Abstract: The present invention relates to a crosslinked carboxyalkyl chitosan forming a matrix, compositions comprising same, a method for manufacturing same, and the different applications thereof, in particular in the field of therapy, rheumatology, ophthalmology, aesthetic medicine, plastic surgery, internal surgery, dermatology, gynecology or cosmetics. The invention relates in particular to a matrix comprising at least one carboxyalkyl chitosan having glucosamine units, N-acetylglucosamine units and glucosamine units substituted with a carboxyalkyl group, the carboxyalkyl chitosan having a degree of acetylation ranging from 40% to 80%, expressed as the number of moles of N-acetyl groups relative to the number of moles of total glucosamine units, the carboxyalkyl chitosan being crosslinked by covalent bonds between the chains of carboxyalkyl chitosan.

Abstract: The present invention relates to hydrogel microbeads comprising at least water, chitosan, at least one polyphosphate compound, water being present at a concentration of at least 85% by mass of hydrogel, said microbeads having an average number diameter ranging from 100 to 900 ?m. The present invention also relates to their manufacturing method and their uses, in particular in pharmaceutical compositions or medical devices, more particularly for treating an articular pathology.

Abstract: The invention relates to a chitosan as a micronized powder, to its use for controlling certain yeasts, such as Brettanomyces, and to a method for treating a liquid food. The invention in particular relates to a water-insoluble chitosan as a micronized powder, for which the grain size is comprised between 5 and 50 microns, and to its use in the treatment of liquid foods and/or for controlling Brettanomyces.

Abstract: The invention relates to a chitosan as a micronized powder, to its use for controlling certain yeasts, such as Brettanomyces, and to a method for treating a liquid food. The invention in particular relates to a water-insoluble chitosan as a micronized powder, for which the grain size is comprised between 5 and 50 microns, and to its use in the treatment of liquid foods and/or for controlling Brettanomyces.

Abstract: The invention relates to a prosthesis for promoting the in vivo reconstruction of a hollow organ or of a portion of a hollow organ, characterized in that it comprises: a biodegradable hollow tubular support membrane comprising at least one biocompatible and biodegradable polymer material, said support membrane being constituted of a porous outer layer and an essentially non-porous inner layer; and a material of living biological origin at the outer surface, and/or within at least one portion of the porous layer of said support member, and/or over the surface of the essentially non-porous layer facing the porous layer, said material of biological origin being chosen in order to allow the in vivo reconstruction of said organ or of said organ portion. The invention relates to a method for producing such a prosthesis and the medical applications thereof, especially for reconstructing at least one portion of a hollow tubular organ, in particular an esophagus.

Abstract: In a first aspect, the present invention relates to a method for isolating cell wall derivatives from fungal or yeast biomass. According to this method, chitin polymers or chitin-glucan copolymers can be obtained. In another aspect, the invention relates to a method for preparing chitosan from chitin. The invention further relates to chitin polymers, chitin-glucan polymers and chitosan polymers obtainable by the methods according to the invention. Moreover, the invention relates to the use of chitin polymers, chitin-glucan copolymers or chitosan polymers obtainable by the method according to the present invention in medical, pharmaceutical, agricultural, nutraceutical, food, textile, cosmetic, industrial and/or environmental applications, and in particular of chitin-glucan copolymers used as a technological additive for treating a food-grade liquid or in orally administered compositions.

Abstract: In a first aspect, the present invention relates to a method for isolating cell wall derivatives from fungal or yeast biomass. According to this method, chitin polymers or chitin-glucan copolymers can be obtained. In another aspect, the invention relates to a method for preparing chitosan from chitin. The invention further relates to chitin polymers, chitin-glucan polymers and chitosan polymers obtainable by the methods according to the invention. Moreover, the invention relates to the use of chitin polymers, chitin-glucan copolymers or chitosan polymers obtainable by the method according to the present invention in medical, pharmaceutical, agricultural, nutraceutical, food, textile, cosmetic, industrial and/or environmental applications, and in particular of chitin-glucan copolymers used as a technological additive for treating a food-grade liquid or in orally administered compositions.

Abstract: The present invention relates to a chitin-glucan copolymer in the form of micrometric particles. The present invention in particular provides a composition containing a chitin-glucan copolymer in the form of micrometric particles for the preparation of cosmetic compositions, and in particular dermatological or dermocosmetic compositions. In particular, the present invention relates to a cosmetic composition for face or body care, such as hydrating, firming or smoothing the skin, and exercising an anti-aging effect, including an anti-wrinkle effect. The purpose of the invention is also to provide a porous material that can for example be used in tissue engineering or cell culture, or that can be used as a material in the cosmetics or pharmaceutical industry.

Abstract: In a first aspect, the present invention relates to a method for isolating cell wall derivatives from fungal or yeast biomass. According to this method, chitin polymers or chitin-glucan copolymers can be obtained. In another aspect, the invention relates to a method for preparing chitosan from chitin. The invention further relates to chitin polymers, chitin-glucan polymers and chitosan polymers obtainable by the methods according to the invention. Moreover, the invention relates to the use of chitin polymers, chitin-glucan copolymers or chitosan polymers obtainable by the method according to the present invention in medical, pharmaceutical, agricultural, nutraceutical, food, textile, cosmetic, industrial and/or environmental applications.

Abstract: In a first aspect, the present invention relates to a method for isolating cell wall derivatives from fungal or yeast biomass. According to this method, chitin polymers or chitin-glucan copolymers can be obtained. In another aspect, the invention relates to a method for preparing chitosan from chitin. The invention further relates to chitin polymers, chitin-glucan polymers and chitosan polymers obtainable by the methods according to the invention. Moreover, the invention relates to the use of chitin polymers, chitin-glucan copolymers or chitosan polymers obtainable by the method according to the present invention in medical, pharmaceutical, agricultural, nutraceutical, food, textile, cosmetic, industrial and/or environmental applications, and in particular of chitin-glucan copolymers used as a technological additive for treating a food-grade liquid or in orally administered compositions.

Abstract: In a first aspect, the present invention relates to a method for isolating cell wall derivatives from fungal or yeast biomass. According to this method, chitin polymers or chitin-glucan copolymers can be obtained. In another aspect, the invention relates to a method for preparing chitosan from chitin. The invention further relates to chitin polymers, chitin-glucan polymers and chitosan polymers obtainable by the methods according to the invention. Moreover, the invention relates to the use of chitin polymers, chitin-glucan copolymers or chitosan polymers obtainable by the method according to the present invention in medical, pharmaceutical, agricultural, nutraceutical, food, textile, cosmetic, industrial and/or environmental applications.

Abstract: Process for depositing by electrografting a strong adherent polymer coating onto an electrically conductive surface comprising the step of electrochemical grafting of an active monomer for forming a primer coating P onto the surface and having as general formula: X0 (meth)acrylate wherein X is either part of a preformed polymer or is an intermediate agent for polyaddition reaction or is an anchoring group for attachment of a molecule having at least one complementary reactive group. Such process allows formation of new primer by one-step electro-grafting of a macromonomer. Such process also allows further modification of an initial electrografted polymer to increase the coating thickness by the grafting-from technique. Such process also allows to graft onto the primer coating compounds like functional polymer, peptide, protein, oligonucleotide, dyes, drugs, anti-bacterian compounds.