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Eclética Química

versão impressa ISSN 0100-4670versão On-line ISSN 1678-4618

Resumo

COUTINHO, I. D. et al. Determination of phenolic compounds and evaluation of antioxidant capacity of Campomanesia adamantium leaves. Eclet. Quím. [online]. 2008, vol.33, n.4, pp.53-60. ISSN 1678-4618.  https://doi.org/10.1590/S0100-46702008000400007.

Five flavanones and three chalcones were isolated from Campomanesia adamantium Berg. (Myrtaceae) leaves. The contents of these compounds were determined by HPLC. The phenolic contents were also determined. The monitoring of the antioxidant activity was carried out by inhibition of peroxidation using the linoleic acid system and radical-scavenging (DPPH). The plants were collected from 4 distinct cities of the Mato Grosso do Sul State, Brazil. The different samples exhibited a range of 4.67-232.35 mg/g chalcones and 15.62-50.71 mg/g flavanones and phenolic contents of the 7.24-21.19 mg/g gallic acid. All extracts showed high antioxidant activity with a wide range of the radical-scavenging (DPPH) from 52.0 to 92.2 % and inhibition oxidation of linoleic acid from 14.6 to 94.2%.

Palavras-chave : Campomanesia adamantium; Chalcones; Flavanones; Antioxidant activity.

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