Resumo

ZAPATA, Luz M et al. Optimización de la extracción de antocianinas de arándanos. Cienc. docencia tecnol. [online]. 2014, n.49, pp.166-192. ISSN 1851-1716.

There is a current interest in anthocyanins owing to the potential benefits both in the health area as an antioxidant and as a natural food colorant in the food industry. Anthocyanins may be extracted from vegetables and fruits, blueberries being a case in point. The influence of the variables of anthocyanin solid-liquid extraction process from blueberries was studied. The best extraction conditions identified were: ethanol acidified with 1% citric acid as extraction solvent, 1:3 kg/kg raw material/ solvent proportion, 36±1 ºC temperature and 2h time extraction time. From characterization of extracts, it was obtained that the total anthocyanin concentration was 879.0±12.9 mg cyanidin-3-glucoside/100 mL, the total phenol content was 1424 ± 67 mg GAE/100 mL and the antioxidant activity was 5730 ± 103 y 4872 ± 124 mg EAA/100 mL, measured by ABTS y DPPH respectively.

Palavras-chave : Food technology; Food coloring industry; Anthocyanin extract; Blueberry; Antioxidant.

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