Effects of Eucalyptus globulus wood autohydrolysis conditions on the reaction products.
Eucalyptus globulus wood samples were reacted in aqueous media (hydrothermal treatments) at 160 degrees C for 30-66 min. Liquors from the several experiments were analyzed by spectrophotometry, high-performance liquid chromatography, or gas chromatography-mass spectrometry for monosaccharides, oligosaccharides, oligosaccharide substituents (arabinose moieties, uronic acids, and acetyl groups), acetic acid, furfural, hydroxymethylfurfural, and dichloromethane-soluble compounds. Individual components of this latter fraction were identified and quantified. The molecular weight distribution of oligosaccharides was studied by high-performance size exclusion chromatography. The kinetics of xylan conversion into high-, medium-, and low-molecular-weight products was assessed in terms of the severity factor and by pseudohomogeneous kinetic models.
Garrote
Gil
G
Department of Chemical Engineering, University of Vigo (Campus Ourense), Polytechnical Building, As Lagoas, 32004 Ourense, Spain. gil@uvigo.es
Kabel
Mirjam A
MA
Schols
Henk A
HA
Falqué
Elena
E
Domínguez
Herminia
H
Parajó
Juan Carlos
JC
D005052:Eucalyptus / Q000737:chemistry*; D006358:Hot Temperature; D006868:Hydrolysis; D007700:Kinetics; D009844:Oligosaccharides / Q000032:analysis / Q000378:metabolism; D014867:Water; D014934:Wood / Q000737:chemistry* / Q000378:metabolism; D014990:Xylans / Q000378:metabolism
D009844:Oligosaccharides; D014990:Xylans; D014867:Water