Fecha/hora: 06/06/2024 21:29:36

Biblioteca(s): | INIA Tacuarembó.
Fecha corriente: | 21/02/2014
Fecha de la última actualización: | 24/09/2019
Autoria: | GALETTA, M.A.; REINA, L.; RESQUÍN, F.; MANTERO, C.; GONZÁLEZ-PÉREZ, J.A.; ALMENDROS, G.; MENÉNDEZ, M.P.; GONZÁLEZ-VILADA, F.J.
Afiliación: | Universidad de la República (UdelaR)/ Facultad de Química.; Universidad de la República (UdelaR)/ Facultad de Química.; JOSE FERNANDO RESQUIN PEREZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Universidad de la República (UdelaR)/ Facultad de Agronomía.; Instituto de Recursos Naturales y Agrobiología de Sevilla, IRNAS-CSIC, Seville, Spaine.; SpaineMNCN-CSIC, Madrid, Spain.; Universidad de la República (UdelaR)/ Facultad de Química.; Instituto de Recursos Naturales y Agrobiología de Sevilla, IRNAS-CSIC, Seville, Spain.
Título: | Chemometric appraisal of lignin pyrolytic assemblages from Eucalyptus woods relevant for pulping in Uruguay.
Año de publicación: | 2014
Fuente/Imprenta: | Journal of Analytical and Applied Pyrolysis, 2014, v. 109, p. 296-303.
DOI: | 10.1016/j.jaap.2014.08.001
Idioma: | Inglés
Notas: | Article history: Received 5 January 2014 // Accepted 2 August 2014 // Available online 13 August 2014.
Contenido: | Analytical pyrolysis (Py-GC/MS) at 500°C was applied to study wood composition of Eucalyptus species(Eucalyptus grandis, Eucalyptus dunnii and Eucalyptus benthamii) which are relevant for pulping inUruguay. Multivariate data treatments mainly principal component analysis and discriminant analy-sis were used to explore differences between the original wood cultivars. Multivariate analyses withautomatic backwards variable selection indicated that simplified methoxyphenol patterns (up to 10compounds) are sufficient for wood discrimination in terms of species and geographical origin butalso with purposes of forecasting the ease of delignification of the resulting pulps measured as activealkali. No additional chemotaxonomical accuracy was achieved when the data sets were enlarged withcarbohydrate-derived products. On the other side, discriminant or forecasting models (partial leastsquares and multiple linear regression) were much less significant when based on individual diag-nostic compounds, groups of compounds, or the classical syringyl-to-guaiacyl (S/G) ratio. Principalcomponent analysis indicated that the variability in lignin composition due to bioclimatic variations(spatial replications) was more significant than that due to phylogenetic differences (species andcultivars).
Palabras-Clave: | ANALYTICAL PYROLYSIS; DISCRIMINANT ANALYSIS; FORESTACIÓN; LIGNIN METHOXYPHENOLS; MULTIPLE REGRESSION MODELS; PARTIAL LEAST SQUARES REGRESSION; PRINCIPAL COMPONENT ANALYSIS.
Categoría del tema: | K10 Producción forestal
Registro original: | INIA Tacuarembó (TBO)
Ejemplares: | TBO - (17467-1) - PXI - AP - DD -  -  -  - DIS