[A novel approach to quality evaluation of root of Scutellaria baicalensis by DPPH free radical scavenging].


OBJECTIVE To develop a simple, reliable approach for evaluating the quality of Huangqin (Scutellaria baicalensis). METHOD To determine the DPPH free radical scavenging activity and assay of four bioactive components: baicalin, baicalein, wogonin and wogonin-7-O-glucuronide by HPLC. RESULT The correlative relationship between DPPH free radical scavenging… (More)


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