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Polysaccharides

Subclass of:

536 - Organic compounds -- part of the class 532-570 series

536000000 - ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1)

536100110 - Carbohydrates or derivatives

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
536123130 Disaccharides (e.g., maltose, sucrose, lactose, formaldehyde lactose, etc.) 30
536123120 Glucans (e.g., pullulan, etc.) 11
Entries
DocumentTitleDate
20090264639Polysaccharide derivative and separating agent for optical isomer containing the same - The present invention provides: a polysaccharide derivative containing a structure wherein hydrogen atoms in a hydroxyl group or amino group at the 2-position and the 3-position of a structure unit of polysaccharide are substituted with different substituents respectively represented by a specific general formula; and, a separating agent for optical isomers, which contains such a polysaccharide derivative. The present invention can provide a novel polysaccharide derivative which has excellent optical isomer separating ability, and is thus suitable for a separating agent for optical isomers, and can provide a separating agent for optical isomers which comprises the polysaccharide derivative.10-22-2009
20100113765GALACTOSE-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 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.05-06-2010
20110015386PERMETHYLATION OF OLIGOSACCHARIDES - A solid-phase permethylation procedure is described. For example, solid-phase permethylation can be utilized to prepare permethylated linear and branched, neutral and sialylated oligosaccharides, which can be analyzed by MALDI-MS.01-20-2011
20110015385ACYLATION OF CARBOHYDRATES - Esterification of a carbohydrate using an acylating agent can effectively be performed using a process comprising: 01-20-2011
20090299053Product Resulting From the Grafting of Fatty Chains to Ulvans and Use of Said Product as a Surfactant - The invention relates to a product resulting from the grafting, by esterification or transesterification, onto at least a part of the hydroxyl functions of an ulvan-type polysaccharide in the form of an acid or in the form of a mono- or divalent salt, in particular a sodium salt, of fatty chains or of mixtures of fatty chains containing 8 to 28 carbon atoms, said fatty chains being saturated or unsaturated, and linear or branched.12-03-2009
20090270607DEGRADATION OF BROWN ALGA-DERIVED FUCOIDAN - Disclosed herein are brown algae-derived fucoidan and in particular a method for degrading fucoidan to a low-molecular weight so that fucoidan as sparingly-degradable polysaccharide (M.W. 3,000,000 to 5,000,000) can be more efficiently extracted from brown algae and it can be absorbed in the human body. The method comprises preparing a fucoidan extract containing as much fucoidan as possible from brown algae selected from 10-29-2009
20120238743TOPICAL COMPOSITION FOR SKIN CONTAINING POLYSACCHARIDE EXTRACT OF RED GINSENG - The present invention relates to a composition for skin application, which has the effects of reducing skin wrinkles, enhancing skin elasticity and preventing skin aging, and more particularly, to a composition for skin application, which contains, as an active ingredient, a polysaccharide extract of red ginseng having a molecular weight of less than 10,000, in which the polysaccharide extract of red ginseng has the effect of increasing the expression of mitochondrial electron transport system enzymes in human skin keratinocytes to enhance the activity of the skin cells, thereby reducing skin wrinkles, increasing skin elasticity and preventing skin aging.09-20-2012
20100056772Method for recovering arabinogalactan (LAG) from fibrous natural plant materials - A method is provided for recovering arabinogalactan from fibrous natural plant material, such as wood from larch trees, said method being a continuous two-step extraction with enrichment method (i.e. counter current extraction) in which preferably water is employed as a solvent. In the counter current process of the invention the fresh solvent initially contacts plant material from which the greater part of the arabinogalactan has been leached and, subsequently, the resulting solution containing the lowest concentration of arabinogalactan contacts the freshest plant material03-04-2010
