BioChem - DOS

Different laccase detoxification strategies for ethanol production from lignocellulosic biomass by the thermotolerant yeast Kluyveromyces marxianus CECT 10875

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Moreno, A.D.; Ibarra, D.; Fernandez, J.L.; Ballesteros, M.

In this work, laccase enzymes were evaluated to detoxify the whole slurry from steam-exploded wheat straw. For it, two different strategies, laccase treatment before or after enzymatic hydrolysis, were employed. The detoxification efficiency was analyzed on enzymatic hydrolysis and fermentation levels by the thermotolerant yeast Kluyveromyces marxianus. Laccases reduced phenolic compounds without affecting weak acids and furan derivates. A lower glucose recovery was observed when laccase treatments were carried out before enzymatic hydrolysis, phenomenon that was not showed after enzymatic hydrolysis. In contrast, both laccase treatment strategies enhanced ethanol concentrations, reducing significantly the lag phase of the yeast and allowing substrate loading increments of saccharification and fermentation broths.

2012

Elsevier Applied Science

0960-8524

106

pp.101-109

10.1016/j.biortech.2011.11.108

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART58260561

Ethanol; Kluyveromyces marxianus; Laccase detoxification; Lignocellulose; Steam explosion