Resumen

ALBA-JIMENEZ, JIMENA ESTHER et al. Betalains, polyphenols and antioxidant activity in minimally processed red prickly pear stored in controlled atmospheres. Gayana Bot. [online]. 2014, vol.71, n.2, pp.222-226. ISSN 0717-6643.  http://dx.doi.org/10.4067/S0717-66432014000200005.

The red prickly pear Opuntia ficus-indica (L.) Mill. (Cactaceae) is an important source of bioactive and functional compounds, but has problems for its storage and commercialization. Therefore a study was done about controlled atmospheres effect upon the minimally processed fruit to conserve the antioxidant compounds at 5 °C during 16 days of storage. At the end of the storage period, we registered that the treatments with 5% O₂ + 95% N₂ and 10% CO₂ + 5% O₂ + 85% N₂ maintained the level of betalains (125.6 mg l^-1, 126.16 mg l^-1) and antioxidant activity (263.7 μmol Eq Trolox 100 ml^-1, 267.6 μmol Eq trolox 100 ml^-1) compared to the initial evaluated content (116.1 mg 1^-1, 270.4 μmol Eq Trolox 100 ml mg 1^-1). The polyphenols content did not change over treatment 5% O₂ + 95% N₂ (d0-16 ≈ 65.6 - 57.7 mg EAG 100 ml^-1). The results show that even after 16 days of storage, with using controlled atmospheres, minimally processed prickly pear has high antioxidant activity because it keeps the betalains and polyphenols content.

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