Evaluation of phenolic compounds by an ecological spectrometric methods

Abstract

The study aimed to analyse phenolic compounds from wine samples using “ecological” spectrometric methods (low consumption of chemical reagents) comparing a traditional UV-VIS spectrophotometer to a microplate reader spectrometer. Different experimental wine samples were obtained using active charcoal, gelatine and anionic resins. The used wines were produced from Fetească neagră grapes harvested at full maturity from Şuletea region, Vaslui County, with approx. 290 g/L concentration in fermenting substances.A total of 43 samples were analysed. The microplate reader was shown to be an extremely efficient and economic tool for analysing wines as the linearity of the used methods was shown to be comparative between devices. The time required for analysis is considerably reduced in this case and the versatility of the method allows better statistical evaluation of parameters within the limit of 10% of the relevant significance.