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Rowanberry - nutritional characteristic and utilization in grocery
Andrlová, Kateřina ; Vítová, Eva (referee) ; Vespalcová, Milena (advisor)
Bachelor elaborate is focused on one the less used species of small fruits - rowanberries. It gives an overview of the particular biologically active substances in this fruit and the use of the fruits in the human diet. Introduction is focused on the botanical description of rowan - Sorbus. There are presented the best known species of genus rowan. The greatest attention is paid to the type of Sorbus aucuparia which provide sweet variety and nutritional value of the fresh fruits. The second part is devoted to the description of biologically active substances contained in food rowanberries. The most valuable of them are vitamin C, flavonoid compounds (quercetin, campferol), phenolic compounds (chlorogenic acid) and pectins. Possibility of processing rowanberries in a variety of products are presented in next part. They are made of these compotes, jams, candied fruits, jellies and juice. Can be used for production of wine, cider and liqueur. In conclusion, there are described methods for determination the content of selected substances rowanberries (vitamin C, pectins). There are mentioned here primarily manual methods.
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Registrované léčivé přípravky ve formě bylinných čajů
Žabčíková, Hana
The diploma thesis deals with the issue of herbal tea, which is registered as medicinal product. The consumer market research has shown that these kinds of tea are put on the market by Megafyt Pharma s.r.o. and Leros s.r.o. An overview of all single-species medicinal tea and tea mixtures from both producers was created. In the practical part, the content of essential oil in the medicinal tea leaves of chamomile and sage from the producer Megafyt Pharma s.r.o. and the content of tannins in the tea leaves of Agrimonia eupatoria from the same producer were determined. The samples of individual drugs of different ranks were used for the determination and the evaluation was performed according to the Český lékopis 2017. The results were statistically evaluated. The obtained results showed that the essential oil content of chamomile corresponds to the pharmaceutical quality, but for the sage sample the essential oil content does not correspond to the given standard. In the case of Agrimonia eupatoria, the content of tannins was lower than determined by the Český lékopis 2017, only one sample of the given rank showed a higher content. Furthermore, the frequency of occurrence of individual species of herbs contained in the registered tea mixtures was evaluated.
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Modifikace barvy dřeva nanočásticemi železa
Kmoníčková, Petra
This thesis clarifies the influence of the content of polyphenolic substances on the color change of oak and larch wood after the modification of surface by iron. The samples were modified by solution of iron nanoparticles at two different concentrations. After that the change of color components was determined. The analysis of polyphenols by Folin-Ciocalteu by spectrophotometric method was made for each sample and also dry matter in the extracts was determined. The final data were subjected to statistical analysis and correlation and regression analysis were performed. Statistically significant correlations for both species were found.
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Vliv agrotechnických zásahů ve vinici na obsah barviv a tříslovin u modrých moštových odrůd révy vinné
Lokaj, Jakub
The scope of this thesis is to analyse available sources and evaluate the influence of agrotechnical interventions on the content of tannin in blue must cultivars of grapevine. The first part summarizes the information about chemical substances present in grapes focusing on a group of substances called polyephenols. A description of individual agrotechnical interventions together with results of studies published abroad follow. Finally, the agrotechnical interventions suitable for the chosen area of production are discussed and recommended. The result of the thesis states that to reach the optimal content of pigments and tannin, it is necessary to reduce load on plants, provide sufficient amount of sunshine on a surface of leaves and on grapes, balanced fertilization and sufficient irrigation. All chosen agrotechnical interventions must be executed in a suitable period of time.
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Rowanberry - nutritional characteristic and utilization in grocery
Andrlová, Kateřina ; Vítová, Eva (referee) ; Vespalcová, Milena (advisor)
Bachelor elaborate is focused on one the less used species of small fruits - rowanberries. It gives an overview of the particular biologically active substances in this fruit and the use of the fruits in the human diet. Introduction is focused on the botanical description of rowan - Sorbus. There are presented the best known species of genus rowan. The greatest attention is paid to the type of Sorbus aucuparia which provide sweet variety and nutritional value of the fresh fruits. The second part is devoted to the description of biologically active substances contained in food rowanberries. The most valuable of them are vitamin C, flavonoid compounds (quercetin, campferol), phenolic compounds (chlorogenic acid) and pectins. Possibility of processing rowanberries in a variety of products are presented in next part. They are made of these compotes, jams, candied fruits, jellies and juice. Can be used for production of wine, cider and liqueur. In conclusion, there are described methods for determination the content of selected substances rowanberries (vitamin C, pectins). There are mentioned here primarily manual methods.
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