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The objective of the present study was to characterize commercial fir honey produced in different regions in Greece and investigate the possibility of geographical classification using data sets of physicochemical parameters, colour attributes, and volatile compounds using multivariate analysis techniques. For this purpose, 43 fir honey samples were collected during harvesting periods 2010-2013 from five different regions in Greece. Physicochemical parameters (electrical conductivity, ash, pH, moisture, free acidity, lactonic acidity, total acidity, lactonic to free acidity ratio) were determined using official methods of analysis, while colour attributes (L*, a*, b*) and browning index were determined using CIE recommendations and methodology published in the literature, respectively. Finally, volatile profiles were determined using headspace solid phase microextraction coupled to gas chromatography/mass spectrometry. Results showed that honey samples analyzed met the criteria set by regulatory standards for fir honey, and exhibited variations in physicochemical parameter values, colour attributes, and volatile profiles, according to geographical origin. On the basis of the results obtained, it is possible to classify (correct prediction 69.8%) commercial fir honeys produced in specific regions, using a data set of 21 parameters and chemometrics.

iosr journal of agriculture and veterinary science

Characterization and Geographical Classification of Greek Fir Honeys Based on Physicochemical Parameters, Colour Attributes, and Volatile Compounds Using Chemometrics