Concentration

(µg/ml)

DPPH free radical scavenging activity

Phloretin (%)

Standard ascorbic acid (%)

20

19.09 ± 0.64

25.6 ± 2.04

40

33.63 ± 0.95

61.26 ± 4.90

60

67.27 ± 1.91

88.98 ± 7.11

80

86.81 ± 2.23

99.34 ± 7.94

IC₅₀ = 48.56 µg/ml

IC₅₀ = 34.91 µg/ml