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E. De Rijke, P. Out, W. M. A. Niessen, F. Ariese, C. Gooijer and U. A. T. Brinkman, “Analytical Separation and Detection Methods for Flavonoids,” Journal of Chromatography A, Vol. 1112, No. 1-2, 2006, pp. 31-63. doi:10.1016/j.chroma.2006.01.019

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• TITLE: Antioxidant Properties and Chemical Composition Relationship of Europeans and Brazilians Propolis

  AUTHORS: Sabrina Fabris, Mariangela Bertelle, Oxana Astafyeva, Elena Gregoris, Roberta Zangrando, Andrea Gambaro, Giuseppina Pace Pereira Lima, Roberto Stevanato

  KEYWORDS: Propolis; Antioxidant Properties; Chemical Composition

  JOURNAL NAME: Pharmacology & Pharmacy, Vol.4 No.1, January 23, 2013

  ABSTRACT: The antioxidant activity of ethanol extracts of propolis, bee glue, of various climate and orographic characteristics, collected from Italy, Brazil and Russia, was evaluated measuring their inhibitory action on peroxidation of linoleic acid, radical scavenging ability towards 2,2’-diphenyl-1-picrylhydrazyl, total phenolic content and reducing capacity by enzymatic and Folin method respectively. Propolis samples were chemically characterized by HPLC-MS/MS in order to find a possible correlation between antioxidant activity and polyphenols composition and quantification. The results obtained indicate that Italian and Russian propolis samples have similar polyphenolic composition and, as a consequence, almost similar antioxidant activity, while Brazilian propolis evidence lower polyphenolic and antioxidant characteristics. Climate and orography reasons of these differences are also suggested.