Ethanol production from Jerusalem artichoke juice using flocculent cells of Kluyveromyces marxianus |
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Authors: | Pratima Bajpai Argyrios Margaritis |
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Institution: | (1) Chemical and Biochemical Engineering Faculty of Engineering Science, The University of Western Ontario, N6A 5B9 London, Ontario, Canada;(2) Thapar Corporate Research & Development Centre, 147 001 Patiala, India |
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Abstract: | Summary Flocculent cells ofKluyveromyces
marxianus SM 16-10 were used for batch production of ethanol from the inulin sugars derived from Jerusalem artichoke tubers. Using 20% initial sugar concentration, a maximum ethanol concentration of 92 g/l was achieved in 7 h, when the flocculent cell concentration was 30 g dry wt./l bioreactor volume. The same flocculent cells were used repeatedly for 7 batch runs starting with fresh medium at the beginning of each run. The ethanol yield was found to be almost constant at about 94% of the theoretical for all the 7 batch cycles, while the maximum ethanol production rate increased from 17.21 g ethanol/1/h during the first batch run to 21 g ethanol/1/h during the last batch run. |
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