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Determination of Ester-series Alkaloid and Total Alkaloid in Complex Prescription Monkshood Plaster

DU Qian1,PAN Jin-huo2,YAN Guo-jun2(1.Pharmaceutical Department,Xuzhou Medical College,Xuzhou 221004,China;2.College of Pharmacology,Nanjing University of Chinese Medicine,Nanjing 210046,China)  
ObjectiveTo establish the assay of ester-series alkaloid and total alkaloid in Complex Prescription Monkshood Plaster.MethodsFerric Hydroxamic acid―Ferric Perchloric acid method was used to determine the content of ester-series alkaloid,and acid dye colorimetry was used to determine the content of total alkaloid in Complex Prescription Monkshood plaster.ResultsA good linearity for ester-series alkaloid was ranged from 6.4 to 64 mg/ml;the average recovery was 99.47% with RSD 2.07%(n=5).Total alkaloid also showed a good linear correlation in the range of 1.94~15.52 mg/ml.The average recovery was 102.06% and RSD was 1.31%(n=5).ConclusionThe result is accurate and the reproducibility is good.These methods can be used for quality control of ester-series alkaloid and total alkaloid.
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