11 results about "Glycine solution" patented technology

The invention belongs to the technical field of pharmaceutical chemicals, and particularly relates to a method for preparing guanidinoacetic acid from glycine mother liquor. Based on a glycine-cyanamide method, a glycine solution containing iminodiacetic acid is used as one of reaction raw materials. When the method is used for preparing the guanidinoacetic acid, the glycine mother liquor can be directly used for preparing the guanidinoacetic acid, so that the mother liquor is directly treated, the separation step of the glycine mother liquor is omitted, and the process is simplified. Moreover, the method has an unexpected technical effect on the improvement of the yield of the guanidinoacetic acid, and the yield of the guanidinoacetic acid is improved by 6.2-6.4% compared with the prior art.

The utility model relates to an on-line monitor and system for evaluating the operation efficiency of a chlorine dioxide generator, a water sample detection module and a data analysis module are arranged in a body, and the water sample detection module is electrically connected with the data analysis module; the water sample detection module comprises a chlorine dioxide detection unit, a free chlorine detection unit and a plurality of linear peristaltic pumps; the chlorine dioxide and free chlorine detection unit is provided with a dilution tank, a detection tank, a reference tank and a spectrophotometer; the water sample detection module is provided with a buffer solution bottle, a DPD solution bottle and a glycine solution bottle which are used for containing the buffer solution, the DPD solution and the glycine solution respectively, and each solution bottle is connected with the corresponding linear peristaltic pump through a hose. The monitor disclosed by the utility model has two modes of health monitoring and abnormity diagnosis, and can continuously track and record the operation efficiency of the chlorine dioxide generator; the operation efficiency of the chlorine dioxide generator can be rapidly analyzed, problems and risks can be identified, an alarm is given, and the safety and stability of the disinfection process are improved.

The invention relates to the technical field of piezoelectric devices, in particular to a preparation method and device of beta-glycine nanocrystals, a piezoelectric composite material and application. The preparation method of the beta-glycine nanocrystal comprises the following steps: injecting a glycine solution into an ultrasonic atomization nozzle, spraying the glycine solution by the ultrasonic atomization nozzle, and depositing the glycine solution on a heating receiving platform to obtain the beta-glycine nanocrystal, and a potential difference exists between the ultrasonic atomization nozzle and the heating receiving platform. According to the method, the beta-glycine nanocrystals with relatively high purity and uniform crystal size can be formed by combining ultrasonic atomization and electrostatic deposition, so that the problem that the beta-glycine crystals are relatively difficult to form is solved.

Disclosed are a bio-piezoelectric layer manufacturing method, a bio-piezoelectric layer manufactured thereby, a piezoelectric power generation device manufacturing method, and a piezoelectric power generation device manufactured thereby. The present invention comprises the steps of: preparing a glycine solution by mixing a glycine powder and a second solvent into a first solvent; immersing a substrate in the glycine solution; and producing glycine crystals by pulling the substrate from the glycine solution.

This invention belongs to the fields of biomedicine, beauty, and personal care health technology, and discloses an oil-controlling, acne-reducing, and antimicrobial peptide co-amorphous assembly, its preparation method, and applications. The method includes: mixing an octyl glycine solution with an antimicrobial peptide solution, rotary evaporation, and drying to obtain an antimicrobial peptide co-amorphous compound; mixing a cyclodextrin compound with water, adding the antimicrobial peptide co-amorphous compound, heating the reaction, and spray drying to obtain the oil-controlling, acne-reducing, and antimicrobial peptide co-amorphous assembly. The oil-controlling, acne-reducing, and antimicrobial peptide co-amorphous assembly provided by this invention efficiently solubilizes octyl glycine through co-amorphous technology and nano-assembly, improving its solubility and bioavailability; simultaneously optimizing the transdermal absorption of the antimicrobial peptide and achieving targeted accumulation in the dermis; the broad-spectrum antibacterial and oil-controlling effects of octyl glycine can be organically combined with the targeted antibacterial effects of the antimicrobial peptide, providing a new strategy for oily and acne-prone skin care; cyclodextrin inclusion enhances stability; the process is mild, simple, environmentally friendly, and easy to industrialize.

The invention discloses a preparation method of a spherical glycine crystal, which comprises the following steps: cooling a glycine solution with the temperature of 70-80 DEG C and the concentration of 0.47-0.52 g / mL to 20-30 DEG C under the stirring condition with the stirring speed of 700-1200 rpm, and keeping the temperature for 1-4 hours to obtain spherical glycine; when the temperature is reduced to 20 to 30 DEG C, the density of the crystal slurry is 0.27 to 0.32 g / mL. Under the condition that no additive is used, water serves as a solvent for cooling crystallization, the crystallization mode in the crystallization process is changed, optimal control is achieved, the high-quality spherical glycine product with the complete crystal form is developed, and the good application prospect is achieved. The characteristic of a single particle of the obtained spherocrystal is 500-2000 microns, the HS roundness value is 0.91-1, the particle size distribution of the obtained spherocrystal is larger than or equal to 77%, the angle of repose is 29-35 degrees, and the caking rate is 1.11-7.68%.

