The method of quality control of curcumin in Shibaweiheziliniao pills by RP-HPLC was established.A C₁₈ column was used with a mobile phase consisted of mixture of acetonitrile-4% glacial acetic acid (48:52) at flow rate of 0.8 mL/min^-1.And the UV detector wavelength was 430 nm.The linear range of curcumin was 0.01-0.20 μg (r = 0.9999).The average recovery was 99.08% (RSD = 1.44%, n = 6).This method is accurate, simple and rapid, and can be used in quality control of Shibaweiheziliniao pills.

Zhongguo Yaofang

Study on determination methods for dissolution of oxytetracycline tablets

Author: Zhu, Yonghong ; Wang, Yulian

The objective of this study is to establish a determination method for dissolution of oxytetracycline tablets.The content of oxytetracycline was determined by UV spectrophotometry at detection wavelength of 271 nm.Dissolution of oxytetracycline tablets was detected by slurry process using 0.01 mol/L^-1 hydrochloric solution as solvent.The linear range of oxytetracycline was 4-32 IU/mL^-1 (r = 0.999 9) with an average recovery of 100.1% (RSD = 0.65%).The dissolution in 45 min was all above 75%.Established method in this study can be used to determine dissolution of oxytetracycline tablets.

Zhongguo Yaoshi (Beijing, China)

Influence of ⁶⁰Co-γ ray radiant sterilization on the hydroxysafflor yellow A in carthamus flower and ethanol extracts from carthamus flower

Author: Tian, Xilian ; Mou, Xuewen

The radiant sterilization effect of ⁶⁰Co-γ ray and the influence on hydroxysafflor yellow A in carthamus flower and 25% ethanol extracts from carthamus flower were studied.Carthamus flower and 25% ethanol extracts from carthamus flower by 5 kGy and 10 kGy of radiation dosage were irradiated.The total amount of the miscellaneous bacterium and molds as well as the content of hydroxysafflor yellow A before and after irradiating were compared.After 5kGy of radiation, carthamus flower and ethanol extracts of carthamus flower could meet hygiene standardsAfter 5kGy of radiation, the content of hydroxysafflor yellow A in carthamus flower did not change dramatically; after 10kGy of radiation, hydroxysafflor yellow A decreased 34%.The hydroxysafflor yellow A in 25% ethanol extracts from carthamus flower decreased 44% and 71% after 5kGy and 10kGy of radiation, resp.The results of ⁶⁰Co-γ ray radiation sterilization are satisfactory, but not any herbs and preparations can be sterilized by this method.

100 Deals associated with Gansu Cheezheng Tibetan Medicine Co. Ltd.

100 Translational Medicine associated with Gansu Cheezheng Tibetan Medicine Co. Ltd.

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