ABSTRACT
Objective:To optimize the ethanol precipitation technique for Fufang Shenqi soft capsules. Methods: An orthogonal design was used to optimize the technique with the relative density of the concentrated solution, ethanol concentration, standing time, temperature of ethanol precipitation as the influencing factors and the yield of dry extract and the content of total polysaccharides as the indices. Results:The best ethanol precipitation technique was as follows:the relative density of the concentrated solution was 1. 10, 95% ethanol was used to obtain 60% ethanol concentration, and the standing time was 48 h under the temperature of 10-30℃. Con-clusion:The optimized ethanol precipitation technique for Fufang Shenqi soft capsules is simple and practicable, and suitable for prac-tical production.
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OBJECTIVE:To investigate the method for preparation and quality control of carbamide peroxide METHODS:Carbamide was mixed with hydrogen peroxide at -5℃～-10℃ to form 1∶1 molecular compound The white crystallization was obtained after drying under the condition of low temperature It was used as solidifying oxygen molecular RESULTS:The content of hydrogen peroxide in the carbamide peroxide was 34 90%,which was up to 97 00% of the label content CONCLU_SION:The preparation technology of the carbamide peroxide is simple Its quality control and clinical use are easy
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OBJECTIVE:To observe the effects of adding chitosan in the hydrotubation on increasing conception rates.METHODS:184tubal infertility cases were divided into2groups at random,the95cases in the treatment group were injected with0.3%chitosan solution10ml after the routine hydrotubation;89cases in the control group were only given the conven-tional hydrotubation.RESULTS:The conception rates for the treatment group and the control group were40.7%and24.4%respectively within6months after hydrotubation(P