Comparative Phytochemical Constituents and Antioxidant Activity of Wild and Cultivated Alepidea amatymbica Eckl & Zeyh

Table 2

IC ₅₀ values of acetone, methanol, and water fractions of wild and cultivated of A. amatymbica rhizomes and standards.

Activity samples	Wild A. amatymbica										Cultivated A. amatymbica
	A		B		C		D		E		A		B		C		D		E
	IC50^a	^b	IC50^a	^b	IC50^a	^b	IC50^a	^b	IC50^a	^b	IC50^a	^b	IC50^a	^b	IC50^a	^b	IC50^a	^b	IC50^a	^b
Acetone extract	0.0795	0.9972	0.5594	0.9694	0.00062	0.9191		0.9422	0.00060	0.994	0.10483	0.998	0.59143	0.9947		0.9631		0.963	NA	NA
Water extract	0.03767	0.9928	2.266992	0.9887	0.00106	0.952	0.00531	0.9489	0.00196	0.956	0.19487	0.9983	NA	0.9981	0.03123	0.952	0.0009	0.096	0.0023	0.983
Methanol extract	0.03795	0.9722	0.099	0.9348		0.9876		0.9987	0.00041	0.99	0.03826	0.9972	0.738276	0.995	0.0249	0.9876		0.988	0.0072	0.89
Vitamin C	0.01258	0.9547	0.658756	0.9971			0.6534	0.825	0.0156	0.87	0.01258	0.9547	0.658756	0.9971			0.6534	0.825	0.0156	0.87
BHT	2.7057	0.9972	NA	0.9918	0.03768	0.9981		0.975	1.5255	0.964	2.7057	0.9972	NA	0.9918	0.03768	0.9981		0.975	1.5255	0.964

A: ferric reducing power; B: hydrogen peroxide scavenging activity; C: ABTS scavenging activity; D: DPPH scavenging activity; E: nitric oxide scavenging activity. ^aIC₅₀ is defined as the concentration (mg/mL) sufficient to obtain 50% of maximum scavenging capacity. ^bCoefficient of determination. Values obtained from regression lines with 95% confidence level. NA indicates no activity. Greater than the lowest concentration of evaluated drugs. : coefficient of determination; values obtained from regression lines with 95% confidence level.