Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7078790 | Bioresource Technology | 2014 | 9 Pages |
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 11.85Â 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 4.72Â g/L (0.48Â g/g sugar consumed; 94% conversion efficiency) and the ethanol productivity 4.93Â g/L/d were achieved. 1Â g of dry Gracilaria can be converted to 0.236Â 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
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Authors
Fang-Chen Wu, Jane-Yii Wu, Yi-Jyun Liao, Man-Ying Wang, Ing-Lung Shih,