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Title: Fermentation of high concentrations of lactose to ethanol by engineered flocculent Saccharomyces cerevisiae. Author: Guimarães PM, Teixeira JA, Domingues L. Journal: Biotechnol Lett; 2008 Nov; 30(11):1953-8. PubMed ID: 18575804. Abstract: The development of microorganims that efficiently ferment lactose has a high biotechnological interest, particularly for cheese whey bioremediation processes with simultaneous bio-ethanol production. The lactose fermentation performance of a recombinant Saccharomyces cerevisiae flocculent strain was evaluated. The yeast consumed rapidly and completely lactose concentrations up to 150 g l(-1) in either well- or micro-aerated batch fermentations. The maximum ethanol titre was 8% (v/v) and the highest ethanol productivity was 1.5-2 g l(-1) h(-1), in micro-aerated fermentations. The results presented here emphasise that this strain is an interesting alternative for the production of ethanol from lactose-based feedstocks.[Abstract] [Full Text] [Related] [New Search]