Bioconversion of Rice Straw Hemicellulose Hydrolysate for the Production of Xylitol

Effect of pH and Nitrogen Source
  • Inés C. C. Roberto
  • Silvio S. Silva
  • Maria G. A. Felipe
  • Ismael M. De Mancilha
  • Sunao Sato
Part of the ABAB Symposium book series (ABAB, volume 57/58)

Abstract

Xylitol production by the yeast Candida guilliermondii was evaluated in a rice straw hemicellulose hydrolysate under different conditions of initial pH and nitrogen source. Xylitol production was significantly affected (p < 0.05) by the nitrogen source, pH, and the interaction between these factors. The best yield and productivity were observed at initial pH of 5.3 in medium containing ammonium sulfate as nitrogen source. Under these conditions, the xylitol yield factor (Yp/s) was 0.68 g/g and volumetric productivity (Qp) was 0.51 g/L.h.

Index Entries

Rice straw hemicellulose hydrolysate xylitol xylose Candida guilliermondii 

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Inés C. C. Roberto
    • 1
  • Silvio S. Silva
    • 1
  • Maria G. A. Felipe
    • 1
  • Ismael M. De Mancilha
    • 1
  • Sunao Sato
    • 2
  1. 1.Faculty of Chemical Engineering of LorenaCenter for BiotechnologyLorenaBrazil
  2. 2.Faculty of Pharmaceutical SciencesUniversity of Sao PauloBrazil

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