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elemental analysis (2)

Floral Origin of Honey by Elemental Analysis

In this study, the concentrations of K, Ca, Mg, Na, P, and S and element ratios were determined in 140 Hungarian mono-floral honey samples (acacia, linden, sunflower, rape, chestnut, forest, silk grass, and facelia) by inductively coupled plasma-optical emission spectrometry (ICP-OES). The results were chemometrically analysed using one-way ANOVA (LSD and Dunnett T3 test) and linear discriminant analysis (LDA) to determine the botanical origin based on the element content and element ratio of different honey types. Examination of element ratios showed that K/Na and K/Mg ratios were able to separate every honey type from each other with 100% cross-validation. 

Read the abstract at: Floral origin of honey

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This study examines the variations in isotopes and trace elements in relation to grape variety, environmental factors and provenance in order to address the wine authenticity in Cyprus. ICP-AES assessed the wines’ elemental content. SNIF-NMR and isotope ratio mass spectrometry methodologies determined in authentic and commercial wines the distribution of the naturally occurring stable isotopes of the deuterium/hydrogen (D/H) ratios and carbon (13/12C) in ethanol of wine and oxygen ratio (18/16O) in wine water. PCA (principle component analysis) highlighted the importance of grape variety and provenance, while supervised analysis pinpointed the vineyard effect and highlighted the contribution of the vintage year. These results can be incorporated to the EU Wine Isotopic Databank database providing both a guide and a tool for eventual candidatures for denomination of origin and support both Cypriot wine and winemakers. 

Read the abstract at: http://link.springer.com/article/10.1007/s12161-017-0959-2
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