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MÉTODOS DE PURIFICACIÓN DE HIDROLIZADOS DE BAGAZO DE CAÑA DE AZÚCAR PARA LA OBTENCIÓN DE XILITOL

2006; Taylor & Francis; Volume: 5; Issue: 2 Linguagem: Inglês

1696-2443

Massimiliano Verde, Ismael M. Mancilha, J. Silva e Batista de Almeida, A. I. Nápoles Solenzar,

Microbial Metabolites in Food Biotechnology

Three treatments methods for sugarcane bagasse hemicellulosic hydrolysate were tested in order to minimize its toxicity for the biological production of xylitol; using ionic exchange resins (TH1 and TH2) and activated charcoal (TH3). The treated hydrolysates were fermented in shaker flasks by the yeast Candida guilliermondii FTI 20037. The statistical analysis showed that TH1 and TH2 were the best treatments. Concerning to the fermentation process, it was observed that there was a significant difference (P = 0.05) among the treatments and it was detected the highest xylitol productivity and yield with TH1 (0.66 g/Lh, 0.73 g/g) and the lowest with TH3 (0.48 g/Lh; 0.59 g/g). These results showed that the ionic exchange resins increase the efficiency of the fermentative process more than the treatment of adsorption with activated charcoal.