USE OF O-.BETA.-D-GALACTOPYRANOSYL-D-XYLOSES FOR THE PREPARATION OF COMPOSITIONS AND SOLUTIONS FOR THE EVALUATION OF INTESTINAL LACTASE,AND PRODUCTION PROCESS

There is disclosed the use of O-.beta.-D-galactopyranosyl-D- xyloses, particularly 2-O-.beta.-D-galactopyranosyl-D-xylose, and 3-O-.beta.-D-galactopyranosyl--D-xylose, for the preparation of compositions and solutions intended to the evaluation of the intestinal lactase, which present an affinity to...

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Hauptverfasser:	CANADA VICINAY, FRANCISCO JAVIER, FERNANDEZ-MAYORALAS ALVAREZ, ALFONSO, MARTIN LOMAS, MANUEL, LOPEZ ALVAREZ, ROSA, VILLANUEVA TORREGROZA, DANIEL, ARAGON REYES, JUAN JOSE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS OR TEST PAPERS THEREFOR CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL ORENZYMOLOGICAL PROCESSES DERIVATIVES THEREOF ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEICACIDS OR MICROORGANISMS METALLURGY MICROBIOLOGY MUTATION OR GENETIC ENGINEERING NUCLEIC ACIDS NUCLEOSIDES NUCLEOTIDES ORGANIC CHEMISTRY PROCESSES OF PREPARING SUCH COMPOSITIONS SPIRITS SUGARS VINEGAR WINE
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Zusammenfassung:	There is disclosed the use of O-.beta.-D-galactopyranosyl-D- xyloses, particularly 2-O-.beta.-D-galactopyranosyl-D-xylose, and 3-O-.beta.-D-galactopyranosyl--D-xylose, for the preparation of compositions and solutions intended to the evaluation of the intestinal lactase, which present an affinity to the substantially enhanced lactase. There is also disclosed a process for producing O-.beta.-D-galactopyranosyl-D-xyloses, comprising: reacting a D-xylose and a substrate of .beta.-D- galactopyranoside in the presence of an enzyme .beta.- galactosidase, in an aqueous medium buffered to a pH comprised between 5.0 and 9.0 and at temperature between 4 and 37.degree.C; deactivating the .beta.-galactosidase by heating at 100.degree.C when reaching the maximum yield of formation of disaccharides detected through thin layer chromatography, and isolating the formed disaccharides through filtration in a packed column with a thinner selected between water and water/alcohol.