Total phenols and antioxidant activities of natural honeys and propolis collected from different geographical regions of Ethiopia

  • D. Sime
  • M. Atlabachew
  • M. R. Abshiro
  • T. Zewde
Keywords: Ethiopia, Honey, Propolis, Polyphenols, Flavonoids, Antioxidants

Abstract

In this study, ten honey and five propolis samples from different geographical origins were tested. Both honey and propolis samples showed high content of total phenolic compounds (330-610 mg gallic acid equivalent (GAE)/100 g honey; 365-1022 mg GAE/g ethanol extract of propolis (EEP). The total flavonoids ranged from (15.1-42.6 mg catechin equivalent (CE)/100 g for honey; to 123-74 mg CE/g for EEP. These honeybee products of Ethiopia had high total radical scavenging properties with respect to 2,2-diphenyl-1-picryl-hydrazyl (DPPH); 18.1-59.8% and 48.6-87.8% for honey and EEP respectively. Furthermore, the hydroxymethylfurfural (HMF) of the honey samples was found to be low with a mean value of 4.8 mg/kg suggesting that the samples were of good quality. The antioxidant properties of the products showed a good correlation (r2 = 0.50-0.82) with their polyphenolic contents.

 

KEY WORDS: Ethiopia, Honey, Propolis, Polyphenols, Flavonoids, Antioxidants

 

Bull. Chem. Soc. Ethiop. 2015, 29(2), 163-172

DOI: http://dx.doi.org/10.4314/bcse.v29i2.1

Published
2015-07-13
Section
Articles

Journal Identifiers


eISSN: 1726-801X
print ISSN: 1011-3924