Simultaneous saccharification and fermentation of steam-pretreated spruce to ethanol.

Abstract:

:Ethanol production was studied in simultaneous saccharification and fermentation (SSF) of steam-pretreated spruce at 42 degrees C, using a thermotolerant yeast. Three yeast strains of Kluyveromyces marxianus were compared in test fermentations. SSF experiments were performed with the best of these on 5% (w/w) of substrate, at a cellulase loading of 37 filter paper units/g of cellulose, and a beta-glucosidase loading of 38 IU/g of cellulose. The detoxification of the substrate and the lack of pH control in the experiments increased the final ethanol concentration. The final ethanol yield was 15% lower compared to SSF with Saccharomyces cerevisiae at 37 degrees C, owing to the cessation of ethanol fermentation after the first 10 h.

authors

Bollók M,Réczey K,Zacchi G

doi

10.1385/abab:84-86:1-9:69

subject

Has Abstract

pub_date

2000-04-01 00:00:00

pages

69-80

eissn

0273-2289

issn

1559-0291

journal_volume

84-86

pub_type

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