EXTRACT OF GREYIA RADLKOFERI AND USE THEREOF
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United States of America Patent
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May 17, 2013
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May 18, 2012
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Abstract
This invention relates to the isolation, and use of a plant extract in the treatment of skin hyper-pigmentation. More particularly, this invention relates to the isolation of a tyrosinase inhibitor in an extract of plant material from the Greyia radlkoferi (G. radlkoferi) plant, the extract including 5,7-dihidroxyflavone[(2S)-pinocembrin]; 2′, 6′-dihydroxy-4′-methoxydihydrochalcone; 2′,4′,6′-trihydroxyhydrochalcone; 3,5,7-trihydroxyflavone and 4′,5′7-thhydroxyisoflavone.
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