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

Abstract

The antioxidant capacity of commonly consumed cucurbits vegetable was determined by the DPPH, FRAP, Fe 3+ reducing power, and hydrogen peroxide scavenging assay. The aqueous extract of Luffa cylindrica showed the highest value of phenolic content and antioxidant capacity based on FRAP, Fe 3+ reducing power, and hydrogen peroxide scavenging assay. However, Laginaria siceraria extract showed the highest flavonoid and DPPH scavenging activities among all three cucurbits used in this study. Phenolic content in aqueous extracts of Luffa cylindrica and Laginaria siceraria was almost equal. Cucurbita maxima exhibited the lowest phenolic, flavonoid content, and exhibited the lowest power of antioxidant scavenging. The antioxidant capacity of cucurbits was significantly correlated (P < 0.05) with the phenolic content of their extracts. The antioxidant capacity of Luffa cylindrica and Laginaria siceraria have also shown a significant correlation (P < 0.05).

Rice Bran Phytic Acid Induced Apoptosis Through Regulation of Bcl-2/Bax and p53 Genes in HepG2 Human Hepatocellular Carcinoma Cells

“…DPPH radicals scavenging of PA was estimated according to the previously describe method (Irshad et al, 2014). DPPH radicals absorbed maximum at 517nm, which disappears with reduction by an antioxidant compound (s).…”

Phytochemical Composition of Extracts Prepared from Dietary Cucurbits and their Cytoprotective Efficacies against Hydrogen Peroxide Induced Oxidative Stress in GI Cell-INT407

“…Various compounds containing benzene ring with or without phenyl group were identified in all three cucurbits. These were 4-Pyrimidinol, C 4 [27]. Our extract of Ls was found to contain essential fatty acids such as palmitic acid, stearic acid, linolenic acid, linoleic acid, and myristic acid (Table 3).…”

“…Dietary intervention of antioxidant rich diet is the most important strategy to modulate antioxidant defense system. Dietary cucurbits have been reported to contain adequate amount of secondary metabolites of excellent antioxidant activities [3][4][5].…”

“…Cucurbitaceae consists of nearly 100 genera and over 750 species [5][6][7][8]. Dietary intervention of these groups of plants can ameliorate various types of diseases through their prebiotics, modulation of proton pumping ATPase activity, antioxidant and immunomodulatory actions [1,2,4,9]. Despite of having immense potential to augment human health through their nutritional and medicinal effects [1][2][3][4][5][6][7], these group of plants have yet to be considered as potential therapeutic modalities by pharmaceutical industries and biomedical research funding agencies.…”

“…Cucurbits belong to Cucurbitaceae family and are rich sources of nutritional and medicinal compounds [1][2][3][4]. Cucurbitaceae consists of nearly 100 genera and over 750 species [5][6][7][8].…”