The influence of CDTA and DPTA on ethanol production from sugar cane molasses using Saccharomyces cerevisiae

Authors

  • R. A. Oderinde,

    Corresponding author
    1. Chemistry Department, University of Ibadan, Ibadan, Nigeria
    • Chemistry Department, University of Ibadan, Ibadan, Nigeria
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  • Ph.D. J. I. Okogun,

    Corresponding author
    1. Chemistry Department, University of Ibadan, Ibadan, Nigeria
    • Chemistry Department, University of Ibadan, Ibadan, Nigeria
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  • K. O. Esuoso

    Corresponding author
    1. Chemistry Department, University of Ibadan, Ibadan, Nigeria
    • Chemistry Department, University of Ibadan, Ibadan, Nigeria
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Abstract

Effects of complexing agents on the sensitivity of ethanol production using Saccharomyces cerevisiae were investigated using trans-1,2-diamino-cyclohexane-N,N,N′,N′-tetraacetic acid (CDTA) and diethylene triamine pentaacetic acid (DPTA). Addition of 600 ppm CDTA during inoculation produces a maximum stimulation; ethanol production at this concentration was 1.5% (v/v) more than the control cultures (∽ 6%). 1000 ppm CDTA produces maximum effect during propagation which was 2.3% more than the control cultures. When DPTA was introduced during inoculation, 800 ppm DPTA produces a maximum effect, which was 2.9% more than the control cultures. 200 ppm DPTA produces a maximum stimulatory effect of 1.0% more than the control cultures. No significant effect was observed when DPTA was added during fermentation but 700 ppm CDTA increased ethanol production by 1.3% more than the control cultures.

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