Pharmacognostical and Phytochemical Studies and Biological Activity of Curculigo latifolia Plant Organs for Natural Skin-Whitening Compound Candidate

Table 4

Antioxidant activity of hexane, ethyl acetate, and ethanol extracts of the leaves, stems, and roots of C. latifolia plants.

Extract of C. latifolia	Inhibition concentration of 50% (µg/mL)		µmol GAEAC/g extract
	DPPH• assay	NO• assay	CUPRAC assay
Hexane leaf extract	370.74 ± 0.51	88.38 ± 0.29	87.17 ± 5.65^bc
Hexane stem extract	437.07 ± 0.59	143.32 ± 0.31	102.52 ± 12.98^ac
Hexane root extract	389.16 ± 1.81	372.65 ± 0.58	93.18 ± 6.2^ab
Ethyl acetate leaf extract	82.01 ± 0.61^e	25.51 ± 0.58	390.42 ± 14.49
Ethyl acetate stem extract	81.22 ± 0.43^d	123.47 ± 0.52	298.61 ± 3.05
Ethyl acetate root extract	28.30 ± 0.55	92.08 ± 0.65	236.29 ± 5.01^hi
Ethanol leaf extract	94.85 ± 0.52	22.57 ± 0.74	165.01 ± 1.88
Ethanol stem extract	41.19 ± 0.32	45.65 ± 0.77	234.58 ± 14.17^fi
Ethanol root extract	20.42 ± 0.33	84.60 ± 0.56	232.08 ± 5.61^fh
Quercetin	4.76 ± 0.09	3.59 ± 0.072	—

Note. Significant difference between samples (, n = 3, post hoc test LSD). Alphabet differences indicate no significant difference between samples (, n = 3, post hoc test LSD).