Articulo Original / Original Article Chemical composition and antioxidant capacity of purified extracts of Prosopis pallida (Humb. & Bonpl. ex Willd.) Kunth (Fabaceae) fruits from Northern Peru

The purpose of this work was to evaluate the antioxidant capacity of Prosopis pallida (Fabaceae) fruits algarrobo, in addition to determine their main chemical components. Fruit purified extracts from the regions of Tumbes, Piura, Lambayeque, and La Libertad (Peru) were evaluated using infusion, decoction, and alcoholic extraction at concentrations of 45, 70 and 96%. To measure the antioxidant capacity of the extracts, the determination of total phenolics content was performed, followed by the antioxidant evaluation using DPPH, FRAP and ABTS. The chemical identification was carried out through UHPLC-UV-MS/MS. The results showed that the decoction of the sample from the region of La Libertad, as well as the ethanol extracts at 45% of the samples from Tumbes and Lambayeque presented greater antioxidant capacity. Moreover, ten major substances of these extracts were identified: nine phenolic derivatives (vicenin II as the main constituent of the extracts) and one diterpene (7oxodehydroabietic acid).

Automated summary

The purpose of this study was to evaluate the antioxidant capacity of Prosopis pallida (Fabaceae) fruits and identify their main chemical components. Fruit extracts from different regions in Peru were evaluated using infusion, decoction, and alcoholic extraction. The antioxidant capacity of the extracts was measured by determining total phenolics content and using DPPH, FRAP, and ABTS assays. The chemical identification was done using UHPLC-UV-MS/MS. The results showed that decoction of the sample from La Libertad region and ethanol extracts at 45% from Tumbes and Lambayeque regions had higher antioxidant capacity. Ten major substances were identified, including nine phenolic derivatives and one diterpene.