The resonance light scattering (RLS) technique is developed from the1990s. For its advantages of simple operation, fast response, high sensitivity and it can be completed by ordinary fluorescence spectrophotometers, RLS technique has been arrested extensive attention by analysts. The RLS technique has been used in many fields of analytical research work, such as life sciences, [...]
PURPOSEThe quantitative analytical method of landiolol in human plasma is establishedbased on high performance liquid chromatography tandem mass spectrometry（HPLC-MS/MS）. The human plasma samples are collected during and aftercontinuous infusion of landiolol hydrochloride to the healthy Chinese volunteers andthe concentration of landiolol in human plasma is determined. The concentration-timecurves are drawed and the pharmacokinetic parameters are [...]
Objective:To extract and analysis of the polysaccharide content in Lethariella cladonioides. Study the lipid-lowering and protecting liver effects of Lethariella cladonioides extract and polysaccharide on nonalcoholic fatty liver disease (NAFLD) in rats and discussing its possible mechanisms.Methods:Part I:The polysaccharide was obtained with the water extraction and alcohol precipitation and dialysis method,proteins were removed by protease. [...]
Simethicone is a mixture of polydimethylsiloxane (PDMS) and silicon dioxide, with lower surface tension, better biological and chemical stability. This product was developed in the 70s of the last century by the German Berlin-Chemie AG. It has been used for more than 30 years in Europe, the United States, and other regions. Simethicone emulsion has [...]
In recent years, the researches of the determination of trace element are far and wide in the Chinese pharmacology. And the researches have contributed to the rocketing development with expansion of bio-inorganic chemistry and reformation of technology. It is significant to probe into Traditional Chinese Medicine (TCM)’s medicinal properties and mechanism of toxic and side-effect.The [...]
Objectives:The formulation of compound glycyrrhiza flavonoids cream was optimized to establish the best technology and quality control parameters. Glycyrrhiza flavonoids and ferulic acid were examined and high performance liquid chromatography was applied to determine ferulic acid. In addition, the mechanism of cream in the treatment of melasma was verified.Methods:The simplex reflected right angle method was [...]
Calculus bovis,cattle gallstones, is a precious Chinese herbal medicines. The main chemical composition of bile acids, deoxycholic acid, chenodeoxycholic acid, bilirubin, etc., with heat, phlegm,resuscitation, and detoxification effect. Calculus bovis cultivated by glucuronidase is a kinds of calculus bovis,as the raw material is fresh bile formation under the principle of natural calculus bovis, by enzyme [...]
Radix Angelicae Dahuricae, dried radix of Angelica dahurica (Fisch. ex Hoffm.) Benth. et Hook. f. and Angelica dahurica (Fisch. ex Hoffm.) Benth. et Hook. f. var. formosana (Boiss.) Shan et Yuan, belongs to Umbelliferae family. It have been frequently used for common acesodyne and cough, especially for headache and toothache for over 2000 years. Coumarins [...]
The subject researched the extraction-purification technology of hypericin in Hypericum attenuatum Choisy, and established a method of determination of hypericin in Hypericum attenuatum Choisy.In extraction technology process,We investigated the influence of four factors:density of ethanol、the quantity of extraction solvent, extraction time, extraction number of times to extraction technology.In the end, we determined the optimum extraction [...]
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