Improvement in xylitol production from sugarcane bagasse hydrolysate achieved by the use of a repeated-batch immobilized cell system.
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%.
Carvalho
Walter
W
Faculdade de Engenharia Química de Lorena, Departamento de Biotecnologia, SP, Brazil.
Silva
Silvio S
SS
Vitolo
Michele
M
Felipe
Maria G A
MG
Mancilha
Ismael M
IM
D001711:Biotransformation; D018914:Cells, Immobilized / Q000378:metabolism*; D002482:Cellulose / Q000378:metabolism*; D005285:Fermentation; D006868:Hydrolysis; D019684:Magnoliopsida / Q000166:cytology / Q000378:metabolism*; D014993:Xylitol / Q000096:biosynthesis*
D002482:Cellulose; C027433:bagasse; D014993:Xylitol