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Extraction techniques using microwave-assisted extraction (MAE), extraction at room temperature (ERT), heat reflux extraction, ultrasonic extraction and Soxhlet extraction were evaluated for the extraction of tanshinones (Cryptotanshinone, Tanshinone I and Tanshinone IIA) from Salvia miltiorrhiza bunge. The extracts were analyzed by high performance liquid chromatography (HPLC) without any treatment...
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