Hetero-polysaccharide which resists pptn. by cationic dyes

New heteropolysaccharide -10, (I), contains 3% protein and 97% carbohydrate and is not pptd. by cationic dyes. Carbohydrate contains 19% uronic acid, 39% glucose, 29% galactose and 13% fucose. (I) is prepd. by cultivating a heteropolysaccharide-generating strain of Erwinia tahitica, (A), under subme...

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Hauptverfasser:	KENNETH SUK KANG, DANNY DALE RICHEY
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES BEER BIOCHEMISTRY CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE FILLING PASTES INKS METALLURGY MICROBIOLOGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MUTATION OR GENETIC ENGINEERING NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES SPIRITS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR VINEGAR WINE WOODSTAINS
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Zusammenfassung:	New heteropolysaccharide -10, (I), contains 3% protein and 97% carbohydrate and is not pptd. by cationic dyes. Carbohydrate contains 19% uronic acid, 39% glucose, 29% galactose and 13% fucose. (I) is prepd. by cultivating a heteropolysaccharide-generating strain of Erwinia tahitica, (A), under submerged aerobic conditions at 28-35 degrees C, in an aq. nutrient medium contg. hydrolysed starch having dextrose equiv. 20-35 as C-source, as well as sources for N, Mg and P. (I) can be used as thickener in aq. compsns. outside textile industry, esp. in aq. paint media and drilling fluids. Thickening properties, pseudoplasticity, stability to salts and total rheology allow (I) to be used as thickener, suspension- and stabilising agent in aq. systems. (I) can be used as additive for textile printing pastes, in compsn. of aq herbicides, in salad compsns. for thickening puddings and as thickener for adhesives.