Study on the Quality Standards of Water Extracts from Eupatorium lindley-anum DC
OBJECTIVE Prepare the water extracts of Eupatorium lindleyanum DC and carry out the study of quality standard with extract,extractum and content as index.METHODS According to the relevant regulations in the quality control and standard formulation technical requirements of traditional Chinese medicine formula granules,10 batches of water extracts from Eupatorium lindleyanum DC from different origins were prepared,and the extraction rate,content,and characteristic spectrum determination methods of the water extracts were studied.RESULTS Ac-cording to the measurement of 10 batches of water extracts from Eupatorium lindleyanum DC standard decoction,the extraction rate was 14.20%to 19.60%,the ethanol-soluble extractum ranged from 21.50%to 34.61%.the transfer rate of hyperoside ranged from 23.99%to 35.74%,a characteristic chromatograms analysis was established,and four peaks were identified from ten common peaks.CONCLUSION This method has good precision,stability,and re-peatability,and can objectively reflect the quality of the water extract of Eupatorium lindleyanum DC,laying a founda-tion for subsequent research on Eupatorium lindleyanum DC.
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