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PublicationBioresource Technology
Year2012
Volume109
Pages123-130
International

Analysis of neofructooligosaccharides production mediated by the extracellular beta-fructofuranosidase from Xanthophyllomyces dendrorhous

Authors:Dolores Linde , Rodriguez-Colinas B., Marta Estevez , Ana Poveda , Francisco José Plou Gasca, Maria Fernandez-Lobato
Groups of research:Applied Biocatalysis

The extracellular β-fructofuranosidase Xd-INV from the yeast Xanthophyllomyces dendrorhous mainly synthesizes the neo-fructooligosaccharides (neo-FOS) neokestose and neonystose. This enzyme is a glycoprotein with a content of 59–67% N-linked carbohydrates and an estimated molecular mass of 160–200 kDa. The extent level of glycosylation affects the thermal behaviour of the enzyme but not its hydrolase and transferase activities, which are optimal at 60–70 °C. The neo-FOS yield of this enzyme was increased from 40 to 168 g/L when the sucrose concentration increased from 420 to 600 g/L and when the reaction was carried out at 60 °C. The neo-FOS levels obtained (168 g/L) in this work are the largest reported for any microbial β-fructofuranosidase.

Keywords:Extracellular β-fructofuranosidase, Xanthophyllomyces dendrorhous, Neofructooligosaccharides, Prebiotics
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