JPH0586799B

JPH0586799B

NEW MATERIAL:The compound of formula I (Gal is galactose; Fruf is fructofuranose; n is 0 or 1) having the following characteristics. Molecular weight, 504 (n=0) or 666 (n=1); solubility, soluble in water and insoluble in benzene, acetone, etc.; color reaction, positive to phenol sulfuric acid method...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: AHIKO KENKICHI, SHUTSUKE SAKANORI, YANAGIDAIRA SHUICHI
Format: Patent
Sprache:eng
Schlagworte:
BEER
BIOCHEMISTRY
CHEMISTRY
COMPOSITIONS THEREOF
CULTURE MEDIA
DAIRY PRODUCTS, e.g. MILK, BUTTER, CHEESE
DERIVATIVES THEREOF
ENZYMOLOGY
FOODS OR FOODSTUFFS
HUMAN NECESSITIES
MAKING THEREOF
METALLURGY
MICROBIOLOGY
MICROORGANISMS OR ENZYMES
MILK OR CHEESE SUBSTITUTES
MUTATION OR GENETIC ENGINEERING
NUCLEIC ACIDS
NUCLEOSIDES
NUCLEOTIDES
ORGANIC CHEMISTRY
PROCESSES USING MICROORGANISMS
PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS
SPIRITS
SUGARS
THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
VINEGAR
WINE
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Beschreibung
Zusammenfassung:NEW MATERIAL:The compound of formula I (Gal is galactose; Fruf is fructofuranose; n is 0 or 1) having the following characteristics. Molecular weight, 504 (n=0) or 666 (n=1); solubility, soluble in water and insoluble in benzene, acetone, etc.; color reaction, positive to phenol sulfuric acid method, etc., and negative to ninhydrin reaction, etc. EXAMPLE:beta-D-galactopyranosyl-(1 6)-beta-D-galactopyranosyl-(1 4)-D-fructofura noside of formula II. USE:A bifidus proliferation factor. PREPARATION:The oligosaccharide of formula III (Glc is glucose) used as a starting raw material is made to react with an alkali such as NaOH preferably at 20-60 deg.C for 2-10 hr to effect isomerization of the material and the reaction mixture is neutralized. After converting the unreacted oligosaccharide in the reaction mixture to an aldonic acid with a weak oxidizing agent, the reaction mixture is desalted and subjected successively to ion exchange resin treatment and activated carbon column treatment to separate the objective compound.