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  • Title: Optimization of the simultaneous saccharification and fermentation process using thermotolerant yeasts.
    Author: Ballesteros I, Oliva JM, Ballesteros M, Carrasco J.
    Journal: Appl Biochem Biotechnol; 1993; 39-40():201-11. PubMed ID: 8323260.
    Abstract:
    Different treatments to improve the thermotolerance of fermenting yeasts for simultaneous ethanol saccharification and fermentation process of cellulosic materials have been examined. Yeasts of the genera Saccharomyces and Kluyveromyces were tested for growth and fermentation at progressively higher temperatures in the range of 42-47 degrees C. The best results were obtained with K. marxianus LG, which was then submitted to different treatments in order to achieve thermotolerant clones. A total of 35 new clones were obtained that dramatically improved the SSF of 10% Solka-floc substrate at 45 degrees C when compared to the original strain, some with ethanol concentrations as high as 33 g/L.
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