| Título: | PURIFICATION OF HARDWOOD-DERIVED AUTOHYDROLYSATES |
| Autores: |
Lehto, Joni Tapani Alén, Raimo Juhani |
| Fecha: | 2012-02-01 |
| Publicador: | Bioresources |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| Tema: | Autohydrolysis; Hydrolysate; Purification; Biorefining; Biomass; XAD-4; Ethyl acetate |
| Descripción: | 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. |
| Idioma: | Inglés |