New lipophilic components of pitch deposits from an Eucalyptus globulus ECF bleached kraft pulp mill
authors Freire, CSR; Silvestre, AJD; Pereira, CCL; Neto, CP; Cavaleiro, JAS
nationality International
journal JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY
author keywords Eucalyptus globulus; Chlorine dioxide; kraft pulp bleaching; pitch; oxidized sterols; alpha-hydroxyfatty acids; omega-hydroxyfatty acids
keywords CHEMICAL-COMPOSITION; EXTRACTIVES; WOOD
abstract The chemical composition of three pitch samples coming from an Eucalyptus globulus ECF bleached kraft pulp mill was studied by GC-MS. All samples are rich in fatty acids, including several omega- and alpha-hydroxyfatty acids and several oxidation products of beta-sitosterol, such as 5,6-epoxy-24-ethylcholestane-3-ol and 24-ethylcholestane-3,5,6-triol. One oxidation product of oleic acid, namely 9,10-dihydroxyoctadecanoic acid was also identified. The alpha-hydroxyfatty acids, the sterols oxidation products and 9,10-dihydroxyoctadecanoic acid are reported here for the first time as components of pitch issued from ECF bleached kraft pulp mills.
publisher MARCEL DEKKER INC
issn 0277-3813
year published 2002
volume 22
issue 1
beginning page 55
ending page 66
digital object identifier (doi) 10.1081/WCT-120004434
web of science category Materials Science, Paper & Wood
subject category Materials Science
unique article identifier WOS:000176343100005
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journal impact factor 1.899
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