A New Flavanone as a Potent Antioxidant Isolated from Chromolaena odorata L. Leaves

Table 1

Antioxidant and α-glucosidase activities of the extracts and compounds from C. odorata.

Samples	Total phenolic contents (μg GAE/mg of sample) ± SD^1	DPPH; IC50 (μg/mL) ± SD^1	ABTS; IC50 (μg/mL) ± SD^1	α-Glucosidase inhibition; IC50 (μg/mL) ± SD^1
Samples (Extracts of C. odorata)
n-Hexane	14.65 ± 0.98	>319.46	>99.01	>1250
Dichloromethane	74.84 ± 2.11	90.83 ± 0.31	13.97 ± 0.22	>1250
Ethyl acetate	104.08 ± 3.87	57.26 ± 1.07	24.43 ± 0.09	779.54 ± 6.16
Methanol	57.11 ± 4.85	188.61 ± 3.31	46.80 ± 2.91	1329.31 ± 2.68
Water	27.49 ± 1.41	>319.46	21.37 ± 0.89	>1250
Samples (the compounds isolated from C. odorata)
Odoratenin	NS^2	NS^2	7.51 ± 1.57	>62.5
Isosakuranetin	NS^2	NS^2	>9.9	>312.5
Subscandenin	NS^2	NS^2	NS^2	NS^2
Standard
Gallic acid	as a standard curve	1.11 ± 0.42	NS^2	NS^2
Trolox	NS^2	NS^2	7.84 ± 0.45	NS^2
Acarbose	NS^2	NS^2	NS^2	7.67 ± 1.86

represent the means ± standard deviations for triplicate experiments.
studied.