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Screening of Fifty Cunoniaceae Species from New Caledonia for Inhibitors of Xanthine Oxidase and Scavengers of Superoxide Anions
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Edité par CCSD ; Taylor & Francis -
International audience. Two-hundred-and-four extracts (101 ethyl acetate extracts and 103 methanol extracts) from 50 species of Cunoniaceae from New Caledonia were screened for antioxidant properties due to free radical scavenging and/or xanthine oxidase (XOD) inhibitory activity. Of the crude extracts, 95.1% were active at a concentration of 50 mg/ml. Fifteen (27.8%) extracts showed more than 50% activity at 10 mg/ml and were studied for XOD inhibition. All were active against XOD at 50 mg/ml but only 6 (40%) showed up to 60% inhibition. Ethyl acetate extracts from the bark of Weinmannia dichotoma Brongniart & Gris, Weinmannia monticola Däniker and Cunonia lin-earisepala (Guillaumin) Bernardi and from the roots of Codia incrassata Pampanini, as well as methanol extract from the bark of Pancheria brunhesii Pampanini, exhibited the highest activities (between 70% and 86% XOD inhibition at 50 mg/ml). In view of these preliminary results, New Caledonian Cunoniaceae species appears to be promising material for the isolation of bioactive compounds.
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