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| Number | Title | Issue Date |
| 7910339 | Process for producing polysaccharide gum The invention provides a process for producing polysaccharide gum comprising extracting a plant material with an aqueous solvent to produce a polysaccharide gum-containing extract; contacting the extract with at least one proteolytic enzyme to at least partially dig... | 03/22/2011 |
| 7727747 | Solid or semi-solid state fermentation of xanthan on potato or potato waste The present invention presents a method for the aerobic production of xanthan by bacteria of the genus Xanthomonas on a solid or semi-solid substrate. In the exemplary embodiment of the method, a substrate is provided that has a total solids content of about ... | 06/01/2010 |
| 7718405 | Use of pure oxygen in viscous fermentation processes A fermentation process uses substantially pure oxygen as the sole gas introduced into a fermentation vessel while fermentation reactions are active. The oxygen is introduced at multiple locations along the height of the vessel, and is preferably introduced in the vi... | 05/18/2010 |
| 7439044 | High viscosity xanthan polymer preparations Increasing the molecular length of xanthan polymer makes a higher viscosity xanthan composition. Xanthan with higher specific viscosity characteristics provides more viscosity at equivalent concentration in food, industrial and oilfield applications. Methods for inc... | 10/21/2008 |
| 7376117 | Interleaving circuit for a multiband OFDM transceiver Interleaving circuit for a multiband OFDM (orthogonal frequency division multiplexing) transceiver of a ultra wide band wireless personal access network transmitting OFDM modulated symbols, wherein each OFDM symbol consists of a predetermined number (NCBPS | 05/20/2008 |
| 7201884 | Process and apparatus for performing a gas-sparged reaction An improved process, such as a microbiological or enzymatic process, and apparatus, such as an apparatus for producing a cellular product, comprising introducing a gaseous feed stream of at least one gas of low solubility into an aqueous medium containing a microorg... | 04/10/2007 |
| 7148183 | Surfactant-polymer composition for substantially solid-free water based drilling, drill-in, and completion fluids Water based drilling, drill-in, and completion fluids comprising surfactant-polymer blends that are effective to generate effective rheology comprising low shear rate viscosity and effective fluid loss control properties. The water based fluids preferably are substa... | 12/12/2006 |
| 7022838 | Polysaccharide gum and process for its manufacture Processes are disclosed for the purification and recovery of polysaccharide gums from an aqueous solution, particularly xanthan gum from a fermentation broth. An aqueous solution of at least one polysaccharide gum is mixed with a non-solvent stream comprising water ... | 04/04/2006 |
| 7015206 | Use of a polysaccharide excreted by the species in bone repair The invention concerns the use of a polysaccharide excreted by the Vibrio diabolicus species for making a medicine with cicatrising activity, in particular bone repair activity. The invention also concerns a bone reconstruction biomaterial comprising said pol... | 03/21/2006 |
| 6933137 | Animal component free meningococcal polysaccharide fermentation and seedbank development Animal-free meninge fermentation media and process is developed based upon use of a chemically defined medium. To improve polysaccharide production, fed-batch fermentation is examined using different feed solutions and feeding strategies. A feed solution containing ... | 08/23/2005 |
| 6855524 | Method for producing exopolysaccharides The invention concerns a method for producing exopolysaccharides by fermenting micro-organisms characterised in that it consists in carrying out the fermentation in a nutrient medium comprising at least a source of carbon available to the micro-organisms and at leas... | 02/15/2005 |
| 6586213 | Process for clarification of xanthan solutions and xanthan gum produced thereby A process is disclosed for clarifying an aqueous xanthan gum solution comprising treatment of the xanthan solution with at least one chelating agent, surfactant, organic acid, or a mixture thereof, and with a protease enzyme or a lysozyme and a protease e... | 07/01/2003 |
| 6509176 | Heteropolysaccharide produced by an agrobacterium radiobacter The invention concerns a heteropolysaccharide (HP) characterised in that it is obtainable by fermenting in a medium comprising at least an Agrobacterium radiobacter I-2001 (or DSM 12095) strain, one of its recombinants, or one of its mutants, and a carbon... | 01/21/2003 |
