José Rodrigues, Jürgen Puls, Oskar Faix, Helena Pereira
Determination of Monosaccharide Composition of Eucalyptus globulus Wood by FTIR Spectroscopy
Summary
FTIR spectroscopy was used to estimate monosaccharide content in Eucalyptus globulus wood, using
the natural variability of the species for calibration and validation of the method . A total of 38 samples
from 9 year old trees from provenance trials was used. The composition ranged for glucose from 43.2%
to 59.5%, for xylose from 9.4% to 17.8%, for galactose from 0.5% to 5.4%, for mannose from 0% to
2.8%, and for rhamnose from 0.3% to 0.8%, based on extractive-free dry wood. The multivariate analysis
gave in general, better results with increased R2, lower SEC and SEP errors, although the univariate
method also gave good fits with high coefficient of determination (R2) based on remaining data once outliers
were removed. FTIR techniques may be used in large scale breeding programmes to measure wood
monosaccharide composition with considerably less effort and in shorter time than wet-lab methods,
once a reliable calibration has been made for the species.
Holzforschung, Walter de Gruyter
Print ISSN: 0018-3830
Volume: 55, 04/2001
Pages: 265 - 269
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