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  • Title: A new arabinofuranohydrolase from Bifidobacterium adolescentis able to remove arabinosyl residues from double-substituted xylose units in arabinoxylan.
    Author: Van Laere KM, Beldman G, Voragen AG.
    Journal: Appl Microbiol Biotechnol; 1997 Mar; 47(3):231-5. PubMed ID: 9114514.
    Abstract:
    An arabinofuranohydrolase (AXH-d3) was purified from a cell-free extract of Bifidobacterium adolescentis DSM 20083. The enzyme had a molecular mass of approximately 100 kDa as determined by gel filtration. It displayed maximum activity at pH 6 and 30 degrees C. Using an arabinoxylan-derived oligosaccharide containing double-substituted xylopyranosyl residues established that the enzyme specifically released terminal arabinofuranosyl residues linked to C-3 of double-substituted xylopyranosyl residues. In addition, this arabinofuranohydrolase released arabinosyl groups from wheat flour arabinoxylan polymer but showed no activity towards p-nitrophenyl alpha-1-arabinofuranoside or towards sugar-beet arabinan, soy arabinogalactan, arabino-oligosaccharides and arabinogalacto-oligosaccharides.
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