20090093626High 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 increasing the viscosity of xanthan include inducing particular key genes and increasing copy number of particular key genes.04-09-2009
20100125135SUGAR PRODUCTION BY DECRYSTALLIZATION AND HYDROLYSIS OF POLYSACCHARIDE ENRICHED BIOMASS - Sugar solutions are obtained from polysaccharide enriched biomass by contacting biomass with water and at least one nucleophilic base to produce a polysaccharide enriched biomass comprising a solid fraction and a liquid fraction. The solid fraction is separated from the lignin-containing liquid fraction and contacted with an acid solution, the acid solution comprising about 70 weight percent to about 100 weight percent sulfuric acid or an acid mixture comprising phosphoric acid and sulfuric acid, at a temperature and for a reaction time sufficient to produce a decrystallized biomass mixture. Water is added and the diluted biomass mixture is then hydrolyzed to produce a saccharification product comprising sugars.05-20-2010
20110201801SACCHARIDE STRUCTURES AND METHODS OF MAKING AND USING SUCH STRUCTURES - Described are oligosaccharides having a protecting group at two, a plurality, a majority of, or each position in the oligosaccharide which is amenable to derivatization. Collections, libraries and methods of making and using such oligosaccharides are also described.08-18-2011
20080234477Method for preparing chitosan nano-particles - This invention involves a new method for preparing chitosan nano-particles. This method uses the nano-cavity technology so as to obtain pure chitosan nano-particles and pure chitosan nano-particle latex in a simple way.09-25-2008
20100137579Process for purifying medical grade hyaluronic acid - A process for purifying medical grade hyaluronic acid from a biological source under continual changed pH value is disclosed.06-03-2010
20100305313EXTRACTION PROCESS FOR PLANT INGREDIENTS - The present invention relates to a process for the extraction of plant ingredients, which comprises a) comminuting plant material b) adding a solvent to the comminuted plant material c) subjecting the mixture of comminuted plant material and solvent to an ultrahigh temperature treatment at 95-150° C. over a period of 5-300 seconds.12-02-2010
20090247739CELLULOSIC SUBSTANCE COMPOSITION, CELLULOSIC SUBSTANCE FILM, OPTICALLY COMPENSATORY FILM, POLARIZING PLATE AND IMAGE DISPLAY DEVICE - A cellulosic substance composition includes: a cellulosic substance having a branched structure or cyclic structure-containing aliphatic acyl group (A) having from 4 to 30 carbon atoms, the aliphatic acyl group (A) being represented by formula (1):10-01-2009
20090088565Method for chemically modifying polysaccharides - The invention relates to a method for chemically modifying polysaccharides with the aid of a mechanical device and of at least one modifying reagent. The method is characterized in that the polysaccharide constituent is subjected at least once to a treatment by a roll mill during which at least two adjacent and counter-rotating rolls rotate at different speeds, and the polysaccharide constituent is mixed with the modifying reagent before and/or during the mechanical treatment. During this method, typically pectins, carob seed grain, guar meal and alginates are used as the polysaccharide constituent, and epoxides, amines or carboxylic acid derivatives are used as modifying reagents. The mechanical treatment can be repeated one to three times in a multiple roll mill, preferred rotating speeds of the adjacent rolls typically differing by 200%. The polysaccharides, which are mechanically modified in an extremely homogeneous manner according to the inventive method, are preferably used as thickening agents, gelling agents, emulsifiers, food additives, cosmetic additives, as well as hair and fiber care agents.04-02-2009
20100160623CYCLODEXTRIN INCLUSION COMPLEXES AND METHODS OF PREPARING SAME - The present invention provides a product comprising a guest complexed with a cyclodextrin wherein the guest is more stable in the product and does not degrade as quickly as a product comprising the same guest without a cyclodextrin. In addition, the present invention provides a method of stabilizing guests with a cyclodextrin and reducing the formation of guest degradation products.06-24-2010
