EAI Endorsed Transactions on Energy Web 17(12): e1

Research Article

Studies on enhanced bio-ethanol production by fermentation using yeast cells

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  • @ARTICLE{10.4108/eai.14-7-2017.152890,
        author={Narasimhulu K. and Manasa P.},
        title={Studies on enhanced bio-ethanol production by fermentation using yeast cells},
        journal={EAI Endorsed Transactions on Energy Web},
        volume={17},
        number={12},
        publisher={EAI},
        journal_a={EW},
        year={2017},
        month={7},
        keywords={Immobilized cells, fermentation, recyclability, alginate, bioethanol, glucose},
        doi={10.4108/eai.14-7-2017.152890}
    }
    
  • Narasimhulu K.
    Manasa P.
    Year: 2017
    Studies on enhanced bio-ethanol production by fermentation using yeast cells
    EW
    EAI
    DOI: 10.4108/eai.14-7-2017.152890
Narasimhulu K.1,*, Manasa P.2
  • 1: Assistant Professor, Department of Biotechnology, National Institute of Technology Warangal, India
  • 2: Research Scholar, Department of Biotechnology, National Institute of Technology Warangal, India.
*Contact email: simha_bt@nitw.ac.in

Abstract

Ethanol plays an important role in the industry as a potential alternative fuel. However, the production of ethanol is significantly limited due to a number of factors such as low production rate by microbes, limited raw materials, recyclability and industrial scale-up. In this study, we compared two strains of yeasts for bio-ethanol production by fermentation in batch mode for free and immobilized cells. With glucose as the source of carbon, the batch culture gave a maximum bioethanol concentration of 30.02 gL-1 and 28.78 gL-1 for S.cerevisiae and Baker’s yeast respectively. For immobilization testing, 3- 5mm diameter sodium alginate beads were tested, each immobilized with a specific microbe and a mixture. For 3 sets of studies done on recyclability of beads, the bioethanol concentration decreased in each subsequent set for both the samples.