Antioxidant Capacity and Phenolic Content of the Aqueous Extract of Commonly Consumed Cucurbits

Figures & data

Table 1  Scavenging activity of the aqueous cucurbit extracts

Samples	EC50(DPPH) (mg/ml)	EC50(H2O2) (mg/ml)	FRAP (1 mg/ml)
L. siceraria	2.63 ± 0.21	0.708 ± 0.031	90.35 ± 0.43
L. cylindrica	3.02 ± 0.27	0.692 ± 0.028	103.19 ± 0.41
C. maxima	5.91 ± 0.24	1.111 ± 0.042	38.91 ± 0.69
Values are expressed as mean ± standard deviation (n = 3). Ascorbic acid was used as a standard. EC50 value is defined as the amount of antioxidant necessary to decrease the radical concentration by 50%. FRAP values represent as equivalent of mmol Fe(II)/L.

Figure 1 (a, c, d) Represents the scavenging effect of aqueous extracts of cucurbits on DPPH radicals, reducing power, and H₂O₂ scavenging capacity. Ascorbic acid was used as standard. (b) Represents the total phenolic and flavanoids content in the aqueous cucurbits extract. TPC are expressed as gallic acid equivalents, whereas flavonoid contents are expressed as quercetin equivalent. The values are expressed as mean ± standard deviation (n = 3).