33 results about "Lambda-Carrageenan" patented technology

A stabilizer system comprising blends of cellulose, lambda-carrageenan, and guar gum. Food products and beverages, such as energy drinks, are prepared with the stabilizer blends.

The present invention relates to pharmaceutical compositions based on carrageenan as an active ingredient, for use as a medicament in the prophylactic or therapeutic treatment of allergic conditions or diseases, with the proviso that the carrageenan comprises iota- and/or kappa-carrageenan and is substantially free of lambda carrageenan. Typically, the invention relates to liquid formulations, gels and dry powder compositions comprising iota- and/or kappa-carrageenan and, optionally, one or more non-carrageenan therapeutic agents for administration to the respiratory tract, the gastrointestinal tract or the eyes. The compositions of the invention have been found to be efficacious in the prevention and treatment of type I allergies and additionally, may exert an adjuvant function upon combined mucosal administration with non-carrageenan therapeutic agents.

A dentifrice composition which comprises (A) heavy calcium carbonate having a mean particle diameter of 5 to 15 m, (B) water-insoluble inorganic granules having a collapse strength of 10 to 200g/granule, a mean particle diameter of 50 to 150 m, and a difference of 100 m or below between 90% particle diameter and mean particle diameter, and (C) a water-soluble polymeric material comprising at least one member selected from Group (a) and at least one member selected from Group (b) at a (b)/(a) mass ratio of 0.25 to 3, Group (a): sodium alginate, sodium carboxymethylcellulose, methylcellulose, hydroxyethylcellulose, Xanthomonas campestris, lambda-carrageenan, and straight-chain sodium polyacrylate, and Group (b): gellan gum, agar, kappa-carrageenan, iota-carrageenan, gelatin, pectin, and crosslinked sodium polyacrylate, and which has a total content of (a) and (b) of 0.5 to 1.5% by mass based on the whole of the composition.

The invention discloses an application of lambda-carrageenan oligosaccharide to preparation of an anti-rabies virus drug. Experiments prove that the lambda-carrageenan oligosaccharide is low in cytotoxicity so that rabies viruses of various strains can be inhibited on various types of cells and inhibition effect is provided to each stage of the rabies viruses invading the cells; and particularly in the stage after virus adsorption, namely, 12 hours after the cells are infected by the viruses, the lambda-carrageenan oligosaccharide is still capable of remarkably decreasing the rabies virus amount in the cells. According to above discovery, the lambda-carrageenan oligosaccharide can be used as a low-cost effective wound treating agent to replace the anti-rabies virus immune globulin, and has the advantages of decreasing the viruses at the wound part to the greatest extent and reducing the rabies morbidity.

The invention discloses a method for preparing lambda-carrageenan oligosaccharide by carrying out bacterial degradation on lambda-carrageenan degrading bacteria. The method is characterized by comprising the following steps of: firstly, cultivating the lambda-carrageenan degrading bacteria which can generate extracellular lambda-carrageenan degrading enzymes, subsequently directly adding the bacterium liquid into a reaction liquid which contains 0.5-2.0% by weight of the lambda-carrageenan according to a volume ratio of 1:(0.8-1.2), reacting for 1-5 days at 20-30 DEG C under 100-150rpm, centrifuging so as to obtain supernate-containing oligosaccharide, adsorbing the oligosaccharide by using an activated carbon column, desorbing by using 20-40(v)% ethanol, concentrating, freezing and drying so as to obtain the lambda-carrageenan oligosaccharide of which the polymerization degree ranges from 2 to 8. The method has the advantages of being high in preparation process, high in yield, high in stability, and applicable to industrial production, and lambda-carrageenan oligosaccharide of which the polymerization degree ranges from 2 to 8 can be rapidly produced in large scale, so that the method has large application prospects in production of lambda-carrageenan oligosaccharide.

A liquid formulation comprising protein and lambda carrageenan, wherein the lambda carrageenan comprises lambda carrageenan from at least one seaweed of the taxonomic order Halymeniales.

The invention belongs to the field of biological medicine, and relates to application of algal polysaccharides to a vaccine adjuvant. The invention aims at solving the technical problem that the ideal adjuvant for vaccine preparation, particularly for tumor vaccine preparation is difficult to obtain. In order to solve the technical scheme, the invention provides a new purpose of Lambda-carrageenans to preparation of an immunologic adjuvant. The Lambda-carrageenans are disaccharide units formed by connecting 2-sulfated galactose and 2, 6-sulfated galactose through beta-1, 4 keys, and each disaccharide unit is provided with polysaccharides of three sulfating sites. The tumor vaccine prepared by using the Lambda-carrageenans as the adjuvant can obviously enhance the serum antibody titers of the antigen, and can reduce the tumor formation rate of mice, the obvious anti-tumor effect is achieved, and the new selection is provided for the development and the application of the vaccine.

