VARIATION IN THE COMPOSITION OF WOOD EXTRACTIVES FROM Eucalyptus globulus DURING SEASONING
نویسندگان
چکیده
The variation in the content of extractives from Eucalyptus globulus wood has been studied during a three-month seasoning experiment. The decrease in the total acetone extract (by over 56%) after seasoning is well correlated to a parallel reduction on the colloidal pitch measured in black liquors. The composition of lipophilic extractives during the seasoning period has been studied by gas chromatography and gas chromatography-mass spectrometry. Sterols, sterol esters, triglycerides, fatty acids and steroid ketones were the main lipophilic compounds among E. globulus wood extractives. Significative variations in the content of these compounds were observed during seasoning.
منابع مشابه
Comparative Study of Lipophilic Extractives of Hardwoods and Corresponding Ecf Bleached Kraft Pulps
The lipophilic extractives of Eucalyptus globulus, Eucalyptus grandis, Eucalyptus urograndis, Betula verrucosa and Acacia mangium woods and of the corresponding ECF bleached kraft pulps, were characterized by GC-MS. The five hardwoods showed significant differences in the content and composition of the main families of extractives, namely fatty acids, long chain aliphatic alcohols and sterols. ...
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