Evaluation of radical scavenging

BANDONiENE D and MURKOVic M (2002) On-line HPLC-DPPH screening method for evaluation of radical scavenging phenols extracted from apples (Malus domestica L.), J Agric Food Chem, 50, 2482-87. 

Lavelli V, Hippeli S, Peri C and Elstner EF. 1999. Evaluation of radical scavenging activity of fresh and air-dried tomatoes by three model reactions. J Agric Food Chem 47(9) 3826—3831. 

Bandoniene D, Murkovic M. On-Line HPLC-DPPH Screening Method for Evaluation of Radical Scavenging Phenols Extracted from Apples (Malus domeshca L.). Journal of Agricultural and Food Chemistry. 2002 50, 2482-2487. 

Bandoniene, D., M. Murkovic, W. Pfannhauser, P. Venskutonis, and D. Gruzdiene. 2002. Detection and activity evaluation of radical scavenging compounds by using DPPH free radical and on-line HPLC-DPPH methods. European Food Research and Technology 214(2) 143-147. 

Maruska, A., M. Stankevicius, and Stanius. 2010. Coupling of capillary electrophoresis with reaction detection for the on-line evaluation of radical scavenging activity of analytes. Procedia Chemistry 2(l) 54-58. 

Implicit in the form of Equation 13.4 are the assumptions that AA, AB and BB are the only products, that they are always obtained 1 2 1 ratios of from out-of-cage combinations, and that exclusive formation of AB signihes complete in-cage reaction of the radical pairs. The limitations of Equation 13.4, particularly when applied to the evaluation of the cage factor in constrained or microphase-compartmentalized media, have been discussed recently. In symmetrically substituted compounds where the geminate radicals produced upon lysis have the same structures, the addition of radical scavengers or time-resolved detection of the radicals is needed for the estimation of FoAB-... 

Evaluation of the Scavenging Activity on Superoxide Anion Radical (O )... 

Jinno, J., Mori, H., Oshiro, Y., Kikuchi, T. and Sakurai, H. (1991). Evaluation of free radical scavenging activity of OPC-14117 by electron spin resonance technique. Free Rad. Res. Commun. 15, 223-230. 

Jimenez-Escrig A, Jimenez-Jimenez I, Sanchez-Moreno C and Saura-Calixto F. 2000. Evaluation of free radical scavenging of dietary carotenoids by the stable radical 2,2-diphenyl-l-picrylhydrazyl. J Sci Food Agric 80(11) 1686—1690. 

Antioxidant capacity can be measured by several techniques, each of which has its own limitations. Antioxidant capacity of fruit juices and purees was evaluated by the DPPH method (which measures the radical-scavenging activity against a nonphysio-logical free radical), and treatment of these products with PEF or HHP resulted in losses... 

Noipa T, Srijaranai S, Tuntulani T, Ngeontae W. New approach for evaluation of the antioxidant capacity based on scavenging DPPH free radical in micelle systems. Food Research International. 2011 44(3) 798-806. 

RC Rose, AM Bode. Biology of free radical scavengers an evaluation of ascorbate. FASEB J 7 1135 — 1142, 1993. 

High-performance LC techniques are often applied to various fruit juices and drinks (158-161) to evaluate the antioxidative activity, which is attributed largely to the phenolics, such as flavonoids and phenylpropanoids. Analysis of food phenolics is gaining popularity with the growing evidence of possible health-promoting benefits of phenolics in foods, such as antioxidative, antimicrobial, tumor-inhibiting, free-radical scavenging, and other clinically relevant activities. 

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