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Enzymatic method of producing 4-O- β-D-galactopyranosyl-D-xylose, 4-O- β-D-galactopyranosyl-D-xylose obtained using said method, compositions containing said and the use thereof in evaluating intestinal lactase

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dc.creator Cañada Vicinay, Francisco Javier
dc.creator Corrales, Guillermo
dc.creator Fernández-Mayoralas, Alfonso
dc.creator Martín-Lomas, Manuel
dc.creator Aragón, Juan J.
dc.date 2008-01-16T17:33:39Z
dc.date 2008-01-16T17:33:39Z
dc.date 2006-03-29
dc.date.accessioned 2017-01-31T00:59:43Z
dc.date.available 2017-01-31T00:59:43Z
dc.identifier European Patent Code: EP 1408118 B1
dc.identifier http://hdl.handle.net/10261/2698
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2698
dc.description Filing Date: 2002-06-14.-- Priority Data: ES 200101419 (2001-06-18).-- International Publication Number: WO_2002103038 (20021227).
dc.description An enzymatic process to obtain 4-O-β-D-galactopyranosyl-D-xylose useful in compositions or solutions in the in vivo evaluation of intestinal lactose activity in humans, that comprises the steps of preparing a reaction mixture of D-xylose, a β-D-galactopyranoside and a reaction medium that comprises water buffered to a pH between 5.0 and 9.0; adding 10 to 1,000 units of β-D-galactosidase per gram of β-D-galactopyranoside; subjecting the reaction mixture to a reaction or a temperature between a temperature higher than the freezing point of the reaction mixture and 45ºC, for 2 to 48 hours; for the reaction by deactivation of the β-D-galactosidase; and to isolate and crystallize the fractions that contain 4-O-β-D-galactopyranosyl-D-xylose from a crystallization mixture selected between mixtures of acetone/methanol in a ratio between 5/1 to 20/1 and mixtures of acetone/water in a ratio between 5/1 to 20/1.
dc.format 185663 bytes
dc.format application/pdf
dc.language eng
dc.rights openAccess
dc.title Enzymatic method of producing 4-O- β-D-galactopyranosyl-D-xylose, 4-O- β-D-galactopyranosyl-D-xylose obtained using said method, compositions containing said and the use thereof in evaluating intestinal lactase
dc.type Patente


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