The application belongs to the field of analysis and detection, and particularly relates to a method for detecting the content of directly absorbed exogenous glycine of microorganisms in soil, which comprises the following steps: firstly, mixing a double-labeled glycine solution with soil, adding sodium laureth sulfate and chloroform for fumigation, then extracting, deriving by hydrocarbonation reaction of ethyl bromoformate, and completing the extraction of glycine in microorganisms after stable layering by using sodium bicarbonate solution; and after the extraction is cracked by a stable isotope ratio mass spectrometer, exogenous glycine and original glycine in microorganisms are distinguished by characteristic ions to be determined. The method can effectively detect the content of directly absorbed exogenous glycine of microorganisms, is simple in operation, strong in specificity, has a good linear relationship, high sensitivity and accuracy, and effectively solves the problem that the content of directly absorbed exogenous glycine of microorganisms cannot be directly quantified. Thus, the direct utilization pathway of soil microorganisms to exogenous amino acid substances is quantitatively judged.

The invention discloses a formula of a leaching agent in preparation of light calcium carbonate by indirect mineralization of carbide slag, belongs to the technical field of production of light calcium carbonate, and aims to solve the problems of large reagent loss, low selectivity and the like of an ammonium salt leaching agent in the prior art. According to the technical scheme, the formula of the leaching agent comprises glycine, cane sugar, sodium citrate, tert-butyl alcohol and water. A two-stage leaching process is adopted, and in the first-stage leaching process, a glycine solution is adopted for leaching carbide slag; in the second-stage leaching, a mixed solution of cane sugar, sodium citrate and tert-butyl alcohol is adopted to leach the first-stage filter residues. According to the method, the total leaching efficiency of calcium is improved through two-stage leaching, a leaching agent is not prone to volatilization, small in loss, recyclable and high in calcium ion leaching selectivity, and high-purity light calcium carbonate can be prepared.

The application belongs to the field of analysis and detection, and particularly relates to a method for detecting the content of directly absorbed exogenous glycine of microorganisms in soil, which comprises the following steps: firstly, mixing a double-labeled glycine solution with soil, adding sodium laureth sulfate and chloroform for fumigation, then extracting, deriving by hydrocarbonation reaction of ethyl bromoformate, and completing the extraction of glycine in microorganisms after stable layering by using sodium bicarbonate solution; and after the extraction is cracked by a stable isotope ratio mass spectrometer, exogenous glycine and original glycine in microorganisms are distinguished by characteristic ions to be determined. The method can effectively detect the content of directly absorbed exogenous glycine of microorganisms, is simple in operation, strong in specificity, has a good linear relationship, high sensitivity and accuracy, and effectively solves the problem that the content of directly absorbed exogenous glycine of microorganisms cannot be directly quantified. Thus, the direct utilization pathway of soil microorganisms to exogenous amino acid substances is quantitatively judged.

The invention relates to the technical field of purification of amino acids, and particularly discloses a glycine purification method, which comprises the following steps: S1, preparation of a crude glycine solution: dissolving industrial-grade crude glycine to form the crude glycine solution; s2, phosphate coordination reaction: adding phosphate into the crude glycine solution for reaction to form a stable glycine-phosphate coordination compound precipitate; s3, coordination compound separation: carrying out solid-liquid separation on the reaction system in the step S2 to obtain a glycine-phosphate coordination compound and a supernatant containing impurities, and recovering by-products from the supernatant; s4, dissociation of the coordination compound and purification of glycine: dissolving the glycine-phosphate coordination compound, adjusting the pH value to be far away from an isoelectric point of glycine, filtering, adding an organic extraction agent, separating out an organic phase and a water phase liquid, and evaporating and crystallizing the organic phase to obtain purified glycine; and S5, phosphate recovery and circulation: concentrating the aqueous phase liquid, recovering phosphate, and circulating the phosphate for the coordination reaction in the step S2.

The application discloses a method for detecting deoxy-najinmycin in milk and dairy products. The method comprises the following steps: extracting a sample solution to be derivatized by using an extracting agent, adding a buffer solution and a derivatization reagent to the sample solution to be derivatized to perform derivatization, performing liquid chromatography test on the sample to be tested after the derivatization, and qualitatively and quantitatively determining the sample according to the retention time and external standard method. The content of deoxy-najinmycin in the sample to be tested is obtained according to the test result. The extracting agent is an acetonitrile aqueous solution, the buffer solution is a potassium borate buffer solution, and the derivatization reagent comprises a fluorenylmethyloxycarbonyl chloride acetonitrile solution, a glycine solution and an acetic acid aqueous solution. The precision, repeatability, recovery rate and standard curve linearity of the detection method meet the industry requirements. The method has good extraction effect, high sensitivity, stable and accurate results, and is simple to operate and convenient to popularize.