Secondary metabolites from Eucalyptus grandis wood cultivated in Portugal, Brazil and South Africa
authors Santos, SAO; Vilela, C; Domingues, RMA; Oliveira, CSD; Villaverde, JJ; Freire, CSR; Neto, CP; Silvestre, AJD
nationality International
journal INDUSTRIAL CROPS AND PRODUCTS
author keywords Eucalyptus grandis; Wood; Lipophilic compounds; Phenolic compounds; Antioxidant activity; Geographic variability
keywords PHLOROGLUCINOL-MONOTERPENE ADDUCTS; VALUE TRITERPENIC COMPOUNDS; MASS-SPECTROMETRY; LIPOPHILIC EXTRACTIVES; ANTIOXIDANT ACTIVITY; PHENOLIC-COMPOUNDS; OUTER BARKS; GLOBULUS; CORK; IDENTIFICATION
abstract The composition of the lipophilic and phenolic fractions of the wood of Eucalyptus grandis cultivated in Portugal, Brazil and South Africa, was studied. The lipophilic fraction of the studied E. grandis wood is mainly composed of sterols, fatty acids and phenolic compounds. Three triterpenic acids were detected for the first time in the wood extracts from Brazil. E. grandis wood from Portugal presents the largest lipophilic content (1.67 g kg(-1) of dry wood), followed by South Africa (1.56 g kg(-1) of dry wood) and Brazil (1.05 g kg(-1) of dry wood). 51 Phenolic compounds were identified in E. grandis wood MeOH:H2O extracts, from which 11 are reported for the first time as E. grandis constituents and 4 phenolic compounds are firstly reported as Eucalyptus genus components. E. grandis wood from Brazil shows the highest phenolic content (similar to 2.36 g kg(-1) of dry wood), followed by South Africa (similar to 1.90 g kg(-1) of dry wood) and Portugal (similar to 1.30 g kg(-1) of dry wood), demonstrating the influence of the geographic origin over E. grandis wood extractives composition and abundance, as well as on the antioxidant activities of the phenolic fractions. The detailed knowledge of these E. grandis extracts can contribute on the one hand to prevent their impact in the bleaching process, and, on the other demonstrates the potential of this species as a source of bioactive phytochemicals for nutraceutical applications. (C) 2016 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0926-6690
year published 2017
volume 95
beginning page 357
ending page 364
digital object identifier (doi) 10.1016/j.indcrop.2016.10.044
web of science category Agricultural Engineering; Agronomy
subject category Agriculture
unique article identifier WOS:000390621600041
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  impact metrics
times cited (wos core): 1
journal impact factor (jcr 2016): 3.181
5 year journal impact factor (jcr 2016): 3.577
category normalized journal impact factor percentile (jcr 2016): 85.349
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