Lipids from flax fibers and their fate after alkaline pulping
2003
Gutiérrez Suárez, Ana | Río Andrade, José Carlos del | Ministerio de Ciencia y Tecnología (España) | European Commission
Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, P.O. Box 1052, E- 41080 Seville, Spain
Afficher plus [+] Moins [-]The chemical composition of lipids from bast fibers of flax (Linum usitatissimum), which are commonly used for high-quality paper pulp production, was thoroughly studied by gas chromatography-mass spectrometry. The main compounds identified were waxes, series of long chain n-fatty alcohols, n-aldehydes, n-fatty acids, and n-alkanes. Free and esterified sterols and triterpenols, steroid hydrocarbons, steroid and triterpenoid ketones, as well as sterol glycosides were also found in the flax bast fibers. On the other hand, the fate of these lipophilic compounds in alkaline pulping of flax fibers was investigated by analyzing two pulps obtained under distinct industrial cooking conditions. The results revealed that while waxes could be efficiently hydrolyzed during pulping depending on the alkali charge, most of the other lipophilic compounds present in flax fibers survived cooking and were present in the unbleached pulps.
Afficher plus [+] Moins [-]This study has been supported by the Spanish Ministerio de Ciencia y Tecnología (MCYT) and FEDER funds (project AGL2002-00393).
Afficher plus [+] Moins [-]Peer reviewed
Afficher plus [+] Moins [-]Mots clés AGROVOC
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