Antioxidant capacity of cornelian cherry (Cornus mas L.) – Comparison between permanganate reducing antioxidant capacity and other antioxidant methods

• Published in: Food chemistry 2012-09, Vol.134 (2), p.734-741
• Main Authors: Popović, Boris M., Štajner, Dubravka, Slavko, Kevrešan, Sandra, Bijelić
• Format: Article
• Language: English
• Subjects: Anthocyanin; Anthocyanins - chemistry; antioxidant activity; Antioxidants - chemistry; Biological and medical sciences; chemical composition; cherries; Cornelian cherry; Cornus mas; DPPH; ethanol; Food industries; FRAP; Fruit and vegetable industries; Fundamental and applied biological sciences. Psychology; Genotype; lipid peroxidation; Manganese Compounds - chemistry; Oxidation-Reduction; oxidative stress; Oxides - chemistry; Permanganate reducing antioxidant capacity; Plant Extracts - chemistry; principal component analysis; Prunus - chemistry; Prunus - genetics
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2012.02.170

► Cornelian cherry (Cornus mas) fruits possess high antioxidant activity. ► There is a huge variation among C. mas genotypes in terms of antioxidant activity. ► Permanganate reducing antioxidant capacity (PRAC) was significantly positively correlated with other antioxidant parameters. ► PRAC can also be used as a useful indicator of total antioxidant capacity (TAC). ► Chemometric evaluation also found close interdependence between PRAC, FRAP and anthocyanin content. Ethanol extracts (80% in water) of 10 cornelian cherry (Cornus mas L.) genotypes were studied for antioxidant properties, using methods including DPPH, NO, O2- and OH antiradical powers, FRAP, total phenolic and anthocyanin content (TPC and ACC) and also one relatively new, permanganate method (permanganate reducing antioxidant capacity-PRAC). Lipid peroxidation (LP) was also determined as an indicator of oxidative stress. The data from different procedures were compared and analysed by multivariate techniques (correlation matrix calculation and principal component analysis (PCA)). Significant positive correlations were obtained between TPC, ACC and DPPH, NO, O2-, and OH antiradical powers, and also between PRAC and TPC, ACC and FRAP. PCA found two major clusters of cornelian cherry, based on antiradical power, FRAP and PRAC and also on chemical composition. Chemometric evaluation showed close interdependence between PRAC method and FRAP and ACC. There was a huge variation between C. mas genotypes in terms of antioxidant activity.