Characterization of the free Radical Scavenging Activity of Rose Hip (Rosa canina L.) Extract

• Published in: International journal of food properties Vol. 15; no. 1; pp. 188 - 201
• Main Authors: Tumbas, Vesna T, Čanadanović-Brunet, Jasna M, Gille, Lars, Đilas, Sonja M, Ćetković, Gordana S
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis Group 2012; Taylor & Francis Ltd
• Subjects: Antioxidants; ascorbic acid; electron paramagnetic resonance spectroscopy; ESR spectroscopy; Extraction processes; flavonoids; Flowers & plants; free radical scavengers; Free radicals; phenolic acids; Phenolic compounds; Polyphenols; Rosa canina; Rose hip; solid phase extraction; superoxide anion; Vitamin C
• ISSN: 1532-2386; 1094-2912; 1532-2386
• DOI: 10.1080/10942911003754742

Rose hip is a rich source of naturally occurring antioxidants. Its activity is mainly attributed to compounds represented by vitamin C and polyphenols. Rose hip extract was fractionated using solid phase extraction. Free radical scavenging activities of rose hip extract fractions containing vitamin C (39.17 μg/g dry rose hip), flavonoids (0.11 μg/g dry rose hip), and phenolic acids (0.50 μg/g dry rose hip) towards hydroxyl and superoxide anion radicals were evaluated using electron spin resonance spectroscopy. The presence of antioxidant derived free radical intermediates during reactions with superoxide anion radical was also observed. Very potent free radical scavenging activities of rose hip extract fractions, as well as good correlations with compositional data were revealed.