Determining the influence of eucalypt lignin composition in paper pulp yield using Py-GC/MS
2005
Río Andrade, José Carlos del | Gutiérrez Suárez, Ana | Hernando, Marina | Landín, Pedro | Romero Sánchez, Javier | Martínez, Ángel T. | Ministerio de Ciencia y Tecnología (España) | Ence Energía y Celulosa
1)Instituto de Recursos Naturales y Agrobiología de Sevilla, P.O. Box 1052, 41080-Seville, Spain; 2)ENCE-CIT, Ctra. Campañó, Ribeiro-Vao, 36157 Pontevedra, Spain; 3)Centro de Investigaciones Biológicas, Ramiro de Maeztu 9, E-28040 Madrid, Spain. E-mail address: [email protected] (J.C. del Río)
Show more [+] Less [-]A set of Eucalyptus globulus woods from different origins and growth conditions, giving a wide range of pulp yields (from 40% to 60%) upon kraft cooking, was analyzed using Py-GC/MS. The carbohydrate-derived compounds and the compounds derived from syringyl (S) and guaiacyl (G) lignin units were analyzed and the lignin/carbohydrate and S/G ratios determined. Eucalypt woods giving higher pulp yield released higher amounts of S-type compounds upon Py-GC/MS. A significant correlation was observed between pulp yield and the lignin composition in terms of the S/G ratio. By contrast, the lignin/carbohydrate ratio obtained by Py-GC/MS, did not show a significant correlation with the pulp yield. This indicates that the lignin composition is a more important parameter influencing pulp yield than the lignin content.
Show more [+] Less [-]This study has been supported by Grupo Empresarial ENCE S.A. and the Spanish Ministerio de Ciencia y Tecnología (MCyT) (project AGL2002-00393). A.G. acknowledges a "Ramón y Cajal" contract of the Spanish MCyT.
Show more [+] Less [-]Peer reviewed
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