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The fruit of the olive tree (Olea europaea L.) cultivar 'Arbequina' has shown good productivity in the region of the Campaign, they have good potential of high quality oils extraction properties with appreciable sensory characteristics. Furthermore, the olives have a high content of pigments such as chlorophylls and carotenoids and phenolic compounds, which contribute to the antioxidant potential. The aim of this study was to determine the antioxidant potential and total phenolic content, total, 'a' and 'b' chlorophylls and total carotenoid of olive fruits cv. 'Arbequina', in natura, the Campaign region of the RS. Analyses were performed to determine the potential antioxidant, total phenolics, total carotenoids and total, 'a' and 'b' chlorophylls. Was found antioxidant activity of 80.95±1.79% inhibition of DPPH radical and levels of phenolic compounds of 100.10±1.63 mgGAE.g -1 , total carotenoid 311.66±0.99 mgβcaroteno.100g -1 and total chlorophylls, 'a' and 'b', respectively, 252,96±2,51 mg.100g -1 , 91,67±1,18 mg.100g -1 e 161,29±1,39 mg.100g -1 . PALAVRAS-CHAVE: Olea europaea L.; composto fenólico; carotenóide; clorofila.

Pigmentos cloroplásticos, fenóis totais e potencial antioxidante da azeitona (cv. ‘Arbequina’) cultivada na Região da Campanha do Rio Grande do Sul