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- Title
Integrated Process of Arabinose Biopurification and Xylitol Fermentation Based on the Diverse Action of Candida boidinii.
- Authors
Fehér, C.; Gazsó, Z.; Gál, B.; Kontra, A.; Barta, Z.; Réczey, K.
- Abstract
Hemicellulosic hydrolysates of agro-residues are promising raw materials for xylitol and arabinose production through biotechnological methods. Two-step acidic fractionation of corn fibre was developed to produce a glucose- and arabinose-rich hydrolysate and a xylose-rich hydrolysate. An integrated process of arabinose biopurification on the glucose- and arabinose-rich hydrolysate and xylitol fermentation on the xylose-rich hydrolysate using Candida boidinii NCAIM Y.01308 was introduced, in which cell mass produced in arabinose biopurification was used as inoculum in the xylitol fermentation. Aerobic biopurification resulted in an arabinose solution containing 9.2 g L-1 of arabinose with a purity of 90%, based on total sugars. Xylitol fermentation under microaerobic conditions resulted in a xylitol yield of 53% of theoretical and a xylitol concentration of 10.4 g L-1 in three days. Hence, an integrated biorefinery process of hemicellulosic hydrolysates was developed based on the diverse action of C. boidinii to purify arabinose and produce xylitol.
- Subjects
ARABINOSE; XYLITOL; FERMENTATION; CANDIDA boidinii; HEMICELLULOSE; AGRICULTURAL wastes
- Publication
Chemical & Biochemical Engineering Quarterly, 2015, Vol 29, Issue 4, p587
- ISSN
0352-9568
- Publication type
Article
- DOI
10.15255/CABEQ.2014.2145