2 results about "Sonication" patented technology

The invention relates to an efficient bone powder preparing system which comprises a bearing base, bearing vertical columns, a high-pressure prefabricated bin, a low-temperature crushing bin and a conveying pipe. The bearing vertical columns are vertically connected with the upper surface of the bearing base, and the high-pressure prefabricated bin and the low-temperature crushing bin are slidablyconnected with the side surfaces of the bearing vertical columns through driving sliding rails. The high-pressure prefabricated bin mutually communicates with the low-temperature crushing bin throughthe conveying pipe. The high-pressure prefabricated bin comprises a tank body, a stirring device, an ultrasonic vibration mechanism, an irradiation heating device and high-temperature and high-pressure water vapor connecting end openings. The low-temperature crushing bin comprises a smashing cabin, crushing rollers, a bone powder grinding mechanism, an ultrasonic crushing mechanism, an ultrasonicvibration mechanism and a refrigerating unit. A using method of the efficient bone powder preparing system comprises three steps of bone material pretreatment, material conveying and low-temperaturepowder preparing. The production efficiency and quality of bone powder products can be effectively improved, and standardization of the bone powder preparing process can further be effectively improved.

The invention belongs to the technical field of food analysis, and relates to a method for rapidly determining streptomycin and dihydrostreptomycin in honey by a hydrophilic interaction chromatography-tandem mass spectrometry. The method is achieved by the following steps: (1) sample pretreatment: weighing a sample and adding an extracting solution, performing vortex mixing until the honey is completely dissolved, ultrasonically extracting, adjusting the volume with the extracting solution after taking out, uniformly shaking, filtering to obtain a filtrate to be ready for use, and purifying toobtain a solution to be detected; (2) preparation of a standard stock solution and a standard working solution; (3) preparation of a matrix matching working solution; (4) sample analysis and detection: qualitatively and quantitatively detecting and analyzing the solution to be detected by a hydrophilic interaction chromatography-triple quadrupole mass spectrometry; (5) drawing a standard curve, and then detecting and analyzing the solution to be detected by an ultra-high performance liquid chromatography-tandem mass spectrometer. The method provided by the invention has the advantages of shortening the inspection time, improving the detection efficiency, reducing the detection cost, avoiding the pollution of an ion pair reagent to the chromatogram and the mass spectrum, and having highersensitivity.