Constitutive phenolics of Harpephyllum caffrum (Anacardiaceae) and their biological effects on human keratinocytes

Assessment of the UV protecting potential of leaf extract of Harpephyllum caffrum proved that it possesses oxygen radical absorbance capacity and inhibits the production of the proinflammatory cytokine IL-6 by human keratinocytes following UV radiation. Three hitherto unknown phenolics were characterized from this extract.78