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  • Title: [Study on preparation and quantity determination of Scrophularia ningpoensis dispensing granules].
    Author: Niu Z, Wang R, Jing Y, Shang M, Cai S.
    Journal: Zhongguo Zhong Yao Za Zhi; 2009 Jan; 34(1):39-42. PubMed ID: 19382447.
    Abstract:
    OBJECTIVE: To develop the preparation method and to determine the quantity of effective constituents of Scrophularia ningpoensis dispensing granules. METHOD: Nine experiments were carried out through L9 (3(4)) orthogonal design. The contents of harpagoside and cinnamic acid were determined by HPLC method. RESULT: The optimal extraction process was as follows: the slices were soaked in water in the ratio of 1:8 for 0.5 h, then they were decocted for 2 h. For the second time, 6 times of water was added and sustained for 1.5 h. Harpagoside and cinnamic acid were linear within the ranges of 0.0776-1.552 microg (r=0.9999) and 0.01446-0.4339 microg (r=0.9999), respectively. The average recoveries were 100.4% (RSD 1.98%, n=6) and 98.27% (RSD1.35%, n=6), respectively. Ten batches of granules were determined. CONCLUSION: The extraction process is scientific and the determination method is suitable for quality control of Scrophularia ningpoensis dispensing granules.
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