Table 6.

Effect of various trimethoxy flavones (TMF) on DPPH

Concentration of trimethoxy flavones (μM)	% inhibition of DPPH activity
	7,2′,3′ TMF	7,2′,4′ TMF	7,3′,4′ TMF	7,5,4′ TMF
20	30.18	39.82	29.82	28.12
30	39.46	43.44	38.44	38.54
60	51.24	56.68	50.18	49.35
120	63.82	64.12	62.48	62.84
240	84.24	83.32	80.34	83.16
IC 50 μM	58.82	48.62	59.91	61.21

Each value represents the mean of three observations. The IC 50 value was calculated by linear regression analysis The IC₅₀ of Ascorbic acid was 42.12 μM