| 6485946 | Production of chitosan and chitin The invention relates to a method of producing chitin or chitosan by culturing a Rhizopus azygosporus fungus or an Actinomucor taiwanensis fungus and isolating chitosan or chitin from the culture.... | 11/26/2002 |
| 6464384 | Mixer systems A system for providing improved bulk liquid mixing and effective gas-liquid contacting for mass transfer of the gas to the liquid, especially a non-Newtonian liquid, the viscosity of which decreases when under shearing conditions (shear thinning), in an u... | 10/15/2002 |
| 6410265 | Gene encoding a putive efflux protein for solvents/antibiotics in Pseudomonas mendocina This invention relates to the isolation of a novel putative efflux gene from Pseudomonas mendocina. The putative efflux gene is useful for probing an organism's efflux system to gain an understanding of the mechanisms of solvent tolerance. The invention f... | 06/25/2002 |
| 6399338 | Production of chitosan and chitin The invention relates to a method of producing chitin or chitosan by culturing a Rhizopus azygosporus fungus or an Actinomucor taiwanensis fungus and isolating chitosan or chitin from the culture.... | 06/04/2002 |
| 6391596 | High viscosity xanthan and process for preparing same The present invention is related a high viscosity xanthan and processes for producing said high viscosity xanthan. In particular, the invention relates to a process for increasing the viscosity of xanthan comprising the steps of: (i) diluting xanthan in a... | 05/21/2002 |
| 6316614 | Genetic control of acetylation and pyruvylation of xanthan based polysaccharide polymers Variant xanthan gums are provided which include a water-soluble polysaccharide polymer comprising repeating pentamer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:2:1, and a water-soluble polysaccharide polymer comprising repeating... | 11/13/2001 |
| 6251446 | Use of Xanthomonas liquid carbohydrate fermentation product in foods A food or pharmaceutical composition including a liquid composition comprising the liquid fermentation broth product of a biologically active substance, in a carbohydrate medium other than dairy whey wherein said liquid fermentation broth product has not ... | 06/26/2001 |
| 6251641 | Treatment for the enhancement of bacterial exopolysaccharide recovery A treatment for enhancing the recovery of exopolysaccharide from bacterial cells is disclosed, which treatment includes adding to a cultivation medium containing said cells an amount, effective for the purpose of an alkylsulfosuccinate surfactant.... | 06/26/2001 |
| 6110875 | Methods and materials for degrading xanthan Xanthan molecules are degraded using an xanthanase enzyme complex that is stable at temperatures above 250° F., such as those temperatures found in some wellbores and process streams. The xanthanase enzyme complex is produced by a novel soil bacterium. T... | 08/29/2000 |
| 6066479 | Treatment for the enhancement of bacterial exopolysaccharide recovery A treatment for enhancing the recovery of exopolysaccharide from bacterial cells is disclosed, which treatment includes adding to a cultivation medium containing said cells an amount, effective for the purpose of an alkylsulfosuccinate surfactant.... | 05/23/2000 |
| 6033896 | Process of separation of cells from liquid by adsorption onto fiber The present invention includes a process for separating cells from a liquid media. In broadest terms, the separation process of the present invention is a process for separating cells from a liquid containing cells. The process comprises the steps of: (a)... | 03/07/2000 |
| 6030817 | Production of non-native bacterial exopolysaccharide in a recombinant bacterial host A new recombinant bacteria for the production of exopolysaccharides is disclosed as well as a method for making the recombinant bacteria and making an exopolysaccharide from the bacteria by submerged aerobic fermentation of the bacteria utilizing a sugar ... | 02/29/2000 |
| 6027925 | Production of non-native bacterial exopolysaccharide in a recombinant bacterial host A recombinant bacteria for the production of exopolysaccharides is disclosed as well as a method for making the recombinant bacteria and making an exopolysaccharide from the bacteria by submerged aerobic fermentation of the bacteria utilizing a sugar subs... | 02/22/2000 |
| 5994107 | Process of purifying xanthan gum using an alkaline protease and lysozyme Xanthan gum is purified by heat-treating a xanthan gum fermented broth, and consecutively treating the broth first with alkaline protease and then with lysozyme or in reverse order, and thereafter recovering xanthan gum from the treated broth. A clear aqu... | 11/30/1999 |
