| Popis: |
A graphite furnace atomic absorption spectrometry (GFAAS) was used for trace elements (Cu, Fe, Mn, Zn, Cd, Cr, Ni, Pb) determination in “Rakija” samples, a grape brandy traditionally produced in Republic of Macedonia by distillation of grape pomace or wine for characterization. Principal component analysis was used to establish pattern recognition of the Macedonian brandies and classification depending of aging mode (oak barrels/oak chips) and distillation system (home-made/industrial). Two home-made brandies showed Cu, Fe and Zn concentrations higher than in the industrial distillates. These brandies were found to be not safe for consumption because of Cu and Zn over the maximum allowed values. For industrially produced brandies, Mn was identified to be a suitable marker related to aging with oak chips regardless variety, while Cu a marker for the influence of oak chips type. |