20100261893Method for producing cross-linked hyaluronic acid - A method for producing cross-linked hyaluronic acid has cross-linking one or more polymers at a low temperature from 10 to 30° C. for a reaction time greater than 48 hours under basic condition with a cross-linking agent to form a cross-linked hyaluronic acid, wherein the polymer is selected from the group consisting of hyaluronic acid, hyaluronate, derivatives thereof and a mixture thereof. Whereby, a cross-linking agent content in a product of the method is decreased so the product does not require purification.10-14-2010
20100261894METHOD OF ENZYME CLEAVAGE OF POLYSACCHARIDES DERIVED FROM ALGAE - The invention relates to a method for enzyme cleavage of polysaccharides comprising a first sequence [→4)-β-D-GlcpA-(1→4)-α-L-Rhap3 sulphate-(1→]10-14-2010
20110112286METHOD FOR DISSOLVING CELLULOSE AND A CELLULOSIC PRODUCT OBTAINED FROM A SOLUTION COMPRISING DISSOLVED CELLULOSE - The present invention relates to a method for dissolving cellulose. The method comprises—introducing cellulosic raw material,—treating the cellulosic raw material in an enzymatic treatment process,—mixing the cellulosic raw material after the enzymatic treatment in an aqueous solution in order to obtain an aqueous intermediate product containing the cellulosic raw material of at least 3.5 wt.-%, alkali metal hydroxide between 3.5 wt.-% and 7 wt.-% and zinc salt,—freezing the intermediate product to a solid state, and -melting the frozen intermediate product. The present invention also relates to a cellulosic product obtained from a solution comprising dissolved cellulose.05-12-2011
20100240884Process for preparing randomly-bonded polysaccharides - The invention relates to a process for preparing a randomly-bonded polysaccharide, comprising as ingredients a saccharide, a polyol and an acid serving as a catalyst, the process comprising the steps of feeding the ingredients into a reactor in order to dehydrate the fed ingredients to an essentially anhydrous syrup, polycondensating the essentially anhydrous syrup at elevated temperatures in the said reactor while removing the reaction water, wherein the reactor is a mixing kneader device with counter-acting blades, wherein during the feeding step the saccharide, the polyol and the acid serving as catalyst are simultaneously or consecutively fed to the reactor, and in that during the dehydratation and polycondensation step the free water and reaction water is removed from the mixing kneader device by kneading and mixing the fed ingredients and the subsequent essentially anhydrous syrup under reduced pressure in the reactor, and during the polycondensation the essentially anhydrous syrup is continuously kneaded in the kneader reactor until the required degree of polymerisation is obtained.09-23-2010
20090076258Method for synthesizing oligosaccharides and glycosylation - The invention relates to an enzymatic method for synthesizing oligosaccharides, whereby one saccharide group of a sucrose analogue each is transferred onto an acceptor molecule, for example for glycosylating a hydroxyl compound, a saccharide, peptide, or a drug. According to the inventive method, an enzymatic synthesis of β-D-fructofuranosyl-a-D-aldopyranoside is carried out in a first step, and in a second step one of the saccharide groups is enzymatically transferred onto the acceptor molecule.03-19-2009
20110009611CLARIFICATION OF SPHINGANS AND COMPOSITIONS THEREOF - The invention relates to mutant strains of the genus 01-13-2011
20110009612AUTOMATED SOLUTION-PHASE ITERATIVE SYNTHESIS - The first method for iterative solution-phase biomolecule synthesis is described. The method requires only 3 or fewer equivalents of building block at each coupling cycle, and incorporates a FSPE step at the end of each coupling/deprotection sequence to eliminate most byproducts.01-13-2011
20110213140PROCESS FOR CONTINUOUS CATALYTIC ACETYLATION - In a process for continuous acetylation of polysaccharide, a pressure is to be established in a reactor chamber such that a boiling point of a reaction mixture corresponds to a desired reaction temperature and an exothermicity of the reaction is controlled by evaporative cooling.09-01-2011
