Sorina Ropciuc
University of Suceava, Romania
Title: Honey authentication using the emission-excitation matrices
Biography
Biography: Sorina Ropciuc
Abstract
In this study it was carried out the usefulness of emission-excitation matrices in order to authenticate honey accordingly to their botanical origin. There were analysed 4 different honey types (tilia, sunflower, acacia and rape) using the emission-excitation matrices using a LS-55 Perkin Elmer fluorometer; the excitation was set between 280 to 500 nm and the emission was recorded between 320 and 700 nm. Fluorescence spectroscopy has a high selectivity by providing information about the presence of fluorescent molecules, and in addition fluorescence spectroscopy can be used in multidimensional mode by two-dimensional measurement of both emission and excitation. The highest intensities for the authentic samples were observed in the case of the samples of sunflower> rape> acacia> tilia. Each honey type exhibit unique emission-excitation spectra that can be used for the classification according to the botanical origin. The principal component analysis clearly separated the rape, sunflower and acacia honeys.