| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1185152 | Food Chemistry | 2010 | 10 Pages |
Abstract
Seed ethanol extract, fractions and acetogenins from Annona cornifolia A. St.-Hil were tested for their antioxidant activities against DPPH. Acetogenins showed a strong DPPH radical-scavenging activity, similar to that of ascorbic acid. Ten acetogenins were isolated in their pure form and two were isolated as a mixture. Five are new acetogenins and are described here for the first time. Their structures were elucidated by NMR and ESI-MS analysis, and relative configurations bearing THF rings were established. The absolute configuration at C-36 of two acetogenins was defined by circular dichroism. This is, to the best of our knowledge, the first description of the antioxidant activity of acetogenins.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Luciana A.R. Santos Lima, Lúcia P.S. Pimenta, Maria Amélia D. Boaventura,