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Open AccessArticle

Physicochemical, Spectroscopic and Chromatographic Analyses in Combination with Chemometrics for the Discrimination of Four Sweet Cherry Cultivars Grown in Northern Greece

1
Laboratory of Food Chemistry, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
2
cp Foodlab Ltd., Polifonti, 25, 2047 Strovolos, Nicosia, Cyprus
3
Department of Social Administration and Political Science, Democritus University of Thrace, 69100 Komotini, Greece
*
Author to whom correspondence should be addressed.
Foods 2019, 8(10), 442; https://doi.org/10.3390/foods8100442
Received: 28 August 2019 / Revised: 20 September 2019 / Accepted: 22 September 2019 / Published: 26 September 2019
(This article belongs to the Special Issue Food Authentication: Techniques, Trends and Emerging Approaches)
A total of 56 sweet cherry samples belonging to four cultivars (Ferrovia, Canada Giant, Lapins, and Germersdorfer) grown in northern Greece were characterized and differentiated according to botanical origin. For the above purpose, the following parameters were determined: conventional quality parameters (titratable acidity (TA), pH, total soluble solids (TSS), total phenolic content (TPC), mechanical properties and sensory evaluation, sugars by High Performance Liquid Chromatography (HPLC), volatile compounds by GC/MS, and minerals by ICP-OES. Statistical treatment of the data was carried out using Multivariate Analysis of Variance (MANOVA) and Linear Discriminant Analysis (LDA). The results showed that the combination of volatile compounds and conventional quality parameters provided a correct classification rate of 84.1%, the combination of minerals and conventional quality parameters 86.4%, and the combination of minerals, conventional quality parameters and sugars provided the highest correct classification rate of 88.6%. When the above four cherry cultivars were combined with previously studied Kordia, Regina, Skeena and Mpakirtzeika cultivars, collected from the same regions during the same seasons, the respective values for the differentiation of all eight cultivars were: 85.5% for the combination of conventional quality parameters, volatiles and minerals; and 91.3% for the combination of conventional quality parameters, volatiles, minerals, and sugars. View Full-Text
Keywords: sweet cherries; discrimination; physicochemical quality parameters; chemometrics sweet cherries; discrimination; physicochemical quality parameters; chemometrics
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Papapetros, S.; Louppis, A.; Kosma, I.; Kontakos, S.; Badeka, A.; Papastephanou, C.; Kontominas, M.G. Physicochemical, Spectroscopic and Chromatographic Analyses in Combination with Chemometrics for the Discrimination of Four Sweet Cherry Cultivars Grown in Northern Greece. Foods 2019, 8, 442.

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