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Determination of vitamin C in cornelian cherry
 Palová, Petra ; Vránová, Dana (referee) ; Vespalcová, Milena (advisor)
This thesis deals with determination of content of vitamin C in various types of cornelian cherry (Cornus mas L.). Some basic information about Cornus mas L. and its various types are described in the literary part of this thesis. The summary of important components present at fruit and some possibilities of processing and utilization are described here too. Various methods of determination of vitamin C are presented at the end of the literary part. The main result of the experimental part of this thesis is the comparison of content of vitamin C in various types of cornelian cherry (Cornus mas L.). Reversed Phase-High Performance Liquid Chromatography was used as the main method. HPLC method of determination of vitamin C in various types of Cornus mas L. was completed with the orientation titration. Then total antioxidant capacity of fruit was evaluated by using of reaction of extracts of fruit with stable radical DPPH. The biggest amount of vitamin C was determined in the Fruchtal variety. The biggest total antioxidant capacity was determined in the Vydubecký variety.
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