Improvement in xylitol production from sugarcane bagasse hydrolysate achieved by the use of a repeated-batch immobilized cell system |
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Authors: | Carvalho Walter Silva Silvio S Vitolo Michele Felipe Maria G A Mancilha Ismael M |
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Affiliation: | Faculdade de Engenharia Química de Lorena, Departamento de Biotecnologia, SP, Brazil. |
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Abstract: | Candida guilliermondii cells were immobilized in Ca-alginate beads and used for xylitol production from concentrated sugarcane bagasse hydrolysate during five successive fermentation batches, each lasting 48 hours. The bioconversion efficiency of 53.2%, the productivity of 0.50 g/l x h and the final xylitol concentration of 23.8 g/l obtained in the first batch increased to 61.5%, 0.59 g/l x h and 28.4 g/l, respectively, in the other four batches (mean values), with variation coefficients of up to 2.3%. |
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