Structure and antioxidant activity of phenolic compounds isolated from the edible fruits and stem bark of Harpephyllum caffrum |
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Authors: | Roshila Moodley Neil A Koorbanally MD Shahidul Islam |
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Institution: | 1. School of Chemistry and Physics, University of KwaZulu-Natal (UKZN), Durban, South Africa;2. School of Life Sciences, UKZN, Durban, South Africa |
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Abstract: | Antioxidant activity in edible fruits is an important characteristic in the choice of fruits for human consumption, and has profound influence on nutrition and health. Two pharmacologically active triterpenoids, β-sitosterol and lupeol, and the powerful flavan-3-ol antioxidant, (+)-catechin, were isolated from the edible fruits of Harpephyllum caffrum while a mixture of cardanols, an alkyl p-coumaric acid ester, and (+)-catechin were isolated from the stem bark. This is the first report of these compounds being isolated from this plant. The antioxidant capacity of (+)-catechin was higher than the other isolated compounds as well as the known antioxidant, ascorbic acid. |
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Keywords: | Harpephyllum caffrum (+)-catechin medicinal value cardanol coumarate antioxidant activity |
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