title: Antioxidant activity of various extracts of selected gourd vegetables.
abstract: Study was conducted to evaluate the antioxidative activity of methanolic (ME), ethanolic (EE) and butanolic extracts (BE) of selected gourd vegetables. The antioxidant activity was investigated using different assays namely ferric thiocyanate test (FTC), thiobarbituric acid test (TBA), ferric reducing antioxidant power (FRAP) and DPPH free radicals scavenging test. A densitometric HPTLC analysis was performed for the analysis of phenolic acids and flavonoids. Different extracts of the selected gourd vegetables revealed different antioxidant activity. Different extracts of Lagenaria siceraria, Momordica charantia and Luffa cylindrica revealed significantly higher (p < 0.05) concentrations of total phenols, flavonids, tannins and carotenoids content and also the antioxidant activity in comparison to remaining vegetable extracts. Correlation studies indicated that FRAP test best described the antioxidant activity of phenols, flavonoids and carotenoids (r = 0.854, 0.692 and 0.915 respectively). HPTLC profiles revealed the presence of maximum number of phenolic acids and flavonoids in L. siceraria and M. charantia.
authors.affiliation: Department of Food Technology, Maharshi Dayanand University, Rohtak, Haryana 124001 India.
authors.forename: Baljeet S
authors.initials: BS
authors.lastname: Yadav
authors.affiliation: Department of Food Technology, Maharshi Dayanand University, Rohtak, Haryana 124001 India.
authors.forename: Roshanlal
authors.initials: R
authors.lastname: Yadav
authors.affiliation: Department of Food Technology, Maharshi Dayanand University, Rohtak, Haryana 124001 India.
authors.forename: Ritika B
authors.initials: RB
authors.lastname: Yadav
authors.affiliation: Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana 124001 India.
authors.forename: Munish
authors.initials: M
authors.lastname: Garg
keywords: Antioxidant activity; Carotenoids; Phenolic compounds; Vegetable crops