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Batch xylitol production from wheat straw hemicellulosic hydrolysate using Candida guilliermondii in a stirred tank reactor

Research paper by Larissa Canilha, João B. Almeida e Silva, Maria G.A. Felipe, Walter Carvalho

Indexed on: 01 Nov '03Published on: 01 Nov '03Published in: Biotechnology Letters



Abstract

Batch production of xylitol from the hydrolysate of wheat straw hemicellulose using Candida guilliermondii was carried out in a stirred tank reactor (agitation speed of 300 rpm, aeration rate of 0.6 vvm and initial cell concentration of 0.5 g l−1). After 54 h, xylitol production from 30.5 g xylose l−1 reached 27.5 g l−1, resulting in a xylose-to-xylitol bioconversion yield of 0.9 g g−1 and a productivity of 0.5 g l−1 h−1.