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Analysis of wine by modern analytical methods
Škařupa, Přemysl ; Pořízka, Jaromír (referee) ; Diviš, Pavel (advisor)
This work is dedicated to the analysis of wines using modern analytical methods. The theme is divided into two chapters. The first part deals with the chemical composition of wine from major components to the elements in trace amounts. The second part gives an overview of the most important modern analytical methods used for analysis of individual compounds in the wine and evaluated these methods in term of various parameters.
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Possibilities of determining the origin of the wine from the element composition
Škařupa, Přemysl ; Gregor,, Tomáš (referee) ; Diviš, Pavel (advisor)
The aim of this diploma thesis was to evaluate the possibility of determining the origin of the wine on the basis of elemental composition. For this purpose an analysis of major and minor elements was accomplished in selected varieties of wines. In total, 48 parameters for six wine subregions in Bohemia and Moravia was determined and used. The sum of 35 parameters represented the concentration of selected elements and other 13 parameters were created from the measured values. The concentration of elements was determined by inductively coupled plasma mass spectrometry (ICP-MS). For the purpose of classification of samples into groups multivariate statistical methods were used. The measured data set was firstly separated using analysis of variance (ANOVA) and discriminant analysis (DA). It has been proved that the selected variables influence the distribution of wines into categories according to their geographic location. Canonical discriminant analysis, principal component analysis (PCA) and cluster analysis has been used for graphical projection. Simultaneously the model based on our analysis was created to enable classify an unknown sample of wine according to the origin.
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Possibilities of determining the origin of the wine from the element composition
Škařupa, Přemysl ; Gregor,, Tomáš (referee) ; Diviš, Pavel (advisor)
The aim of this diploma thesis was to evaluate the possibility of determining the origin of the wine on the basis of elemental composition. For this purpose an analysis of major and minor elements was accomplished in selected varieties of wines. In total, 48 parameters for six wine subregions in Bohemia and Moravia was determined and used. The sum of 35 parameters represented the concentration of selected elements and other 13 parameters were created from the measured values. The concentration of elements was determined by inductively coupled plasma mass spectrometry (ICP-MS). For the purpose of classification of samples into groups multivariate statistical methods were used. The measured data set was firstly separated using analysis of variance (ANOVA) and discriminant analysis (DA). It has been proved that the selected variables influence the distribution of wines into categories according to their geographic location. Canonical discriminant analysis, principal component analysis (PCA) and cluster analysis has been used for graphical projection. Simultaneously the model based on our analysis was created to enable classify an unknown sample of wine according to the origin.
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Analysis of wine by modern analytical methods
Škařupa, Přemysl ; Pořízka, Jaromír (referee) ; Diviš, Pavel (advisor)
This work is dedicated to the analysis of wines using modern analytical methods. The theme is divided into two chapters. The first part deals with the chemical composition of wine from major components to the elements in trace amounts. The second part gives an overview of the most important modern analytical methods used for analysis of individual compounds in the wine and evaluated these methods in term of various parameters.
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