Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/198623
Type: Artigo de periódico
Title: Liquid-liquid Extraction Of Fermentation Inhibiting Compounds In Lignocellulose Hydrolysate.
Author: Zautsen, R R M
Maugeri-Filho, F
Vaz-Rossell, C E
Straathof, A J J
van der Wielen, L A M
de Bont, J A M
Abstract: Several compounds that are formed or released during hydrolysis of lignocellulosic biomass inhibit the fermentation of the hydrolysate. The use of a liquid extractive agent is suggested as a method for removal of these fermentation inhibitors. The method can be applied before or during the fermentation. For a series of alkanes and alcohols, partition coefficients were measured at low concentrations of the inhibiting compounds furfural, hydroxymethyl furfural, vanillin, syringaldehyde, coniferyl aldehyde, acetic acid, as well as for ethanol as the fermentation product. Carbon dioxide production was measured during fermentation in the presence of each organic solvent to indicate its biocompatibility. The feasibility of extractive fermentation of hydrolysate was investigated by ethanolic glucose fermentation in synthetic medium containing several concentrations of furfural and vanillin and in the presence of decanol, oleyl alcohol and oleic acid. Volumetric ethanol productivity with 6 g/L vanillin in the medium increased twofold with 30% volume oleyl alcohol. Decanol showed interesting extractive properties for most fermentation inhibiting compounds, but it is not suitable for in situ application due to its poor biocompatibility.
Subject: Carbon Dioxide
Culture Media
Enzyme Inhibitors
Ethanol
Fermentation
Hydrolysis
Lignin
Solvents
Rights: fechado
Identifier DOI: 10.1002/bit.22189
Address: http://www.ncbi.nlm.nih.gov/pubmed/19062184
Date Issue: 2009
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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