20110213139Polysaccharide Products with Improved Performance and Clarity in Surfactant-Based Aqueous Formulations and Process for Preparation - A process for producing anionic, nonionic, amphoteric or cationic derivatized polysaccharide products which demonstrate high clarity in surfactant-based compositions. The polysaccharide polymer is reacted for a sufficient time and at a sufficient temperature in the presence of water, caustic, and at least one surfactant. The polysaccharide polymer may optionally be reacted with an oxidizing agent, hydrolytic or proteolytic enzymes, molecular weight reducing agents and a cationizing agent and nonionic agent. The formed derivatized polysaccharide has a lower clarity in water than in an aqueous surfactant system. The derivatized polysaccharide product can be used in personal care and or household care products.09-01-2011
20090099353COMPOSITE FIBRE OF ALGINATE AND CHITOSAN - There are provided composite fibres of alginate and chitosan. Also provided are fibre materials methods of producing composite fibres or films and composite films. In one embodiment there is provided a composite fibre of alginate and chitosan suitable for use in wound management products, wherein chitosan polymer is bonded to alginate polymer along the length of the fibre.04-16-2009
20110178289Construction of new variants of dextransucrase DSR-S by genetic engineering - The present invention relates to a recombinant process for the production of truncated or mutated dextransucrases while conserving the enzymatic activity or their specificity in the synthesis of the α-1,6 bonds. The present invention relates to nucleic acid sequences of truncated or mutated dextransucrases, vectors containing the nucleic acid sequences and host cells transformed by sequences encoding truncated or mutated dextransucrases. In another aspect, the invention concerns a method for producing, in a recombinant manner, truncated or mutated dextransucrases which conserve their enzymatic activity or which conserve their specificity in the synthesis of α-1,6 bonds and can produce, from saccharose, dextrans with high molar mass and modified rheological properties compared with the properties of dextran obtained with the native enzyme and isomalto-oligosaccharides with a controlled molar mass and dextrans. The dextrans and isomalto-oligosaccharides of the invention can be used namely as texturing agents or as prebiotics.07-21-2011
20100063270Purification of Streptococcal Capsular Polysaccharide - A purification process for the capsular polysaccharide of 03-11-2010
20130158253PROCESS FOR RECOVERING SUGARS FROM A PRETREATMENT STREAM OF LIGNOCELLULOSIC BIOMASS - This specification discloses an improved method for conducting the removal of C5 xylan based sugars from biomass. The improved method involves a series of soakings and washings of the biomass as opposed to conducting one soaking and washing step.06-20-2013
20120202985Hyper IgE Animal Model with Enhanced Immunoglobulin Heavy Chain Class Switching to C-epsilon - Described herein are recombinant non-human cells and animals having an alteration of the Sε region such that there is an elevated IgE level. Also described herein is an alteration in the IgH locus allows for enhanced class switch recombination (CSR) such that the desired heavy chain isotype is expressed at an elevated level relative to an unmodified cell.08-09-2012
20110021770FUNGUS POLYOSE COMPOSITION WITH IMMUNITY ENHANCING EFFECT AND APPLICATION THEREOF - The present invention relates to a compound fungus polyose with the effect of enhancing immunity. The compound is prepared with raw material as follows: 01-27-2011
20100168411Method of producing fermentation product and fermentation product - Provided are a fermentation product, which shows a strong antioxidative effect and is efficacious against diseases caused by active oxygen, and a method of producing the same. Stems and leaves of a perennial gramineous plant (rice straw, reed, barely straw, etc.) are mixed with a fermentation medium which comprises egg albumen, egg yolk, rice bran and water optionally together with xylase and thus the stems and leaves of the perennial gramineous plant are decomposed. After conducting lactic acid fermentation, the contents of the fermentation tank are dried. The dry fermentation product thus obtained is extracted with water and the extract is filtered and then concentrated.07-01-2010