| 5985623 | DNA segments and methods for increasing polysaccharide production The present invention relates to DNA segments isolated from Sphingomonas sp. and involved in the biosynthetic production of sphingan polysaccharides to increase the production of the polysaccharide in engineered microorganisms. The present invention also ... | 11/16/1999 |
| 5972661 | Mixing systems A system for providing improved bulk liquid mixing and effective gas-liquid contacting for mass transfer of the gas to the liquid, especially a non-Newtonian liquid, the viscosity of which decreases when under shearing conditions (shear thinning), in an u... | 10/26/1999 |
| 5972695 | Apparatus and method for the production of xanthan gum A fermenter for the production of xanthan gum is provided with an upper helical impeller and a lower turbine impeller which are positioned therewithin, and an agitator shaft for driving these helical impeller and turbine impeller. The helical impeller con... | 10/26/1999 |
| 5948651 | Preparation of water-soluble non-acetylated polysaccharide polymer having repeating pentamer units with xanthomonas Water-soluble polysaccharide polymers are provided including a polymer composed of repeating pentamer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:2:1, and a polymer composed of repeating tetramer units having a D-glucose:D-m... | 09/07/1999 |
| 5912151 | Preparation of xanthan gum A method of increasing xanthan gum production, comprising culturing a Xanthomonas campestris strain having a xanthan-increasing modification in a culture medium, wherein the modification is selected from the group consisting of (1) a mutation causing rifa... | 06/15/1999 |
| 5854034 | DNA segments and methods for increasing polysaccharide production The present invention relates to DNA segments isolated from Sphingomonas sp. and involved in the biosynthetic production of sphingan polysaccharides to increase the production of the polysaccharide in engineered microorganisms. The present invention also ... | 12/29/1998 |
| 5834043 | Lactobacillus sake like strains, production and use of their exopolysaccharides New Lactobacillus sake like strains are provided obtainable from meat products, which strains are capable of producing an exopolysaccharide having shear-thinning properties, even at low concentrations, and/or thickening and/or emulsion-stabilizing propert... | 11/10/1998 |
| 5756317 | Production of heteroplysaccharide biopolymers with xanthomonas in oil-in-water emulsion Heteropolysaccharide biopolymers well adopted as thickening agents are improvedly produced by microbially fermenting a carbohydrate nutrient medium, said nutrient medium comprising an oil-in-water emulsion of a discontinuous oily phase dispersed within a ... | 05/26/1998 |
| 5705368 | Process for preparation of purified xanthan gum The process comprises heat-treating a xanthan gum fermented broth, and consecutively treating the broth first with alkaline protease and then with lysozyme or in reverse order, and thereafter recovering xanthan gum from the treated broth. A clear aqueous ... | 01/06/1998 |
| 5702927 | Process for preparation of purified xanthan gum A xanthan gum having an improved transmittance is disclosed. Further, the transmittance of the xanthan gum is at least 75% in an 1% by weight aqueous solution. The xanthan gum is prepared by subjecting a strain ATCC 55429 or ATCC 55298 to submerged fermen... | 12/30/1997 |
| 5679556 | Process for the recovery and purification of xanthan gum A xanthan gum-containing fermented solution is subjected to an enzyme treatment for solubilizing the microbial cells present in the fermented solution. While the fermented solution having undergone the enzyme treatment is maintained at a temperature of 50... | 10/21/1997 |
| 5610037 | Production of polysaccharides of high viscosity using xanthomonas campestris and glycoamylase with fluidized starch Polysaccharide biopolymers, e.g., xanthan gum, are produced by the aerobic microbial fermentation of a carbohydrate in an aqueous nutrient medium containing starch as a source of carbon, and wherein the fermentation is carried out in the presence of a sac... | 03/11/1997 |
| 5595892 | Process for preparation of purified xanthan gum The process includes heat-treating a xanthan gum fermented broth, and consecutively treating the broth first with alkaline protease and then with lysozyme or in reverse order, and thereafter recovering xanthan gum from the treated broth. A clear aqueous s... | 01/21/1997 |
