BioChem - DOS

Bioethanol production from sodium hydroxide/hydrogen peroxide-pretreated water hyacinth via simultaneous saccharification and fermentation with a newly isolated thermotolerant Kluyveromyces marxianu strain

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

Yan, J.; Wei, Z.; Wang, Q.; He, M.; Li, S.; Irbis, C.

In this study, bioethanol production from NaOH/H<SUB>2</SUB>O<SUB>2</SUB>-pretreated water hyacinth was investigated. Pretreatment of water hyacinth with 1.5% (v/v) H<SUB>2</SUB>O<SUB>2</SUB> and 3% (w/v) NaOH at 25<SUP>o</SUP>C increased the production of reducing sugars (223.53mg/g dry) and decreased the cellulose crystallinity (12.18%), compared with 48.67mg/g dry and 22.80% in the untreated sample, respectively. The newly isolated Kluyveromyces marxianu K213 showed greater ethanol production from glucose (0.43g/g glucose) at 45<SUP>o</SUP>C than did the control Saccharomyces cerevisiae angel yeast. The maximum ethanol concentration (7.34g/L) achieved with K. marxianu K213 by simultaneous saccharification and fermentation (SSF) from pretreated water hyacinth at 42<SUP>o</SUP>C was 1.78-fold greater than that produced by angel yeast S. cerevisiae at 30<SUP>o</SUP>C. The present work demonstrates that bioethanol production achieved via SSF of NaOH/H<SUB>2</SUB>O<SUB>2</SUB>-pretreated water hyacinth with K. marxianu K213 is a promising strategy to utilize water hyacinth biomass.

2015

Elsevier Applied Science

0960-8524

193

pp.103-109

10.1016/j.biortech.2015.06.069

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART72402011

Water hyacinth; Bioethanol; NaOH/H2O2 pretreatment; Kluyveromyces marxianu; Simultaneous saccharification and fermentation