20110190487METHOD FOR CROSSLINKING BETA-CYCLODEXTRIN FOR CHOLESTEROL TRAPPING AND REGENERATION THEREOF - Disclosed herein is the use of crosslinked beta-cyclodextrin as a trap for removing cholesterol. The crosslinked beta-cyclodextrin is prepared by crosslinking beta-cyclodextrin in the presence of a crosslinking agent. Treatment with the crosslinked beta-cyclodextrin results in cholesterol-depleted foods. After application to foods, the crosslinked beta-cyclodextrin which traps cholesterol therein can be readily regenerated with organic solvents. The crosslinked beta-cyclodextrin can be applied to almost all cholesterol-containing foods, such as dairy products, meat products, and egg products, with excellent cholesterol removal rates.08-04-2011
20100204464ASCORBIC ACID DERIVATIVES, THEIR PREPARATION METHODS, INTERMEDIATES AND USES IN COSMETICS - A kind of ascorbic acid derivates 3-O-glyco-L-ascorbic acid, their preparation methods, intermediates and uses in cosmetics. The derivates used as vitamin C precursors have better physiological effect than 2-O-α-D-glucopyranosyl ascorbic acid (AA-2G) and are more stable. Present compounds can be used in many fields, such as in cosmetics, pharmaceuticals, foodstuffs and livestock feed, and especially as whitening agents in cosmetics. The preparation method involves protecting the 5,6-dihydroxyl of ascorbic acid, then coupling with 1-haloacylglycosyl, obtaining the intermediate 3-O-(acylglycosyl)-(5,6-O-isopropylidine)-L-ascorbic acid, removing the isopropylidine and acyl from the intermediates, thereby obtaining the target substance.08-12-2010
20110028708POLYSACCHARIDE DERIVED MATERIALS - A mesoporous material is derived from a polysaccharide by thermally assisted partial carbonisation after expansion. The polysaccharide is an acid containing polysaccharide or mixture of polysaccharides.02-03-2011
20120041188METHOD FOR OBTAINING INULIN FROM PLANTS - The invention describes a method for obtaining inulin which comprises: a) finely comminuting inulin-containing plant material, wherein particle sizes of the plant material are generated which are smaller than the size of the inulin-containing plant cells, b) suspending the finely comminuted plant material in a liquid, wherein inulin is released from the plant material and suspended in particulate form in the liquid, c) separating off plant particles from the liquid, wherein the inulin which is suspended in particulate form remains in the liquid, d) separating off the inulin which is suspended in particulate form from the liquid. The method is suitable in particular for obtaining inulin from artichoke roots.02-16-2012
20120309957EPIMERISATION OF SACCHARIDES - The present invention relates to a process for an epimerization of a saccharide in a microdevice consisting of a network of micron-sized channels in presence of molybdenum containing catalyst. It further relates to the use of a microdevice consisting of a network of micron-sized channels for the epimerization reaction of saccharides and the oligomerisation of the thus obtained epimerized saccharide, preferably into manno-oligosaccharides.12-06-2012
20120136147Method of hydrolyzing an enzymatic substrate - The invention is directed to droplet actuator devices and assay methods. The method may include immobilization of the enzymatic substrate including forming an inclusion complex with the substrate within an aqueous environment in contact with an oil.05-31-2012
20130172547COMPOSITIONS COMPRISING C5 AND C6 OLIGOSACCHARIDES - Compositions comprising C5 and C6 saccharides of varying degrees of polymerization and low levels of undesirable impurities, such as compounds containing sulfur, nitrogen, or metals, are disclosed.07-04-2013
20100048886PROCESS FOR PRODUCING SILYLATED PULLULAN AND COSMETIC PREPARATION - The present invention provides a process for producing silylated pullulan, which features reacting pullulan with N,O-bistrimethylsilylacetamide by using, as a reaction medium, only one of N-methyl-2-pyrrolidone and N-ethyl-2-pyrrolidone or a mixed solvent of both of them. Compared with conventional processes, the process according to the present invention can produce high-purity silylated pullulan simply, easily and efficiency.02-25-2010
20100048885Immunostimulating Polysaccharides Isolated From Curcuma Xanthorrhiza and Manufacturing Method Thereof - The present invention provides a method for manufacturing polysaccharides isolated from 02-25-2010
