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DPPH radical scavenging activity of BHT and Korean plum extracts. 1)Ultrasonification extracts at 60℃. 2)Shaking extracts at 60℃. 3)The BHT is used at the concentration of 25 µg/mL (n = 3). Different superscript in each column indicates the significant differences in the mean at P < 0.05.
