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Fermentation technologies have been developed to improve the production of ethanol and an alternative is the immobilization technology, which offers the possibility of efficiently incorporating symbiotic bacteria in the same matrix. This study analyzes the potential use of immobilized and coinmobilized systems on beads of calcium alginate for ethanol production used mango waste (Mangifera indica) by Zymomonas mobilis and Saccharomyces cerevisiae compared with free cells culture and evaluate the effect of glucose concentration on productivity in coimmobilized system using a Chemostat reactor Ommi Culture Plus. For free cell culture, the productivity was higher for Z. mobilis (5.76 g L h) than for S. cerevisiae (5.29 g L h); while in coimmobilized culture, a higher productivity was obtained (8.80 g L h) with respect to immobilized cultures (8.45 g L h 8.70 g L h). The conversion of glucose to ethanol for coimmobilized system was higher (6.91 mol ethanol) with 50 g L of glucose compared to 200 g L of glucose (5.82 mol ethanol); suggesting the immobilized and coimmobilized cultures compared with free cells offer an opportunity for the reuse of organic residues and high alcohol production.

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Potential Production of Ethanol by Saccharomyces cerevisiae Immobilized and Coimmobilized with Zymomonas mobilis: Alternative for the Reuse of a Waste Organic