S. cerevisiae, commercial ethanol-producing bacteria, has many advantages over other known ethanol producing microorganisms. The most important are high ethanol yields, ethanol tolerance, high robustness and high resistance to toxic inhibitors.
E.aerogenes can convert various carbohydrates, such as sugars and sugar alcohols, to H2, ethanol, 2,3-butanediol, lactate and acetate. Ito et al. reported that E. aerogenes HU-101 mainly produces H2 and ethanol with a minimal production of other by-products when glycerol was used as substrate.
However, both strains produced low ethanol and H2 production. It is necessary to further optimize culture condition or improve production technique. Therefore, immobilized cell technology was selected to increase the production of ethanol and H2 in this study.
S. cerevisiae, commercial ethanol-producing bacteria, has many advantages over other known ethanol producing microorganisms. The most important are high ethanol yields, ethanol tolerance, high robustness and high resistance to toxic inhibitors. E.aerogenes can convert various carbohydrates, such as sugars and sugar alcohols, to H2, ethanol, 2,3-butanediol, lactate and acetate. Ito et al. reported that E. aerogenes HU-101 mainly produces H2 and ethanol with a minimal production of other by-products when glycerol was used as substrate.However, both strains produced low ethanol and H2 production. It is necessary to further optimize culture condition or improve production technique. Therefore, immobilized cell technology was selected to increase the production of ethanol and H2 in this study.
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