Abstract
Eucalyptus globulus wood samples were reacted in aqueous media (hydrothermal treatments) at 160 °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.
Keywords: Autohydrolysis; Eucalyptus globulus; product distribution; xylo-oligosaccharides
| Original language | English |
|---|---|
| Pages (from-to) | 9006-9013 |
| Journal | Journal of Agricultural and Food Chemistry |
| Volume | 55 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 2007 |
Keywords
- lipophilic extractives
- chemical-composition
- kinetic assessment
- wheat-straw
- by-products
- oligosaccharides
- fractionation
- liquors
- water
- lignocellulosics