Ethanol production by a mixed culture of flocculent strains of Zymomonas mobilis and Saccharomyces sp. |
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Authors: | C Abate D Callieri Emilio Rodríguez Oscar Garro |
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Institution: | (1) PROIMI, Avda. Belgrano y pje. Caseros, 4000-Tucumán, Argentina. Fax: 54 81330087, AR;(2) Cátedras de Bioloǵa Celular y Biología Molecular, Fac. Bioq. Qca. y Farmacia, UNT, Chacabuco 451, 4000-Tucumán, Argentina, AR |
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Abstract: | Pure and mixed cultures of Zymomonas mobilis and Saccharomyces sp. were tested for the production of ethanol using sucrose as the carbon source. Both strains, isolated from spontaneously
fermenting sugar-cane juice, are flocculent and alcohol-tolerant. The best results were obtained using a mixed culture, with
a yield of 0.5 g ethanol/g sugar consumed and a volumetric productivity of 1.5 g ethanol l-1 h-1. No levan was produced even if a sucrose-based medium was used.
Received: 20 April 1995/Received revision: 26 July 1995/Accepted: 13 September 1995 |
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