Original scientific paper
A Shortcut to the Production of High Ethanol Concentration from Jerusalem Artichoke Tubers
Xiang-Yang Ge
; The Key Laboratory of Industrial Biotechnology, Ministry of Education, P. R. China
Wei-Guo Zhang
; The Key Laboratory of Industrial Biotechnology, Ministry of Education, P. R. China
Abstract
Aspergillus niger SL-09, a newly isolated exoinulinase-hyperproducing strain, and Saccharomyces cerevisiae Z-06, with high ethanol tolerance, were used in a fed-batch process for simultaneous saccharification and fermentation of Jerusalem artichoke tuber mash and flour. S. cerevisiae Z-06 utilized 98 % of the total sugar and produced 19.6 % of ethanol in 48 h. In this process the conversion efficiency of the fermentation of Jerusalem artichoke and the production of ethanol were 90 % of the theoretical ethanol yield and the cost of the production of flour was cut nearly into half.
Keywords
Aspergillus niger; ethanol; inulinase; Jerusalem artichoke; Saccharomyces cerevisiae
Hrčak ID:
110539
URI
Publication date:
15.9.2005.
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