Abstract:
:In this study, five recombinant Saccharomyces cerevisiae strains were compared for their xylose-fermenting ability. The most efficient xylose-to-ethanol fermentation was found by using the industrial strain MA-R4, in which the genes for xylose reductase and xylitol dehydrogenase from Pichia stipitis along with an endogenous xylulokinase gene were expressed by chromosomal integration of the flocculent yeast strain IR-2. The MA-R4 strain rapidly converted xylose to ethanol with a low xylitol yield. Furthermore, the MA-R4 strain had the highest ethanol production when fermenting not only a mixture of glucose and xylose, but also mixed sugars in the detoxified hydrolysate of wood chips. These results collectively suggest that MA-R4 may be a suitable recombinant strain for further study into large-scale ethanol production from mixed sugars present in lignocellulosic hydrolysates.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Matsushika A,Inoue H,Murakami K,Takimura O,Sawayama Sdoi
10.1016/j.biortech.2008.11.047subject
Has Abstractpub_date
2009-04-01 00:00:00pages
2392-8issue
8eissn
0960-8524issn
1873-2976pii
S0960-8524(08)01025-0journal_volume
100pub_type
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