ABSTRACT
Objective: To research the best processing method for ginger pinellia by orthogonal tests.Methods: The orthogonal tests included the soaking time, boiling water and cooking time as the influencing factors, an HPLC method was used for the determination of 4 nucleosides (uridine, guanosine, adenosine, inosine), and the alum limit and extract content were also studied.The results were evaluated by multi index comprehensive weighted score to optimize the processing technology of ginger pinellia.Results: The best processing technology of ginger pinellia was as follows: soaked for 60 hours, the proportion of boiling water and pinellia tuber was 15:1, and boiled for about 5 h.Conclusion: The optimum processing technology of ginger pinellia is reasonable, reliable and reproducible, which can be used as the reference for the processing standardization of Chinese crude drugs.
ABSTRACT
Objective:To study the effect and underlying mechanism of sulfur-fumigation and water-soaking on total ash of Di-oscoreae Rhizoma, find the key factor( s) affecting the total ash of Dioscoreae Rhizoma, and explore the rationality of ash limits of Di-oscoreae Rhizoma described in Chinese Pharmacopoeia. Methods:Dioscoreae Rhizoma was respectively dealt with sulfur-fumigation and water-soaking. The changes in total ash content of Dioscoreae Rhizoma was detected by the ash determination methods for total ash and SO2 described in the pharmacopoeia, and then the ash content change of inorganic salts was used to study the mechanism. Results:Sulfur-fumigation could slightly reduce the total ash content of Dioscoreae Rhizoma, while significantly reduce the ash content of calcium oxalate and calcium sulfate with the reduction degree of 7. 20% and 9. 90%, respectively. Calcium phosphate and calcium chloride were slightly affected by sulfur-fumigation, and the results indicated that the effect of sulfur-fumigation on ash content was mainly real-ized by increasing the decomposition rate of calcium oxalate and calcium sulfate. Water-soaking could decline the ash content of Di-oscoreae Rhizoma, and the phenomenon was common in the rhizome medicinal materials. The influence of water-soaking on total ash was more significant than that of sulfur fumigation. Conclusion:Sulfur-fumigation can reduce the total ash content of Dioscoreae Rhizo-ma by increasing the decomposition rate of calcium oxalate and calcium sulfate, however, the effect is mild and the process isn't the key influencing factor in the total ash content of Dioscoreae Rhizoma. During the preparation of Dioscoreae Rhizoma medicinal slices, water-soaking can cause the great loss of water-soluble mineral salts, such as Cl-, C2 O4 2-, NO3 - and SO4 2-, which leads to the reduction of total ash content, therefore, water-soaking is the key influencing factor in the total ash content of Dioscoreae Rhizoma.
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Objective:To establish the quality standard for Yunüjian granules. Methods:Rehmannia glutinosa, rhizoma anemar-rhenae and achyranthes in the granules were identified by TLC. The HPLC method was adopted. A SunfireTM C18 column (250 mm × 4. 6 mm, 5 μm) was used with the mobile phase consisting of acetonitrile-0. 1% acetic acid solution(16∶84) at the column tempera-ture of 30 ℃. The flow rate was 1. 0 ml·min-1 ,the detection wavelength was 334nm, and the imjection volume was 10 μl. Results:The TLC spots of verbascoside, and sarsasapogenin in rhizoma anemarrhenae and cyasterone in achyranthes were quite clear with good seperation. The linear range of verbascoside was within the range of 0.163-0.612 μg(r=0.999 9), and the average recovery was 101. 3%(RSD=2. 7%,n=6). Conclusion:The method is simple, reliable and accurate, and can be applied in the quality control of Ynnüjian granules.