The present invention provides pasty or liquid compositions for applications on mucous membranes of cavities easily reached by hand, having a bio-adhesive prolonged effect or release. The composition includes a polysaccharide matrix agent selected from the group constituting of lambda carrageenan and iota carrageenan. The matrix allows the in situ formation of a matrix film with a reinforced bio-adhesive capacity due to complexation reactions between the polysaccharide matrix agent and the components of the local secretions of the mucous membranes. The compositions can also include a lecithin compound as a reinforcing agent of the intrinsic bio-adhesive properties of the polysaccharide matrix agent. The composition can further include at least one of (a) a hydration medium for the polysaccharide matrix agent, (b) a lecithin co-solvent allowing the dispersion of the micellar lecithin solution in the hydration medium, (c) an additive or additives, and (d) at least one active ingredient.

The invention discloses a preparation method of stable nanogel polyferose and belongs to the field of preparation of polyferose. According to the preparation method, a novel nanoscale gel microsphereis prepared based on specific binding of lambda-carrageenan iron and ferric ion, the polyferose nanogel microsphere prepared through a stirring-dripping method shows good dispersion stability and significantly reduces the cytotoxicity of the iron ions; meanwhile, surface hydrophobic modification is further performed on the gel microsphere to improve the storage stability of polyferose powder, anddue to hydrolytic stability of the gel microsphere for a gastrointestinal tract, a theoretical support and a technical guidance are provided for development of a novel iron reinforcing agent; and theprepared lambda-car-Fe3+ complex can isolate moisture and inhibit browning, thus the storage stability and the hydrolytic stability for the gastrointestinal tract are greatly improved, and the stablenanogel polyferose as a safe iron reinforcing agent has great application potentials.

This invention provides a carrageenan mixture comprising about 60% to about 95% by weight of iota-carrageenans and about 5% to about 25% by weight of lambda-carrageenans, which is useful as an ingredient of a cosmetic formulation such as a fully natural hair styling gel being free from synthetic polymers.

A object of the present invention is to provide a novel system whereby an enteral nutrient or an enriched liquid food can be solidified so that it can be easily administered within a short period of time without liguefying in the body to thereby lighten a care-giver's burden in tube feeding such as gastrostomic feeding. As the results of studies, it is found out that such a nutrient or an enriched liquid food can be quickly thickened or solidified at a temperature of 40° C. or below by using a starch adhesive, which contains as the main component sodium iota-carrageenan, sodium kappa-carrageenan, sodium lambda-carrageenan or a mixture thereof, without dissolving the starch adhesive by heating. Further, it was confirmed that it is an administration method almost free from water liberation when the solidified product was administered from a syringe, thus the present invention was completed. That is, the use of the above carrageenan as a starch adhesive (a semi-solidifying agent) makes it possible to produce the desired semi-solidified enteral nutrient as described above.

Water soluble uncrosslinked polysaccharides may be fluid loss control agents for viscoelastic surfactant (VES) fluids used for stimulation (e.g. fracturing) or well completion in hydrocarbon recovery operations. The VES fluid may further include proppant or gravel, if it is intended for use as a fracturing fluid or a gravel packing fluid, although such uses do not require that the fluid contain proppant or gravel. The water soluble uncrosslinked polysac not charide fluid loss control agents may include, but not be limited to guar gum and derivatives thereof; cellulose and derivatives thereof; propylene glycol alginate; salts (e.g. sodium, potassium, and calcium salts) of iota, kappa, and lambda carrageenan; agar-agar; xanthan gum; and the like; and/or mixtures thereof. The fluid loss control agent may be added to the aqueous viscoelastic treating fluid prior to VES addition, and/or at the same time and/or after the VES is added.

The invention belongs to the field of drug preparations and in particular relates to a povidone-iodine solution as well as a preparation method and an application thereof. The povidone-iodine solution disclosed by the invention is coated with chitosan and lambda-carrageenan outside povidone-iodine, can stably exist in a water body, has long acting time and has low requirements on conditions such as the pH value of the water body; the povidone-iodine solution is capable of slowly releasing molecular iodine so as to achieve a long-acting antibacterial effect; the method for preparing the povidone-iodine solution in the invention is simple, easy to operate and applicable to industrial production; and the povidone-iodine solution can be used for aquaculture and has high aquatic product survival rate.

The invention discloses a high-performance aerated block which is characterized by comprising the following components in parts by weight: 15-20 parts of lime, 15-20 parts of cement, 60-65 parts of tailing powder, 2-3 parts of gypsum, 0.5-0.6 part of aluminum powder and 0.03-0.05 part of additive. The additive is prepared from the following components in parts by weight: 2-5 parts of rosin-based hyperbranched epoxy resin, 4-8 parts of volcanic ash, 0.5-1.5 parts of carbon fiber and 0.3-0.6 part of lambda carrageenan. The invention further provides a preparation method of the high-performance aerated block. The high-performance aerated block disclosed by the invention is excellent in comprehensive performance, more excellent in mechanical property, higher in performance stability and waterseepage prevention performance, lower in drying shrinkage value and safer and more environment-friendly to use.