title: Physicochemical Changes and Antioxidant Activity of Juice, Skin, Pellicle and Seed of Pomegranate (cv. Mollar de Elche) at Different Stages of Ripening.
abstract: In the present work, we investigate how the degree of ripeness (low, low-medium, medium and medium-high) affects the physical and compositional changes, as well as antioxidant properties of pomegranate fruit (cv. Mollar de Elche). The skin, pellicle, seed and juice were analysed. The fruit mass increased and the fruit skin became reddish (highera* and lowerh*) as the fruit ripening progressed. The lowest concentrations of flavonoids and hydrolysable tannins were recorded in skin and pellicles at medium-high maturity stage, which explains the decrease in the total phenols and reducing power during ripening of pomegranate. On the contrary, the highest concentration of flavonoids (165 mg of quercetin equivalents per 100 mL of juice) was determined in the juice at the most advanced ripening stage, concomitant with the highest total phenols (1695 mg of gallic acid equivalents per 100 mL of juice). Higher DPPH scavenging activity and an increase in the reducing power of juice were also observed during ripening. The trend of the above-mentioned properties allowed describing the fruit development and maturity.
authors.forename: Luana
authors.initials: L
authors.lastname: Fernandes
authors.forename: José Alberto C
authors.initials: JA
authors.lastname: Pereira
authors.affiliation: Department of Agronomy, Polytechnic University of Valencia, Camino de Vera s/n, ES-46022 Valencia, Spain.
authors.forename: Isabel
authors.initials: I
authors.lastname: Lopéz-Cortés
authors.affiliation: Department of Agronomy, Polytechnic University of Valencia, Camino de Vera s/n, ES-46022 Valencia, Spain.
authors.forename: Domingo M
authors.initials: DM
authors.lastname: Salazar
authors.forename: Elsa C D
authors.initials: EC
authors.lastname: Ramalhosa
keywords: Mollar de Elche cultivar; antioxidant activity; fruit constituents; physicochemical properties; ripening stages