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  • Title: Multiple induced mutagenesis for improvement of ethanol production by Kluyveromyces marxianus.
    Author: Pang ZW, Liang JJ, Qin XJ, Wang JR, Feng JX, Huang RB.
    Journal: Biotechnol Lett; 2010 Dec; 32(12):1847-51. PubMed ID: 20803163.
    Abstract:
    Kluyveromyces marxianus GX-15 was mutated multiple times by alternately treatment with UV irradiation and NTG for two cycles. Four mutant strains with improved ethanol yield were obtained. The maximum ethanol concentration, ethanol yield coefficient and theoretical ethanol yield of the best mutant strain, GX-UN120, was 69 g/l, 0.46 g/g and 91%, respectively, when fermenting 150 g glucose/l at 40°C. The corresponding values for GX-15 were 58 g/l, 0.39 g/g and 76%, respectively. GX-UN120 grew well in 11% (v/v) of ethanol, while GX-15 could not grow when ethanol was greater than 8% (v/v).
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