The results demonstrate that these biomass residues can be considered as promising sources of valuable bioactive chemicals, opening new strategies to up-grade the pulp industry residues, within an integrated biorefinery context. The exploitation viability of the bark from an industrial pulp mill debarking process was evaluated. The recovery of triterpenoids from bark samples collected along the industrial debarking line decreases substantially, showing that a successful exploitation process of these valuable compounds in an integrated way will require the development of modifications on the debarking systems. (C) 2009 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0926-6690
year published 2010
volume 31
issue 1
beginning page 65
ending page 70
digital object identifier (doi) 10.1016/j.indcrop.2009.09.002
web of science category Agricultural Engineering; Agronomy
subject category Agriculture
unique article identifier WOS:000273172800010
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journal impact factor 4.244
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