Abstract
Chemical composition analysis of essential oil isolated from the leaves of Ocimum canum Sims. reported the presence of thirty six compounds. The major compound was camphor (39.77%). In vitro antioxidant activity of the isolated oil showed dose dependent free radical scavenging activity against DPPH (IC50 523.55 ± 0.001 μg/mL) and hydroxyl radicals (491.12 ± 0.002 μg/mL), metal chelating (781.38 ± 0.001 μg/mL) and prevention of deoxyribose degradation (168.50 ± 0.003 μg/mL) activities were also calculated. Antioxidant activity of oil was less observed when compared with positive controls such as ascorbic acid and BHT (12.49 ± 0.002 and 30.14 ± 0.005, respectively). Significant cytotoxicity (IC50 value of 60 μg/mL) and DNA fragmentation was observed in breast cancer cells (MCF-7).
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