Abstract：
:Co-fermentation and simultaneous saccharification of rice hull hydrolysate (RHH) were investigated for the production of ethanol and xylitol by Saccharomyces cerevisiae, Spathaspora arborariae, or the combination of both. In bioreactor cultures under oxygen limitation, S. cerevisiae was capable of metabolizing glucose from RHH, which contained small amounts of acetic acid, furfural, and hydroxymethylfurfural, achieving ethanol yields of 0.45 and concentrations of 10.5 g L(-1). In the co-culture of S. cerevisiae and S. arborariae pentoses and hexoses from RHH, were converted to ethanol and xylitol, with yields of 0.48 and 0.39, and concentrations of 11 g L(-1) and 3 g L(-1), respectively. The simultaneous saccharification and co-fermentation using both yeasts produced ethanol and xylitol to final concentrations of 14.5 g L(-1) and 3 g L(-1), respectively. Results showed good prospects to use co-cultures of S. cerevisiae and S. arborariae for the bioconversion of RHH into ethanol and xylitol without further detoxification.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Hickert LR,de Souza-Cruz PB,Rosa CA,Ayub MAdoi
10.1016/j.biortech.2013.05.123keywords:
["Bioethanol","Rice hull hydrolysate","Saccharomyces cerevisiae","Simultaneous saccharification and co-fermentation","Spathaspora arborariae"]subject
Has Abstractpub_date
2013-09-01 00:00:00pages
112-6eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00913-9journal_volume
143pub_type
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