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
Summary
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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