Percorrer por autor "Rastall, Robert A."
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- Production and purification of xylooligosaccharides from oil palm empty fruit bunch fibre by a non-isothermal processPublication . Ho, Ai Ling; Carvalheiro, Florbela; Duarte, Luís C.; Roseiro, Luisa B.; Charalampopoulos, Dimitris; Rastall, Robert A.Oil palm empty fruit bunches (OPEFB) fibre, a by-product generated from non-woody, tropical perennial oil palm crop was evaluated for xylooligosaccharides (XOS) production. Samples of OPEFB fibre were subjected to non-isothermal autohydrolysis treatment using a temperature range from 150 to 220 ºC. The highest XOS concentration, 17.6 g/L which relayed from solubilisation of 63 g/100 g xylan was achieved at 210 ºC and there was a minimum amount of xylose and furfural being produced. The chromatographic purification which was undertaken to purify the oligosaccharide-rich liquor resulted in a product with 74–78% purity, of which 83–85% was XOS with degree of polymerisation (DP) between 5 and 40.