Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Antioxidative properties of roselle (Hibiscus sabdariffa L.) in linoleic acid model system

Antioxidative properties of roselle (Hibiscus sabdariffa L.) in linoleic acid model system A study was conducted to determine the antioxidative properties of roselle (Hibiscus sabdariffa L.) methanol extract by monitoring the formation of diene-conjugated compounds and thiobarbituric acid reactive substances (TBARS) in linoleic acid model system. The properties were compared to those of butylated hydroxy-anisole (BHA) and a-tocopherol. Results indicated that the roselle extract showed stronger antioxidant properties than BHA or a-tocopherol. A total of 200 parts per million (ppm) of the extract inhibited more than 85 per cent of diene-conjugated compounds after seven days of incubation at 40?C. The total phenolic compound was found to be 2.96mg/g calyx as gallic acid equivalent. This indicates that roselle is a good source of natural antioxidants which may protect the body from damage by free radicals and lipid peroxidation. The protective effect is probably through the action of highly bioavailable ascorbic acid, ß-carotene and phenolic compounds, especially the anthocyanins. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nutrition & Food Science Emerald Publishing

Antioxidative properties of roselle (Hibiscus sabdariffa L.) in linoleic acid model system

Loading next page...
 
/lp/emerald-publishing/antioxidative-properties-of-roselle-hibiscus-sabdariffa-l-in-linoleic-yq1iILrLzJ

References (15)

Publisher
Emerald Publishing
Copyright
Copyright © 2002 MCB UP Ltd. All rights reserved.
ISSN
0034-6659
DOI
10.1108/00346650210413951
Publisher site
See Article on Publisher Site

Abstract

A study was conducted to determine the antioxidative properties of roselle (Hibiscus sabdariffa L.) methanol extract by monitoring the formation of diene-conjugated compounds and thiobarbituric acid reactive substances (TBARS) in linoleic acid model system. The properties were compared to those of butylated hydroxy-anisole (BHA) and a-tocopherol. Results indicated that the roselle extract showed stronger antioxidant properties than BHA or a-tocopherol. A total of 200 parts per million (ppm) of the extract inhibited more than 85 per cent of diene-conjugated compounds after seven days of incubation at 40?C. The total phenolic compound was found to be 2.96mg/g calyx as gallic acid equivalent. This indicates that roselle is a good source of natural antioxidants which may protect the body from damage by free radicals and lipid peroxidation. The protective effect is probably through the action of highly bioavailable ascorbic acid, ß-carotene and phenolic compounds, especially the anthocyanins.

Journal

Nutrition & Food ScienceEmerald Publishing

Published: Feb 1, 2002

Keywords: Empirical study

There are no references for this article.