GALACTOSE-RICH POLYSACCHARIDE, PROCESS FOR THE PRODUCTION OF THE POLYMER AND ITS APPLICATIONS

This invention concerns a biopolymer consisting of a polysaccharide composed of galactose (50-90%), glucose (1- 25%), mannose (1-25%) and rhamnose (0.5-20%), which may additionally contain, in trace amounts, xylose, fucose, ribose, arabinose and/or fructose. The galactose-rich polymer also contains...

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Hauptverfasser:	OLIVEIRA PAIS, JOANA, CARVALHO FERNANDES DE MIRANDA REIS, MARIA D'ASCENCAO, PEREIRA DA CUNHA RODRIGUES OLIVEIRA, CRISTINA PAULA, DELGADO ALVES, VICTOR MANUEL, ANDRADE DE FREITAS, MARIA FILOMENA, FREITAS OLIVEIRA, RUI MANUEL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DERIVATIVES THEREOF ENZYMOLOGY EXPLOSIVES EXPLOSIVES OR THERMIC COMPOSITIONS FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES HYGIENE IMPREGNATING OR COATING OF PAPER MANUFACTURE THEREOF MATCHES MEDICAL OR VETERINARY SCIENCE METALLURGY MICROBIOLOGY MUTATION OR GENETIC ENGINEERING ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING POLYSACCHARIDES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL PRODUCTION OF CELLULOSE PULP COMPOSITIONS SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS SPIRITS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G USE OF SINGLE SUBSTANCES AS EXPLOSIVES VINEGAR WINE
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Beschreibung
Zusammenfassung:	This invention concerns a biopolymer consisting of a polysaccharide composed of galactose (50-90%), glucose (1- 25%), mannose (1-25%) and rhamnose (0.5-20%), which may additionally contain, in trace amounts, xylose, fucose, ribose, arabinose and/or fructose. The galactose-rich polymer also contains non-saccharide components, namely, acyl groups. This invention also concerns a process for the production of the galactose-rich polymer, by microbial fermentation using glycerol or glycerol-rich substrates as carbon source, and recovery of the polymer from the culture broth. From the process for the production of the galactose-rich polymer results the co-production of intracellular biopolymers, namely, polyhydroxyalkanoates. This invention also concerns to the application of the galactose-rich polymer and the products of its partial or complete degradation and/or derivatization, namely, galacto- oligosaccharides, galactose, rhamnose and others, by physical, chemical and/or biological methods, in food, agricultural, textile and paper industries, pharmaceutical and cosmetic products, oil and metal recovery in mining industry, industrial waste treatment and wastewater treatment, among others. L'invention concerne un biopolymère constitué d'un polysaccharide composé de galactose (50-90%), de glucose (1-25%), de mannose (1-25%) et de rhamnose (0,5-20%), pouvant également contenir, en quantités infimes, du xylose, du fucose, du ribose, de l'arabinose et/ou du fructose. Le polymère riche en galactose selon l'invention contient également des composants non saccharides, notamment des groupes acyle. L'invention concerne également un procédé de production associé consistant à réaliser une fermentation microbienne au moyen de glycérol ou de substrats riches en glycérol comme source de carbone, et à récupérer le polymère à partir d'un bouillon de culture. Ledit procédé de production entraîne également la coproduction de biopolymères intracellulaires, notamment des polyhydroxyalcanoates. L'invention concerne également les applications de ce polymère et des produits de sa dégradation et/ou dérivatisation partielle ou complète, notamment des galacto-oligosaccharides, du galactose, du rhamnose et autres, par des procédés physiques, chimiques et/ou biologiques, dans l'industrie alimentaire, agricole, textile et papetière, dans des produits pharmaceutiques et cosmétiques, dans la récupération de pétrole et de métaux dans l'industrie minière, dans le traitement des déchets industri