Title |
Ethanol production from sweet sorghum by Saccharomyces cerevisiae DBKKUY-53 immobilized on alginate-loofah matrices
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Published in |
Brazilian Journal of Microbiology, March 2018
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DOI | 10.1016/j.bjm.2017.12.011 |
Pubmed ID | |
Authors |
Sunan Nuanpeng, Sudarat Thanonkeo, Preekamol Klanrit, Pornthap Thanonkeo |
Abstract |
Ethanol production from sweet sorghum juice (SSJ) using the thermotolerant Saccharomyces cerevisiae strain DBKKUY-53 immobilized in an alginate-loofah matrix (ALM) was successfully developed. As found in this study, an ALM with dimensions of 20×20×5mm3is effective for cell immobilization due to its compact structure and long-term stability. The ALM-immobilized cell system exhibited greater ethanol production efficiency than the freely suspended cell system. By using a central composite design (CCD), the optimum conditions for ethanol production from SSJ by ALM-immobilized cells were determined. The maximum ethanol concentration and volumetric ethanol productivity obtained using ALM-immobilized cells under the optimal conditions were 97.54g/L and 1.36g/Lh, respectively. The use of the ALM-immobilized cells was successful for at least six consecutive batches (360h) without any loss of ethanol production efficiency, suggesting their potential application in industrial ethanol production. |
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