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Article

Electron spin resonance measurement of radical scavenging activity of Aronia melanocarpa fruit juice

Stefka Valcheva-Kuzmanova1★, Branka Blagović2, Srećko Valić2,3★ Corresponding author

  1. 1Department of Preclinical and Clinical Pharmacology and Toxicology, Medical University, 9002 Varna, Bulgaria.
  2. 2Department of Chemistry and Biochemistry, School of Medicine, University of Rijeka, Croatia.
  3. 3Rudjer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia.

CORRESPONDENCE

Stefka Valcheva-Kuzmanova

Department of Preclinical and Clinical Pharmacology and Toxicology, Medical University, 9002 Varna, Bulgaria.

stefkavk@yahoo.com

Received: 15-11-2011; Revised: 26-11-2011.

Volume 8, Issue 30 · pp. 171–172 · PUBLISHED 23 May 2012 · DOI: 10.4103/0973-1296.96583

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ABSTRACT

Background: The fruits of Aronia melanocarpa (Michx.) Elliot contain large amounts of phenolic substances, mainly procyanidins, anthocyanins and other flavonoids, and phenolic acids. The ability of phenolic substances to act as antioxidants has been well established. Objective: In this study, we investigated the radical scavenging activity of A. melanocarpa fruit juice (AMFJ). Materials and Methods: The method used was electron spin resonance (ESR) spectroscopy. The galvinoxyl free radical was used as a scavenging object. AMFJ was added to the galvinoxyl free radical solution. The measure of the radical scavenging activity was the decrease of signal intensity. Results: AMFJ showed a potent antiradical activity causing a strong and rapid decrease of signal intensity as a function of time and juice concentration. This effect of AMFJ was probably due to the activity of its phenolic constituents. Conclusion: The ESR measurements in this study showed a pronounced radical scavenging effect of AMFJ, an important mechanism of its antioxidant activity.

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    Valcheva-Kuzmanova, S., Blagović, B., & Valić, S. (2012). Electron spin resonance measurement of radical scavenging activity of Aronia melanocarpa fruit juice. Pharmacognosy Magazine, 8(30), 171–172. https://doi.org/10.4103/0973-1296.96583