Abstract

The antioxidant capacities of seven exotic and native fruits from Brazil were evaluated using DPPH•, ABTS•+ and FRAP assays, in addition to their total phenolic content and fatty acid composition. Murici and dovialis presented the highest total phenolic contents (243.42 and 205.98 mg GAE 100 g-1, respectively), and the highest antioxidant capacities by the FRAP assay (24.97 and 23.70 µmol Fe2+ g-1, respectively). In the DPPH• and ABTS•+ assays, dovialis presented the highest antioxidant capacity, 9.59 and 10.41 TE g-1, respectively. The highest alpha-linolenic and linoleic acid contents were found in siriguela (107.86 mg FA g-1 TL) and tomatinho do mato (215.50 mg FA g-1 TL), respectively. The principal component analysis (PCA) of fatty acids yielded three significant PCs, which accounted for 99.75% of the data set total variance. The PCA data of the antioxidant analyses yielded two significant PCs, which accounted for 97.00% of the total variance.

Highlights

  • Reactive oxygen species (ROS) represent the most important class of radical species generated in living systems

  • The aim of this study was to evaluate the determination of the antioxidant capacity of seven exotic and native fruits from Brazil by DPPH, ABTS+ and FRAP assays and their total phenolic content (TPC) and fatty acid composition using principal component analysis (PCA)

  • Comparing our results with results reported by Barreto et al.,[21] murici and dovialis presented higher TPC than buriti (Mauritia vinifera), banana (Musa x paradisiaca L.), marimari (Geoffroea striata (Willd.) Morong.) and egg fruit (Pouteria campechiana (Kunth) Baehni) other tropical fruits from Brazil

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Summary

Introduction

Reactive oxygen species (ROS) represent the most important class of radical species generated in living systems. A large number of native and exotic fruit species remains unexploited despite their potential interest to the agricultural industry and as sources of local income.[7]

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