Fig. 11From: The antityrosinase and antioxidant activities of flavonoids dominated by the number and location of phenolic hydroxyl groupsa Agarose gel electrophoretic patterns of supercoiled pBR322 plasmid DNA converted into the open circular by AAPH in the presence or absence of samples (10 μM). b The effects of samples on supercoiled pBR322 plasmid DNAconverted into the open circular by AAPH in the presence or absence of samples(10 μM). Lane 1: control (native pBR322 DNA, without AAPH); Lane 2: AAPH; Lane 3: AAPH + isoeugenol; Lane 4: AAPH + shikonin; Lane 5: AAPH + baicalein; Lane 6: AAPH + rosmarinic acid; Lane 7: AAPH + dihydromyricetin. The density of the supercoiled DNA form was quantified by Quantity One (Bio-Rad). Data are the average of three determinations; C open circular, S supercoil, AAPH 2,2′-azobis(2-methylpropionamidine)dihydrochlorideBack to article page