Characterization of elder juice on the basis of some chemical parameters

The aim of this thesis was to determine selected chemical parameters of elderberry juice namely its wild variety and four cultivated types Albida 08, Albida 09, Dana and Haschberg. The relative density was the lowest for cultivar Albida 09 (1.0149) and the highest for the wild variety of elder from the surroundings of Padochov (1.0337). Values of pH ran within the range of 3.62 for cultivar Haschberg to 4.85 for cultivar Albida 08. The highest titrating acidity was determined by cultivar Haschberg (13.12 g l-1), the lowest content of acids was determined by cultivar Albida 08 (3.47 g l-1). The highest content of reducing sugars had cultivar Albida 08 (9.64%) together with the wild variety of elder from the surroundings of Padochov (9.47 %), the minimum amount of sugars was determined by cultivar Dana (4.79 %). The content of citric acid varied between 4.76 g l-1 by cultivar Dana and 13.48 g l-1 by cultivar Haschberg. The total amino acid content, expressed as a formole number, was the lowest in cultivar Haschberg (12.9) and the highest in the wild variety of elder from the surroundings of Padochov (59.2)