A new method for extracting oridonin from rubescens and processing extracts was studied.The solvent back-mixing method was used to extract oridonin,and the extract with higher target product concentration was obtained.The optimum conditions for the extraction of oridonin were found by the single factor method:the ratio of material to solvent was 1(g) :8(ml);the oridonin content contained in mixed solvent was 652 mg/L;temperature was 35℃;pH was 5.5.By adding water to change the polarity of the extracted solv...
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