We show differences between fruit juices that are commercially available on Slovenian and Cypriot markets. In addition we also wanted to determine whether the properties of these juices correspond to the ones listed on the declarations given on the packaging. The measurements of compared with the data from the literature, as well as the adulteration triangle show that the suspicions of adulterations of some juices on Slovenian and Cypriot markets were well founded. Using PCA, very good separation between two different countries was found due to distinct aquatic environment and climate.
COBISS.SI-ID: 22738471
Peak areas of particular compounds in chromatograms were input parameters for the chemometric analysis. The purpose of chemometric part of work was to calculate the model which would be capable to discriminate between the groups of fruit juices. Results of all three chemometric methods were the best in the case of discriminating samples of fruit nectars and in the case when we want to discriminate samples of 100 % orange juices and samples of orange nectars. Worse, but still satisfying results were obtained when different samples of 100 % fruit juices were compared.
COBISS.SI-ID: 542348
The purpose of presented work was to develop the analytical and chemometric methodology that will enable authenticity characterization of fruit juices on the base of their aroma profiles. For the experimental part, juices and nectars of Slovenian and foreign producers were selected. Solid phase microextraction (SPME) technique was chosen as the technique for sampling volatile components. Sampling, optimal elution conditions and determination with gas chromatography-mass spectrometry was optimized according to the standard procedures.
COBISS.SI-ID: 14434838