HPLC assay of matrine and oxymatrine in total alkaloids from Sophora flavescens Ait.;

The method of ultrasonic extraction which had the advantages,such as saving time,lower energy expenditure,high extraction rate and so on,was compared with the method of reflux extraction,when extracting the total alkaloids in Zanthoxylum nitidum.

Objective To select the optimum purifying process of total alkaloids in Sophora flavescens by different eluents on cation exchange resin.

Determination of the content of total alkaloid in Nao Mai Tong Recipe;

Determination of the content of total alkaloid in Huperzia serrata by UV spectrophotometric;

Research on the Method for Quantitatively Determining Total Alkaloid in the Effective Fraction of the Extract of Kushen Decoction;

A new method for rapid determining the total base number (TBN) of internal combustion engine oil by voltammetric techniques was described, the result determined by voltammetric technique was compared with that by standard method.

This paper briefs the application of total base number surveying to the whole course of equipment lubrication management.

Study on separation and purification of total alkaloids from Herba Ephedrae and Flos Daturae by macroporous adsorption resin;

Determination of berberine hydrochloride and total alkaloids in compound Er-xian decoction;

Study on the solvents extracting the total alkaloids from Uncaria macrophylla Wall and the purity of Rhynchophylline;

Study on the supercritical CO_2 extraction of alkaloids from sophora flavescens ait;

Toxicity of Chenopodium ambrosioides alkaloids to Musca domestica and influence on insecticides susceptibility;

The extraction of alkaloids from the stem of Solanum melongena Linn.