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Lyophilized fruits - chemical properties and processing possibilities
Horáková, Klára ; Vítová, Eva (referee) ; Vespalcová, Milena (advisor)
This diploma thesis deals with chemical analysis of selected frozen, dried and lyophilized fruit, specifically Mirabelle de Nancy, Aronia Nero and blackcurrant varieties Gairn Ben and Ben Lomond. In the theoretical part taxonomy and botanical characteristics of selected fruit are given. Subsequently the utilization of fruit in food industry is described. In common the theoretical part focuses on lyophilisation and drying of fruit and raw food. Further in this part the methods of phenolic substances, anthocyanins, antioxidant capacity and finally ascorbic acid and carbohydrates value measurements are specified. In the experimental part the value were determined measurements of biologically active substances: total phenols, total anthocyanins, antioxidant capacity, ascorbic acid and carbohydrates. For all value measurements were compared the frozen, dried and lyophilised samples of every single fruit. Further, the every sort of fruit were compared to each other. Following the raw food preparaon a product of lyophilised fruit was made.
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"Fresh" pastries in retail sale of the Czech republic
MATĚJČKOVÁ, Jana
The diploma thesis identifies the attitude of the Czech public on the issue of fresh breads and pastries prepared from frozen semi-finished product based on consumer research. It is focused on the supply side, specifically on analysis of sales of fresh bread and bakery products prepared from frozen semi-finished products within the selected retail units. Further to the survey among Czech producers of bread, and also monitored supply of bread from frozen semi-finished products in selected retail chains.
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Lyophilized fruits - chemical properties and processing possibilities
Horáková, Klára ; Vítová, Eva (referee) ; Vespalcová, Milena (advisor)
This diploma thesis deals with chemical analysis of selected frozen, dried and lyophilized fruit, specifically Mirabelle de Nancy, Aronia Nero and blackcurrant varieties Gairn Ben and Ben Lomond. In the theoretical part taxonomy and botanical characteristics of selected fruit are given. Subsequently the utilization of fruit in food industry is described. In common the theoretical part focuses on lyophilisation and drying of fruit and raw food. Further in this part the methods of phenolic substances, anthocyanins, antioxidant capacity and finally ascorbic acid and carbohydrates value measurements are specified. In the experimental part the value were determined measurements of biologically active substances: total phenols, total anthocyanins, antioxidant capacity, ascorbic acid and carbohydrates. For all value measurements were compared the frozen, dried and lyophilised samples of every single fruit. Further, the every sort of fruit were compared to each other. Following the raw food preparaon a product of lyophilised fruit was made.
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