Applied Biochemistry and Biotechnology

, Volume 77, Issue 1–3, pp 205–210 | Cite as

Kinetics of xylitol fermentation by Candida guilliermondii grown on rice straw hemicellulosic hydrolysate

  • Inês C. RobertoEmail author
  • Ismael M. de Mancilha
  • Sunao Sato


The fermentation kinetics for the conversion of rice straw hemicellulosic hydrolysate to xylitol by the yeast Candida guilliermondii was evaluated under batch conditions. The fermentation was accomplished in a 1 L working volume stirred-tank reactor with aeration of 1.3 vvm and agitation of 300 rpm (kLa=15/h). The maximum specific rate of xylitol formation (0.12 g/g) was achieved when the specific growth rate was lowered to 1/5 of its highest value. From analysis of the fermentation kinetics, a linear correlation between specific growth rate (μx) and specific rate of xylitol formation (qp) was evident. Based on the Gaden model, this bioprocess was classified as growth-associated production and the relationship between μx and qp can be described by the equation qp=6.31μx.

Index Entries

Rice straw xylitol fermentation kinetics Candida guilliermondii 


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Copyright information

© Humana Press Inc. 1999

Authors and Affiliations

  • Inês C. Roberto
    • 1
    Email author
  • Ismael M. de Mancilha
    • 1
    • 3
  • Sunao Sato
    • 2
  1. 1.Department of BiotechnologyFaculty of Chemical Engineering of LorenaLorenaBrazil
  2. 2.Faculty of Pharmaceutical SciencesUniversity of São PauloBrazil
  3. 3.Food Science DepartmentFederal University of ViçosaBrazil

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