The aim of this master's thesis was to determine the fatty acid composition of chocolate samples and the properties of phase transitions using gas cromatography (GC) and differential scanning calorimetry (DSC). We examined 22 various chocolates available on the Slovenian market. The chocolates were divided into 4 groups according to their composition: Dark, Milk, White and Unclassified. The results of both analyses were statistically evaluated using linear discriminant analysis (LDA). In terms of fatty acid composition, the chocolates in the Dark group had the highest stearic acid content and the lowest medium-chain fatty acid content. The highest levels of medium-chain fatty acids and unsaturated fatty acids were measured in the Unclassified group. The DSC method showed that the Dark group had the highest phase transition temperature and the highest enthalpy values. The Milk and White groups have the lowest enthalpy. The lowest phase transition temperature was measured in the Unclassified group. The statistical LDA analysis confirmed the correlation between different parameters from phase transition and fatty acid composition.
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