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Comparison of selected nutritional parameters of lesser known small fruit
Kaniová, Lenka ; Vránová, Dana (referee) ; Vespalcová, Milena (advisor)
The work deals with the chemical analysis of fruits and juices selected varieties of mulberry (Morus) and elderberry (Sambucus nigra L.). In the theoretical part there are the botanical characteristics of mulberry and elderberry, including the origin, history and prevalence. This part is focused on the content of active substances in fruits with a description of certain chemicals and the use of the fruit for food purposes. Finally, this section discusses methods for the determination of water content, soluble solids, pH, titratable acidity and formol number. In the experimental part was do determination in up in four samples of two varieties of mulberry and in samples of fifteen varieties of elderberry. Based on these results, it is possible to deduce the nutritionally important varieties. Mulberry Trnava and elderberry Sambu I contain the most water, and therefore are suitable for the production of juices. Unripe mulberry Trnava elderberries Samyl 2, Sambu I, Sambu 3 and Sampo I are the sourest varieties and they contain the highest content of mineral and organic acids.
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Posouzení trvanlivosti vybraných druhů dřev pro obchodovatelný výrobek
Sion, Matěj
In this thesis, the problem of the resistance of terrace boards to biological degradation. The following woods were chosen for the experiment: 1) Garapa (Apuleia leiocarpa Vog.) → is a representative of tropical woods and at the same time a species required by customers. 2) Mulberry (Morus) → a possible alternative in future years. 3) Acetylated European alder wood (Alnus glutinosa) → a possible alternative, when this method of modification appears to be very effective. The selected woods were tested according to the ČSN EN 350 standard for resistance to the wood decay fungi of white rot (Trametes versicolor) and brown rot (Gloeophyllum trabeu) and Coniophora puteana). The second part of this thesis was the determination of the total content of extractive substances (ES), phenolic substances (FS), carbohydrates (C), and pH values of aqueous leachate selected wood species. All samples were tested and compared with each other. The wood of the mulberry tree was evaluated and as to how these properties change along the radius of the trunk. The selected woods have been found to be suitable for decking. Weight losses (white and brown rot) were in negative values, so the fungi were not able to attack the wood and it was classified in durability class 1 "very durable". From the point of view of chemical composition, it was found that the most chemical substances are contained in the wood of the mulberry tree, garapa, and the least acetylated alder. In the case of the mulberry tree, it was also found that the amount of chemical substances varies depending on the position along the stem radius. The high resistance of garapa and mulberry to wood-rotting fungi is mainly caused by the content of chemical substances. The resistance of acetylated alder was due to the acetylation process.
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Comparison of selected nutritional parameters of lesser known small fruit
Kaniová, Lenka ; Vránová, Dana (referee) ; Vespalcová, Milena (advisor)
The work deals with the chemical analysis of fruits and juices selected varieties of mulberry (Morus) and elderberry (Sambucus nigra L.). In the theoretical part there are the botanical characteristics of mulberry and elderberry, including the origin, history and prevalence. This part is focused on the content of active substances in fruits with a description of certain chemicals and the use of the fruit for food purposes. Finally, this section discusses methods for the determination of water content, soluble solids, pH, titratable acidity and formol number. In the experimental part was do determination in up in four samples of two varieties of mulberry and in samples of fifteen varieties of elderberry. Based on these results, it is possible to deduce the nutritionally important varieties. Mulberry Trnava and elderberry Sambu I contain the most water, and therefore are suitable for the production of juices. Unripe mulberry Trnava elderberries Samyl 2, Sambu I, Sambu 3 and Sampo I are the sourest varieties and they contain the highest content of mineral and organic acids.
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