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749 results about "Metronidazole" patented technology

Metronidazole is an antibiotic that is used to treat a wide variety of infections.

Method for treating metronidazole waste water

The invention relates to a method for treating metronidazole waste water, which comprises the following steps of: concentrating the metronidazole waste water into 1/3-1/5 of total amount, and crystallizing and filtering the concentrated metronidazole waste water at 45-100 DEG C to obtain anhydrous sodium sulfate and sodium formate; adjusting the PH to 3-6 by using sulfuric acid or formic acid, and precipitating 2-methy-5-nitro imidazole; concentrating the filter liquid to anhydrous sticky state, dissolving organic matter by using methanol or ethanol, and filtering the solution to obtain anhydrous sodium sulfate and sodium formate; merging the sodium formate and the anhydrous sodium sulfate obtained in two times, successively adding formic acid and sulfuric acid, and recovering the formic acid to obtain anhydrous sodium sulfate; and rectifying and separating the organic mixture extract of methanol or ethanol to obtain methanol or ethanol and glycol. The method for treating metronidazole waste water provided by the invention is simple and convenient to operate, the content of polluting organic matter and inorganic slats in the metronidazole waste water can be obviously reduced, environmental pollution can be preveneted, various kinds of useful organic matter and inorganic matter can be recovered, raw materials are saved, and the production cost is lowered.
Owner:HUBEI HONGYUAN PHARMA

Detection method for simultaneously measuring residue of nitroimidazoles drugs in royal jelly

The invention relates to a method for measuring the residue of nitroimidazoles drugs in royal jelly, in particular to a method for measuring the residue of nitroimidazoles drugs, such as 1-(2-hydroxyethyl)-2-hydroxy-methyl-5-nitroimidazol (MNZOH), 2-methyl-5-nitroimidazole, 2-hydroxymethyl-1-methyl-5-nitroimidazole (DMZOH / HMMNI), metronidazole (MNZ), dimetridazole (DMZ), ronidazole (RNZ), 5-chloro-1-methyl-4-nitroimidazole, 5-nitrobenzimidazole, 2-(2'-hydroxyisopropyl)-1-methyl-5-nitroimidazol (IPZOH), 2-isopropyl-1-methyl-5-nitroimidazol (Ipronidazole, IPZ) and the like, in the royal jelly by the liquid chromatography-mass spectrometry / mass spectrometer (LC-MS / MS). The method comprises the following steps: precipitating protein by methanol; extracting; further carrying out the purification using HLB (hydrophilic-lipophilic balance) and C18 solid-phase extraction (SPE) columns; and measuring the residue by LC-MS / MS. The invention has the characteristics of high specificity, high sensitivity and accurate results, and allows for the measurement of both the nitroimidazoles original drugs and the metabolites thereof; the lower limit of detection (10 mug / kg) in the method meets the existing requirements for the residue of nitroimidazoles drugs in the royal jelly at home and aboard; the recovery rate ranges from 70.7% to 105.0%; and the relative standard deviation (RSD) is lower than 12.7%.
Owner:THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU

Compound emulsifiable paste for treating acne and preparation method thereof

The invention relates to compound emulsifiable paste for treating acne and a preparation method thereof, in particular to a medicament for treating acne and a preparation method thereof. The compound emulsifiable paste solves the problems of long treatment course and skin oxidation, dim skin and formation of color spots in the healing process in the conventional medicament for treating the acne. The compound emulsifiable paste is prepared from clindamycin hydrochloride, metronidazole, vitamin A, vitamin C, an emulsifying agent, stearic acid, albolene, glycerol monostearate, lanolinum, glycerol and purifying water. The preparation method comprises the following steps of: adding the vitamin A into uniform solution prepared from the stearic acid, the albolene, the glycerol monostearate and the lanolinum to obtain an oil phase; dissolving the glycerol and the emulsifying agent into the purifying water, adding the clindamycin hydrochloride, the metronidazole and the vitamin C, and stirring uniformly to obtain a aqueous phase; and adding the oil phase into the aqueous phase, stirring, homogenizing and standing the mixture to obtain the compound emulsifiable paste for treating the acne. The treatment period of the compound emulsifiable paste is between 14 and 24 days, skin is bright and clean after healing, and the compound emulsifiable paste can treat the acne, seborrheic dermatitis, acne rosacea and folliculitis.
Owner:哈尔滨乐泰生物科技有限公司

Method for treating waste water from production of metronidazole

The invention relates to a method for treating waste water from production of metronidazole. The steps of the method are as follows: adding alkali in metronidazole process waste water to adjust pH value and after evaporation, sending the metronidazole process waste water to a waste water adjusting tank; allowing imidazole process waste water and nitration process waste water to enter the waste water adjusting tank respectively through a grating; after mixture as well as water-quality and water-quantity adjustment by the waste water adjusting tank, sending the imidazole process waste water and the nitration process waste water to an electrolyzer for electrochemical catalysis water treatment; adding lime milk in the effluent of the electrolyzer to adjust pH value, sequentially removing ammonia-nitrogen by a neutralization aeration tank, adding flocculant, separating by a coagulative precipitation tank, and allowing supernatant water to enter a facultative tank for anaerobic degradation; and conducting oxic degradation by a biomembrane aeration tank and precipitation by a secondary precipitation tank on the effluent of the facultative tank for standardized discharge. Adopting a electrochemical catalysis water treatment technology for pretreating waste water, the method effectively eliminates the biotoxicity of the waste water, lowers the pollutant concentration of the waste water and greatly improves the biodegradability of the waste water, thus laying foundation for standardized biochemical treatment. The method is simple in technology and convenient in operation.
Owner:黄冈银河阿迪药业有限公司 +1

Composition for treating chicken proventriculitis and preparation method thereof

The invention discloses a composition for treating chicken proventriculitis and a preparation method thereof, which aim to provide a composition for treating the infection of chicken proventriculitis by addressing both symptoms and root causes and a preparation method thereof. The composition comprises the following components in percentage by weight: 1 to 10 percent of florfenicol, 5 to 15 percent of metronidazole, 1 to 6 percent of ranitidine hydrochloride, 2 to 15 percent of taurine and the balance of glucosum anhydricum. In the composition, aiming at pathogeny, the florfenicol and the metronidazole which serve as antimicrobial medicaments are adopted to kill anaerobic bacteria and helicobacter pylori effectively, reduce the occurrence probability of the tolerance of pathogenic bacteria and improve the sensitivity; the ranitidine hydrochloride inhibits the gastric acid effect and reduces the injury of gastric acid to inflamed glandular stomachs; and the taurine has the obvious effect of inflammation resistance, has no irritation on gastrointestinal tracts, and has the effect of diminishing inflammation quickly. Aiming at the pathogeny and diseases, the medicaments are combined, so that the composition can address both symptoms and root causes effectively on antipathogen and clinical symptoms thereof and treat the chicken proventriculitis effectively.
Owner:TIANJIN SHENGJI GRP CO LTD
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