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Isolation of a free radical-scavenging antioxidant from water spinach (Ipomoea aquatica Forsk)
Nagendra Prasad, K and Soundar, Divakar and Gyarahally, R Shivamurthy and Aradhya, S. M. (2005) Isolation of a free radical-scavenging antioxidant from water spinach (Ipomoea aquatica Forsk). Journal of the Science of Food and Agriculture, 85. pp. 1461-1468.
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Citations: 36 in Google Scholar
Abstract
<p align="justify">Ipomoea aquatica Forsk, a green leafy vegetable that is a rich source of vitamins and amino acids with many health benefits, has been explored for the isolation and identification of its bioactive compounds. Activity-guided repeated fractionation of a methanol extract on a silica gel column followed by an XAD column yielded a compound that exhibited antioxidant activity with an EC50 value of 83 ± 1.02 µgml−1 reaction mixture. It also showed very strong lipid peroxidation-inhibitory activity in a liposome model system with an EC50 value of 72.2 ± 0.9 µgml−1. However, it showed negligible metal-chelating activity. Based on UV, 2D nuclear magnetic resonance and gas chromatography/mass spectrometry studies, the compound was tentatively identified to be 7-O-β-D-glucopyranosyl-dihydroquercetin-3-O-α- D-glucopyranoside. This is the first report on the antioxidant properties of I aquatica leaf extracts. 2005 Society of Chemical Industry</p>
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | green leafy vegetable; Ipomoea aquatica Forsk; antioxidant activity; flavonol glycoside; 7-O-β-Dglucopyranosyl- dihydroquercetin-3-O-α-D-glucopyranoside |
| Subjects: | 500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 18 Flavonoid Chemistry 600 Technology > 08 Food technology > 23 Vegetables |
| Divisions: | Fermentation Technology and Bioengineering |
| Depositing User: | Food Sci. & Technol. Information Services |
| Date Deposited: | 14 Sep 2005 |
| Last Modified: | 28 Dec 2011 09:25 |
| URI: | http://ir.cftri.res.in/id/eprint/177 |
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