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This work aimed to establish a systematic strategy to enrich and separate quercetin-3-O-β-d-glucuronide (Q3GA) from lotus leaves with macroporous resin and semi-preparative HPLC. Six resins were tested, and LX-5 was chosen as the appropriate resin for Q3GA based on the adsorption and desorption performances. After one-step enrichment, the content of Q3GA increased from 2.15% in crude extract to 52...
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