Phenolic profile and antioxidant activity of Serbian
polyfloral honeys
Food Chem, 2014 Feb 15;145C:599-607
A total of 58 polyfloral honey samples from different
regions in Serbia were studied to determine their phenolic profile, total
phenolic content and antioxidant capacity. UHPLC-LTQ OrbiTrap MS made possible
the identification of 36 compounds: 24 flavonoids, two abscisic acids, and 10
phenolic acids and their derivatives.
Quantification was done using 14
available standards. Data on phenolics and abscisic acids allowed the
discrimination and classification of honeys in accordance to their geographical
origin, using pattern recognition techniques, principal component analysis and
partial least squares discriminant analysis. Samples originated from Vojvodina
and Zlatibor region were clearly distinguished from those from the rest of
Serbia because of the presence of dicaffeoylquinic acid, ellagic acid, caffeic
acid phenethyl ester, and chlorogenic acid, among others.
A good correlation
(r=0.865) was observed between total phenolic content and radical-scavenging
activity. Total phenolic content ranged from 0.03 to 1.39mg GAE/g and radical
scavenging activity ranged from 1.31% to 25.61%.
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