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‘Tucum-do-cerrado’ ( Bactris setosa ) is an edible fruit from the Brazilian ‘Cerrado’ biome marked by a high antioxidant potential and polyphenol content when compared to other fruits from the same biome. Its antioxidant activity is higher in the peel than in the pulp. Ethanolic and aqueous peel extracts were analyzed by the ferric reducing antioxidant power (FRAP) assay. We also investigated the aqueous peel extract for its antioxidant mechanism and isolated some of its compounds using high-performance liquid chromatography. Among the extracts tested, the aqueous peel extract exhibited the highest FRAP values, with a predominant free radical scavenger activity. The isolated compounds were identified as two catechins, a cyanidin, a peonidin, and a quercetin. Testing the antioxidant potential of the isolated compounds using the 2-deoxyribose degradation assay revealed that catechin and quercetin showed the highest antioxidant activity. Thus, our results advance the identification of ‘tucum-do-cerrado’ compounds with antioxidant activity.

Compounds of tucum-do-cerrado ( Bactris setosa ) fruit with antioxidant activity