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MICROWAVE EXTRACTION AND HSCCC ISOLATION AND IDENTIFICATION OF CHLOROGENIC ACID IN Eucommia ulmoides LEAVES Separation and purification of bergapten from Notopterygii Rhizoma et Radix by silica gel column and high-speed counter-current chromatography Separation and purification of tanshinone from Salvia miltiorrhiza by combination of silica gel and high-speed counter-current chromatography Application of high-speed counter-current chromatography in separation and purification for alkaloids in natural products Application of high-speed counter-current chromatography in separation and purification for alkaloids in natural products Simultaneous isolation and purification of gallic acid and brevifolincarboxylic acid from Polygonum capitatum by high-speed counter-current chromatography Preparative separation of Gentiopicrin from Radix Gentianae by high-speed counter-current chromatography with macroporous resin Isolation and purification of gelsenicine and gelsevirine from Gelsemium elegans by high-speed counter-current chromatography Separation and purification of tanshinone from Salvia miltiorrhiza by combination of silica gel and high-speed counter-current chromatography Studies on HSCCC preparation technology of diterpenoidtanshinone and its antitumor activity in vitro Separation and purification of emodin-8-O-β-D-glucopyranoside from Polygoni Cuspidati Rhizoma et Radix by column and high-speed counter-current chromatography