2008/08/16 by Mehmet Sefik Tunc, Adriaan R. P. van Heiningen · 1 citation
Engineering · Materials Science · #Lignin and Wood Chemistry #Biofuel production and bioconversion #Advanced Cellulose Research Studies
paper · doi:10.1021/ie8007105
openalex publication_date 2008/08/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/15
Hemicelluloses derived from biomass are presently underutilized. In order to develop more profitable biorefinery processes, the mechanism responsible for hemicellulose removal by pretreatments has to be further explored. The hydrothermal dissolution profile of the wood components cellulose, hemicelluloses, and lignin of a hardwood mixture during autohydrolysis in a modified Dionex ASE-100 is described. Well-closed material balances were obtained for lignin-free yield, xylan, and glucomannan when comparing the solid and liquid phases. Xylo-oligomers were the predominant component in the extract. Xylan initially dissolved as oligosaccharides and then slowly depolymerized into monomeric xylose. The residual xylan in wood was only slightly deacetylated. A smaller amount of glucomannan was removed as oligosaccharides. Arabinose and galactose were completely removed from wood as monomers at the end of the extraction process. Initially all acetyl groups were removed while still bound to oligosaccharides. Then, acetic acid was released by deacetylation of the dissolved oligosaccharides.