Table 4. DPPH radical scavenging activity of Platycodon grandiflorum flower extract with different ratio of edible ethanol ethanol in extraction solvent

(%)

Ethanol content of extraction solvent (%) Sample concentration ( μg/mL)

0.5 1 2 5 10

10 13.84±0.17^1)a2)B3) 22.47±0.46^bB 37.54±0.41^cB 73.22±0.31^dB 89.11±0.05^eB

30 12.11±0.31^aA 18.96±0.28^bA 31.48±0.63^cA 62.95±1.09^dA 84.93±0.29^eA

60 15.81±0.06^aC 26.01±1.07^bC 45.62±0.66^cC 76.79±0.63^dC 89.95±0.20^eC

Positive control Ascorbic acid concentration ( μg/mL)

1.6 3.1 6.3 12.5 25.0

Activity (%) 5.22±0.40 10.89±0.37 23.61±0.03 47.00±0.17 88.33±0.44

¹⁾All values are mean±SD (n=4).
^2)a-eMeans with different superscript within the same row are significantly different by Duncan's multiple range test (p<0.05).
^3)A-CMeans with different superscript within the same column are significantly different by Duncan's multiple range test (p<0.05).

Ethanol content of extraction solvent (%)	Sample concentration ( μg/mL)
Ethanol content of extraction solvent (%)	0.5	1	2	5	10
10	13.84±0.17^1)a2)B3)	22.47±0.46^bB	37.54±0.41^cB	73.22±0.31^dB	89.11±0.05^eB
30	12.11±0.31^aA	18.96±0.28^bA	31.48±0.63^cA	62.95±1.09^dA	84.93±0.29^eA
60	15.81±0.06^aC	26.01±1.07^bC	45.62±0.66^cC	76.79±0.63^dC	89.95±0.20^eC
Positive control	Ascorbic acid concentration ( μg/mL)
Positive control	1.6	3.1	6.3	12.5	25.0
Activity (%)	5.22±0.40	10.89±0.37	23.61±0.03	47.00±0.17	88.33±0.44