6533b82ffe1ef96bd12950a7
RESEARCH PRODUCT
PURIFICATION OF HARDWOOD-DERIVED AUTOHYDROLYSATES
Raimo AlénJoni Lehtosubject
Environmental EngineeringChromatographylcsh:BiotechnologyExtraction (chemistry)Ethyl acetateEthyl acetateBioengineeringFurfuralHydrolysatechemistry.chemical_compoundchemistryAutohydrolysisBiorefininglcsh:TP248.13-248.65HardwoodLigninOrganic chemistryDry matterHydroxymethylBiorefiningBiomassWaste Management and DisposalXAD-4Purificationdescription
Carbohydrate-containing hydrolysates (1.1 to 14.9% of wood dry matter) obtained from autohydrolysis (at 130 to 150°C for 30 to 120 minutes) of birch (Betula pendula) chips prior to pulping were purified with respect to non-carbohydrate materials, without carbohydrate losses, either by ethyl acetate extraction or XAD-4 resin treatment. In the former case, about 50% of lignin and practically all the furanoic compounds (2-furaldehyde and 5-(hydroxymethyl)furfural) could be removed, whereas in the latter case, the corresponding amounts were about 30% and 50 to 90%, respectively. A partial recovery of various unsaturated impurities is of importance, because they may act as inhibitors when biochemically converting carbohydrates in hydrolysates into value-added products.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-02-28 | BioResources |