20130172548DERIVATIZATION OF OLIGOSACCHARIDES - A method for purifying, separating and/or isolating an oligosaccharide or a salt thereof is presented. An embodiment of the invention is based upon the formation of anomeric O-benzyl/substituted O-benzyl derivatives in a selective anomeric alkylation reaction.07-04-2013
20100010211Vaccine - The invention relates to a vaccine for the treatment of disease caused by 01-14-2010
20100174063Polysaccharide Produced by Microorganism Belonging to Genus Bifidobacterium - A polysaccharide comprising galactose, glucose, rhamnose, and pyruvic acid as constituents, wherein the galactose, glucose, and rhamnose are contained in a molar ratio of 4:2:1, and the pyruvic acid is contained in an amount of 4 to 7 wt %. The polysaccharide can be obtained by culturing 07-08-2010
20130172546COMPOSITIONS COMPRISING C5 AND C6 OLIGOSACCHARIDES - Compositions comprising C5 and C6 saccharides of varying degrees of polymerization and low levels of undesirable impurities, such as compounds containing sulfur, nitrogen, or metals, are disclosed.07-04-2013
20130203983THERMALLY INHIBITED POLYSACCHARIDES AND PROCESS OF PREPARING - This invention is directed to a process for making a thermally inhibited polysaccharide by dehydrating a polysaccharide to substantially anhydrous or anhydrous conditions and thermally inhibiting the substantially anhydrous or anhydrous polysaccharide at a temperature of 100° C. or greater for a time sufficient to inhibit the polysaccharide in an oxygen enriched concentration of at least 6.5 moles/m08-08-2013
20130178616USE OF MODIFIED OLIGO-B-(1,3)-GLUCANES FOR TREATING DISEASES OF THE IMMUNE SYSTEM OLIGO-B-(1,3V-GLUCANE-(1,3)-MANNOSE, OLIGO-B-(1,3)-GLUCANE-(1,3)-MANNITOL AND DERIVATIVES THEREOF, METHODS FOR PREPARING THE SAME AND DRUGS CONTAINING THEM - The present invention relates to the use of at least one compound of formula (III), (IV), (V) or (VI), in which p is an integer from 0 to 9; and R2 represents hydrogen, allyl, methylnaphthyl, benzyl, paramethoxybenzyl, or halogenoacetyl, for the preparation of a medicament for treating diseases such as tumors, cancer, viral disease, bacterial disease, fungal disease, disease of the immune system, auto-immune disease or disease linked to a deficiency in immunostimulation, in human beings and warm-blooded animals. The invention also relates to new products having a mannose or mannitol termination as well as a method for preparing them.07-11-2013
20130158252ENTEROSOLUBLE AND INTESTINAL-ENZYME-BIODEGRADABLE MATERIALS AND METHOD FOR PREPARING THE SAME - An enterosoluble and intestinal-enzyme-biodegradable material is provided. The enterosoluble and intestinal-enzyme-biodegradable material includes a modified amylopectin, wherein at least one of hydrogen atoms is replaced by —CO—(CH06-20-2013
20110313148AUTOMATED OLIGOSACCHARIDE SYNTHESIZER - The technical field of this invention is automated oligosaccharide synthesizers. There is a need in this field for more efficient oligosaccharide synthesizers. For example, the present invention is an apparatus for solid phase oligosaccharide synthesis, which includes a reaction vessel for holding a reaction mixture, such that the reaction vessel is equipped with a temperature control system, a donor vessel for holding a saccharide donor; an activation vessel for holding activator, a pump operably connected to a fluidic valve; an additional fluidic valve connected to the activation vessel, to the first fluidic valve via a first fluid line, and to the reaction vessel via a second fluid line, such that the activator or saccharide donor can be delivered via the second fluidic valve into the first fluid line and then through the second fluid line into the reaction vessel.12-22-2011
20080207895Methods for synthesizing polysaccharides - This invention provides methods for the synthesis of HS polysaccharides or oligosaccharides. This invention provides HS polysaccharides and oligosaccharides thus obtained, and polysaccharides and oligosaccharides with anticoagulant activity.08-28-2008
20120010399Biotechnological Production of Chondroitin - Chondroitin is produced by culturing a recombinant microorganism which is obtained by inactivation of a gene encoding an enzyme responsible for addition of fructose residues to the linear chondroitin polysaccharide in a microorganism producing a fructosylated derivative of chondroitin.01-12-2012

Patent applications in class Polysaccharides

Patent applications in all subclasses Polysaccharides