67 results about "Citrate ion" patented technology

The present invention pertains to chitosan beads consisting of chitosan cross-linked with citrate ions. The present invention furthermore pertains to a filler comprising such chitosan-citrate beads. In one embodiment of the instant invention the filler is a dermal filler. In one further embodiment of the present invention the dermal filler is for the treatment of wrinkles and / or folds. In another embodiment of the instant invention the filler is for use in the treatment of a medical condition. The filler provided in the present invention may further comprise one or more active pharmaceutical ingredients. Further, the present invention pertains to a process for preparing the filler as claimed herein.

The invention provides a method for doping rare earth lanthanum in nano molybdenum powder, and belongs to the field of rare earth materials. The method includes the following steps that (1) ammonium paramolybdate, rare earth lanthanum nitrate and complexing agent citric acid are doped in a solution mode, the pH value of the solution is adjusted through HNO3 and NH3 water to be 1-3, complexing is performed on citrate ions, molybdate ions and rare earth ions to obtain a stable compound, water bath is performed on the solution at the temperature of 70-90 DEG C to obtain transparent faint yellow sol, and the transparent faint yellow sol is dried at the temperature of 100-120 DEG C to obtain xerogel; (2) the xerogel is sintered for 6 hours at the temperature of 560 DEG C, then in a four-tube sintering reduction furnace, two-step reduction is performed with hydrogen as a reducing agent to obtain doped MoO3 powder and doped Mo powder respectively, the reduction temperatures of the two-step reduction are 540 DEG C and 980 DEG C respectively, the doped nano rare earth molybdenum powder which is round and normal in particle and even in distribution is prepared, the size of doping phase is below 100nm, and the size of doped molybdenum powder particles is 300-500nm. According to the method, the nano molybdenum powder doped with the earth lanthanum evenly is prepared, and meanwhile chemical reaction sediments in the liquid-liquid doping process are eliminated.

This invention relates to electrolyte formulations and methods of use thereof to treat or prevent dehydration and taste fatigue. The electrolyte formulation of the invention addresses the needs of a broad population, particularly the needs of an older population. The electrolyte formulation of this invention comprises a dietary fiber source, such as Acacia Gum, a sodium ion source, a potassium ion source, a calcium ion source, a chloride ion source, and a citrate ion source.

The invention belongs to the field of medical in-vitro diagnosis, and particularly relates to an anticoagulant for a vacuum blood collection tube. The anticoagulant is prepared from the following rawmaterials in percentage by mass: 2.5 to 3.5 percent of sodium citrate, 0.1 to 0.3 percent of citric acid, 0.1 to 0.2 percent of ascorbic acid, 0.5 to 1 percent of biquaternary ammonium salt and 95.6 to 96.8 percent of water. Sodium citrate, citric acid and ascorbic acid form a buffer solution, and meanwhile, ascorbic acid and nitrogen can prevent citrate ions from being oxidized, so that the stability of the concentration of the citrate ions in the liquid is ensured, and the accuracy of the erythrocyte sedimentation rate measurement is improved.

The invention relates to a process for the preparation of a product comprising one or more nanoparticles of calcium phosphate (CaP-NP) with negative surface charge having a ζ-potential in the range from −41.0 mV to −27.0 mV comprising the steps of: a) maintaining a mixture having a pH in the range from 7 to 10 and comprising an aqueous solution of calcium, an aqueous solution of phosphate and a solution of citrate ions at a temperature in the range from 20° C. to 40° C. for a time in the range from 30 seconds to 10 minutes; b) removing non-reacted ions from the solution of step a), thus obtaining a suspension of one or more nanoparticles of calcium phosphate (CaP-NP); c) recovering the product of one or more nanoparticles of calcium phosphate (CaP-NP) from the suspension of step b). In an advantageous embodiment, the process of the invention provides, in the mixture of step a), also an aqueous solution of one or more therapeutic / diagnostic compounds. The product of the invention may be used as a vehicle for one or more diagnostic / therapeutic compounds for the treatment of cardiovascular diseases through inhalation administration.

The invention provides an application of citrate ions and iron ions to inhibition of RNA viruses, particularly an application of an active ingredient to be used for preparing pharmaceutical composition for inhibiting the RNA viruses. The active ingredient at least comprises a substance A providing citrate ions C5H7O5COO<-> and a substance B providing iron ions in the molar ratio of the citrate ions to the iron ions being 1:8-8:1. The compounded active ingredient can effectively inhibit multiple RNA viruses, such as enterovirus, influenza virus, HIV and the like, when the citrate ions and the iron ions are applied in a specific proportion, the produced effect has certain correlation with the proportion. Besides, the substances providing the citrate ions and the iron ions are not limited, so that the compounded active ingredient is very easy to prepare, simple and cheap and has bright application prospect.

A system and method of enhancing the antimicrobial and biofilm-resistant efficacy of surfaces that have cationic polyelectrolytes nonleachably bound thereto in order to impart antimicrobial activity to the surface. The system for enhancing antimicrobial efficacy involves brushing, dipping, wiping, spraying, or storing the surface in a solution containing citrate ion. The method involves treatment of the surface with a solution which enhances the antimicrobial and biofilm-resistant efficacy of the surface, and which prevents a loss of the antimicrobial properties of the surface which may occur over time. Preferably, the enhancement agent is citrate ion and the cationic polyelectrolyte is poly(diallyldimethylammonium chloride), also known as polyDADMAC. The system is particularly beneficial for surfaces of articles such as contact lenses.

The disclosure provides oral care compositions comprising zinc ions and citrate ions with molar ratios which unexpectedly high zinc bioavailability, together with methods of preparing and using the same.

Provided is a compound and composition capable of increasing a sugar content in a fruit by a simple method, without being restricted by a cultivation area of a plant or a climatic environment. The agent for increasing a sugar content in a fruit of a plant comprises a compound represented by the formula MX as an active ingredient, wherein M represents alkali metal ion or alkaline earth metal ion, and X represents carbonate ion, hydrogen carbonate ion, acetate ion, citrate ion, succinate ion, phosphate ion, hydrogen phosphate ion, or pyrophosphate ion.

Provided is a compound and composition capable of increasing a sugar content in a fruit by a simple method, without being restricted by a cultivation area of a plant or a climatic environment. The agent for increasing a sugar content in a fruit of a plant comprises a compound represented by the formula MX as an active ingredient, wherein M represents alkali metal ion or alkaline earth metal ion, and X represents carbonate ion, hydrogen carbonate ion, acetate ion, citrate ion, succinate ion, phosphate ion, hydrogen phosphate ion, or pyrophosphate ion.

The invention discloses a Platinum nanomaterials with four kinds of simulated enzyme activities and their preparation methods, which are Citric acid-modified platinum nanomaterials were prepared by reducing chloroplatinic acid with sodium borohydride using citrate ion as a modifier. The preparation of platinum nanomaterials is simple and fast, the particle size is small, and the aqueous solution has high dispersibility and stability. The obtained platinum nanomaterial simultaneously has four kinds of simulated enzyme activities, including peroxidase, oxidase, catalase and superoxide dismutase. The four simulated enzyme activities of platinum nanomaterials can be tuned by the concentration of citrate ions used in the preparation process.