8 results about "Sorbitol solution" patented technology

To provide a mouthwash mixed with povidone iodine (PVPI), containing PVPI in a higher concentration than a conventional product (7%), and to provide a method for producing the same.SOLUTION: A method for producing a povidone-iodine-containing mouthwash containing povidone iodine in an amount of 10% by mass or more based on the total amount (100% by mass) of the mouthwash, the method comprising the steps of: 2.14 4.28, A method for producing a gargle, comprising the steps of: dispersing PVPI in PG to obtain a dispersion; and mixing the dispersion with a mixed solution a1 in which at least one selected from the group consisting of ethanol, glycerin, D-sorbitol solution (70%), saccharin sodium, and 1-menthol is dissolved in water, or a mixed solution a1 in which potassium iodine is further dissolved in the mixed solution a2.SELECTED DRAWING: None

The invention relates to the technical field of protoplast preparation, in particular to a preparation method of protoplast of sclerotium rolfsii. The method comprises the following steps: carrying out enzymolysis on sclerotium rolfsii by adopting protoplast enzymatic hydrolysate; a Miracloth filter membrane is adopted for filtering, a container for collecting filtrate is placed on ice, and a precooled 0.6 M sorbitol solution is used for flushing; centrifuging the collected filtrate, collecting precipitates, cleaning the precipitates by using a precooled 0.6 M sorbitol solution to remove enzymatic hydrolysate, and then carrying out resuspension centrifugation by using STC to collect precipitates so as to obtain protoplasts; according to the characteristics of sclerotium rolfsii, a corresponding enzymolysis system is established, the enzymolysis condition is mild and easy to control, the obtained protoplast is complete and stable in form and high in yield, and the quantity of the protoplast reaches up to 1 * 10 < 8 > / mL.

The invention discloses a viscoelastic compound for stabilizing an inner bound flap in a macular pore surgery, the viscoelastic compound comprises a viscoelastic agent and a penetrant, the viscoelastic agent is any one or a compound of more than two of hyaluronic acid, hydroxypropyl methyl cellulose, methyl cellulose and cross-linked HA; the penetrant is a solution of glucose, cane sugar, mannitol or sorbitol with the mass concentration of 5-20%. According to the application, the specific viscoelastic agent and the penetrant are uniformly fused to form the viscoelastic compound, the viscoelastic compound is accurately coated on a macular pore area in a minimally invasive vitreous surgery to cover the whole pore area, and the viscoelastic compound can provide immediate mechanical fixation, so that the turnover ILM flap is stable and does not move in the operation process, and the operation efficiency is improved. The dissection closing rate of the complex macular hole and postoperative visual function recovery are improved.

The present application relates to the technical field of microbial fermentation culture, and specifically discloses a method for fermentatively producing glutamic acid, a culture medium and application thereof. The method for fermentatively producing glutamic acid adds catechol to seed culture medium and fermentation culture medium, starts to add flow-adding liquid one after complete consumption of the base sugar, and starts to add flow-adding liquid two when the acid concentration in the fermentation broth reaches 140-165 g / L; the flow-adding liquid one is a glucose solution containing propyl gallate, the concentration of glucose in the flow-adding liquid one is 68-72%, and the concentration of propyl gallate is 10-50 mg / 100 g; the residual sugar concentration in the fermentation broth is controlled to be less than 5 g / L by adding the flow-adding liquid one; and the flow-adding liquid two is a sorbitol solution, and the sorbitol concentration in the fermentation broth is controlled to be 0.5-4 g / L by adding the flow-adding liquid two. The method can improve the fermentation conversion rate and is suitable for industrial production.

The invention relates to the technical field of silver nanocubes, in particular to a silver nanocube and a preparation method and application thereof.The preparation method comprises the following steps that sorbitol is dissolved in water, heated and stirred to be evenly dispersed, and a sorbitol solution is obtained; dissolving soluble silver salt in water, stirring at normal temperature in a dark place until the soluble silver salt is uniformly dispersed to obtain a soluble silver salt solution, and standing in a dark place for later use; mixing the sorbitol solution with the soluble silver salt solution, heating and stirring until the mixture is uniformly mixed to obtain a mixed solution; centrifuging, removing supernate, adding water, centrifuging again, repeating the centrifuging operation, and drying the obtained solid, so as to obtain the silver nanocubes. By adopting the steps, complex hydrothermal reaction and additional addition of a cross-linking agent and a surfactant are not needed, the reaction conditions are simple, the cost is relatively low, and the obtained silver nanocubes consist of a plurality of fine particles and are uniformly distributed.

The present application provides a kind of sorbitol continuous dehydration preparation isosorbide method, belong to the preparation field of bio-based chemicals. Using solvent containing dimethyl sulfoxide, sulfolane and other compounds to dissolve sorbitol, increase the mobility of sorbitol solution, and then realize the continuous dehydration of sorbitol to prepare isosorbide. The specific steps are as follows: the solid acid catalyst is loaded into the fixed bed reactor, the preheated sorbitol solution is continuously passed through the catalyst layer for dehydration reaction, and the mixture after reaction is separated to obtain isosorbide. The present application adds polar aprotic solvent to improve the flowability of the reaction solution during the dehydration reaction stage, realizes continuous reaction, and the dehydration reaction temperature is low, and the generated pyrolysis black substance is greatly reduced; aromatic hydrocarbon is used to extract high-boiling organic solvent in the product separation stage, and the separation effect is good and the energy consumption is low; the method has important application prospect.

This invention discloses a method for establishing a high-efficiency regeneration system for *Pyrus pyrifolia* leaves, belonging to the field of plant tissue culture technology. The method includes: spreading a layer of sorbitol solution on the surface of a culture medium; inoculating *Pyrus pyrifolia* seedlings into the medium and placing them in a dark environment for etiolation treatment; taking etiolated leaves from the *Pyrus pyrifolia* seedlings and inoculating them in a regeneration medium for dark culture, then transferring them to light for further culture to produce adventitious buds; after the adventitious buds reach the target length, cutting off their lateral buds and placing them on a subculture medium to obtain regenerated seedlings. This invention, by adding sorbitol solution before dark treatment, can significantly shorten the time to obtain etiolated material to 7 days, and the etiolated plants are in better condition after three weeks; furthermore, by placing *Pyrus pyrifolia* tissue culture seedlings in a dark environment for dark culture, the physiological state of the tissue culture seedlings is altered, and the obtained etiolated leaves are inoculated into the regeneration medium, improving the regeneration efficiency, and the material acquisition is not affected by the season.

The utility model relates to the technical field of separation devices, and discloses a sorbitol separation tank which comprises a separation tank body, a transparent window is arranged on the outer wall of the separation tank body, a discharge pipe is installed at the bottom of the separation tank body in a communicated mode, a mixing and cleaning assembly is arranged in the separation tank body, and a separation and disassembly assembly is arranged at the bottom of the discharge pipe. By arranging the mixing and cleaning assembly, mixing and cleaning can be carried out, a sorbitol solution and a catalyst enter from the feeding pipe, the first motor is started to drive the rotating rod to rotate, the mixing plate carries out slow stirring, impurities in the solution are evenly dispersed, the separation efficiency is improved, the second motor is started to drive the discharging plate to rotate, materials can descend, and during cleaning, the materials can be cleaned. The pump in the water bucket is started, water enters the water storage ring through the corrugated pipe, spraying cleaning is conducted through the water spraying opening, the electric telescopic rod is started to drive the water storage ring to ascend and descend for washing, the interior of equipment is kept clean, the service life of the equipment is prolonged, the separation effect is improved, and therefore the mixed cleaning effect is achieved.