|
|
Determination of lipids and fatty acid profile in a barley caryopsis
Cvrková, Jana ; Vítová, Eva (referee) ; Svoboda, Zdeněk (advisor)
The diploma thesis deals with the determination of lipids and fatty acid profile in a barley caryopsis.(Hordeum vulgare). The theoretical part describes the synthesis of fatty acids and their degradation in plant material, secondly, it described the possibilities of lipid extraction and their determination and the possibilities of determination of fatty acids. In the experimental part method of lipid extraction on automated extractor Fex ®IKA and determination of fatty acids by GC-FID were optimized. For analysis of fatty acids two capillary columns SLB-IL 100 and Supelcowax were compared. Twenty varieties of barley from the year 2008 and twenty varieties from the year 2009 were compared based on the content of lipids and the representation of fatty acids in a barley caryopsis. The diploma thesis was realized in the Research Institute of Brewing and Malting, Plc. in Brno.
|
|
| |
|
|
Determination of lipids and fatty acid profile in a barley caryopsis
Cvrková, Jana ; Vítová, Eva (referee) ; Svoboda, Zdeněk (advisor)
The diploma thesis deals with the determination of lipids and fatty acid profile in a barley caryopsis.(Hordeum vulgare). The theoretical part describes the synthesis of fatty acids and their degradation in plant material, secondly, it described the possibilities of lipid extraction and their determination and the possibilities of determination of fatty acids. In the experimental part method of lipid extraction on automated extractor Fex ®IKA and determination of fatty acids by GC-FID were optimized. For analysis of fatty acids two capillary columns SLB-IL 100 and Supelcowax were compared. Twenty varieties of barley from the year 2008 and twenty varieties from the year 2009 were compared based on the content of lipids and the representation of fatty acids in a barley caryopsis. The diploma thesis was realized in the Research Institute of Brewing and Malting, Plc. in Brno.
|
|
|
The control of Toma orange juice authenticity on the basis of selected chemical properties
Cvrková, Jana ; Vítová, Eva (referee) ; Hrstka, Miroslav (advisor)
This study verifies Toma orange juice authenticity on the basis of selected chemical properties. In the theoretical part are definitions of the basic concepts concerning the orange juice. This part is also focused on characterization of technology procedures of orange juices, historical development of legislation in the European Union and Czech Republic, the most frequent ways of adulteration of fruit juices and methods, which determine their authenticity. In experimental part were made determinate analyses of orange juice Toma and experimental results were compared with standard values. On this basis it was deduced a conclusion about authenticity of orange juice Toma from commercial network.
|
guest ::
