Preparation technology of high purity erigeron breviscapus raw drug
A technology for preparing scutellarin and its preparation technology, which is applied in the field of raw material medicine preparation technology, can solve the problems of improving the purity of scutellarin and eliminating side effects that have not been reported, and achieves easy industrial production, reduced toxicity, and solution to instability sexual effect
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[0021] Weigh 1000g of commercially available breviscapine crude drug, add 5 times the weight of water, adjust the pH value to 7 with 25% sodium pyrophosphate test solution, completely dissolve, filter, add 8 times the amount of acetone to the filtrate to precipitate, stir while adding, Make the precipitation complete, let stand for 10 hours, filter, add acetone to wash three times, then move the precipitate to another container, add 5 times the amount of 30% acetone, stir well, add 20% hydrochloric acid to adjust the pH to 1-2 Set it aside for 10 hours, filter with suction, wash with water until neutral, wash once with ethanol, and dry to obtain refined scutellarin. The content of scutellarin by HPLC analysis is 99.2888%, as shown in the attached figure.
[0022] Detection method: chromatographic conditions and system suitability test (using octadecyl bonded silica gel as filler: methanol-0.1% phosphoric acid solution (40:60) as mobile phase; detection wavelength is 335nm. The ...
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