<b>Evaluation of oat hull for biotechnological production of xylitol</b> - DOI: 10.4025/actascitechnol.v26i2.1509

Authors

  • Carolina Tamanini UEL
  • Antonio Sergio de Oliveira UEL
  • Maria das Graças de Almeida Felipe FAENQUIL
  • Eliane Vieira Canettieri (FEG / UNESP)
  • Elisângela de Jesus Cândido FAENQUIL
  • Maria Celia de Oliveira Hauly UEL

DOI:

https://doi.org/10.4025/actascitechnol.v26i2.1509

Keywords:

resí­duos lignocelulósicos, casca de aveia, xilose, xilitol, Candida guilliermondii

Abstract

Oat, cereal rich in fiber, cultivated mainly in the South of Brazil, gives rise to 25-30% of its weight as oat hulls when it is processed for nourishing purposes, causing negative ambiental impact. Therefore, this residue can be used as raw material for obtaining products such as xylitol, a sugar-alcohol with sweetness similar to sucrose, anticariogenic, substitute for sugars in diabetic and obese people´s diet. This polyol is currently produced by chemical catalysis of the xylose obtained from lignocellulosic residue. However, the bioconversion by yeasts is an alternative for this process. This work aims to determine the chemical composition of the oat hulls and to use the acid hidrolysate from this residue for the xylitol production by batch fermentation employing Candida guilliermondii. Chemical analysis showed that oat hulls are composed by cellulose (29.26%), hemicellulose (28.35%) and lignin (22.22%), among others. The batch fermentation resulted in xylitol yield and volumetric productivity of 0.54 g/g and 0.34 g/L.h, respectively

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Author Biography

Maria Celia de Oliveira Hauly, UEL

Graduação em Farmácia Bioquí­mica pela Universidade Estadual de Londrina (1974), mestrado em Ciências de Alimentos pela Universidade Estadual de Londrina (1979) e doutorado em Ciências (Bioquí­mica) pela Universidade Federal do Paraná (1991). Docente da Universidade Estadual de Londrina (UEL) de 1975 a 2005 . Atuou como professora associada C no Departamento de Bioquí­mica e Biotecnologia da UEL até dezembro de 2005. Foi Coordenadora do Programa de Mestrado em Biotecnologia 2002 /2003 na UEL.Tem experiência na área de Bioquí­mica, com ênfase em Biotecnologia, atuando principalmente nos seguintes temas: polissacarí­deos (dextrana , inulina, celulose , hemicelulose ,etc) fermentação, bactérias láticas e xilitol Currí­culo Lattes

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Published

2008-03-28

How to Cite

Tamanini, C., Oliveira, A. S. de, Felipe, M. das G. de A., Canettieri, E. V., Cândido, E. de J., & Hauly, M. C. de O. (2008). <b>Evaluation of oat hull for biotechnological production of xylitol</b> - DOI: 10.4025/actascitechnol.v26i2.1509. Acta Scientiarum. Technology, 26(2), 117–125. https://doi.org/10.4025/actascitechnol.v26i2.1509

Issue

Vol. 26 No. 2 (2004)

Section

Biotechnology

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