Article ID Journal Published Year Pages File Type
7078790 Bioresource Technology 2014 9 Pages PDF
Abstract
Gracilaria sp., a red alga, was used as a feedstock for the production of bioethanol. Saccharification of Gracilaria sp. by sequential acid and enzyme hydrolysis in situ produced a high quality hydrolysate that ensured its fermentability to produce ethanol. The optimal saccharification process resulted in total 11.85 g/L (59.26%) of glucose and galactose, Saccharomyces cerevisiae Wu-Y2 showed a good performance on co-fermentability of glucose and galactose released in the hydrolysate from Gracilaria sp. The final ethanol concentrations of 4.72 g/L (0.48 g/g sugar consumed; 94% conversion efficiency) and the ethanol productivity 4.93 g/L/d were achieved. 1 g of dry Gracilaria can be converted to 0.236 g (23.6%) of bioethanol via the processes developed. Efficient alcohol production by immobilized S. cerevisiae Wu-Y2 in batch and repeated batch fermentation was also demonstrated. The findings of this study revealed that Gracilaria sp. can be a potential feedstock in biorefinery for ethanol production.
Related Topics
Physical Sciences and Engineering Chemical Engineering Process Chemistry and Technology
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