Continuous production of fructose syrup and ethanol from hydrolysed Jerusalem artichoke juice |
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Authors: | D W Koren Z Duvnjak |
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Institution: | (1) Department of Chemical Engineering, Faculty of Engineering, University of Ottawa, 770 King Edward Avenue, K1N 9B4 Ottawa, Ontario, Canada |
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Abstract: | Summary The results from this study showed that Jerusalem artichoke juice can be used for the production of very enriched fructose syrup by selective conversion of glucose to ethanol in a continuous process using immobilized cells ofSaccharomyces cerevisiae ATCC 36859. The product contained up to 99% of the total carbohydrates as fructose compared to 76% in the feed. Using Jerusalem artichoke juice supplemented with some glucose a product was obtained with 7.5% w/v ethanol which made ethanol recovery economically favourable. It was found that some fructose was consumed in these continuous processes; the glucose/fructose conversion rate ratio was regulated by the glucose concentration in the product stream. |
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Keywords: | Saccharomyces cerevisiae Jerusalem artichoke High-fructose syrup Ethanol Immobilized yeast cells |
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