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Purpose of work Using inulin (polyfructose) obtained from Jerusalen artichokes, we have produced fructose free of residual glucose using a recombinant inulinase-secreting strain of Saccharomyces cerevisiae in a one-step fermentation of Jerusalem artichoke tubers. For producing fructose from inulin, a recombinant inulinase-producing Saccharomyce cerevisiae strain was constructed with a deficiency in...
Inulinase gene (Kcinu) derived from Kluyveromyces cicerisporus was expressed extracellularly in Kluyveromyces lactis using an episomal vector directed by Kcinu promoter. The influence of hap1 gene disruption on the expression of inulinase was studied. Inulinase activity in the supernatant of the recombinant Klhap1Δ strain was 391 U ml−1 after cultured 120 h, which was 2.2-fold that of the wild type...
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