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Využití enzymů ve vinařství
Brůčková, Jana
This Bachelor work is about usage of enzymes in viticulture. It describes enzymes which are included in grapes and usage of commercial enzymes in viticulture. In the end of the work are summarized some studies which are deal with usage of commercial enzymes and their influence on the quality and features of wine.
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Porovnání komerčně dostupných maceračních enzymů při výrobě bílých vín
Maleňáková, Daniela
This bachelor thesis deals with the influence of macerating enzymes in the white wine production. The use of enzymes, description of pectins and their change during the production of wine, and various types of maceration are described in detail in the literature review. The main aim of this work was to map macerating enzymes commercially obtainable in the Czech Republic and select representative sample for experimental part. Pomace from crushed grapes was divided into 9 batches, treated with enzymes and macerated for 24 hours. The pomace was pressed and stripped subsequently. The yield values, basic parameters and the polyphenolic profile of the must were evaluated for all samples. An evaluation of the enzymes parameters was performed based on these measurements. The results of measurements revealed that the best results were achieved by the Lallzyme Cuvee Blanc enzyme from LALLEMAND company.
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Výtěžnost oleje vybraných odrůd slunečnice roční [Helianthus annuus L.] pěstované v rozdílných systémech pěstování
Bartoš, Radek
The main objective of presented thesis was comparing cultivation of sunflower (Helianthus annuus L.) in convetional way of farming and organic farming. Experient was founded in Lanžhot (Břeclav district) in 2015. We evaluated the phenological phases BBCH and weather. These parameters were determined in harvested achenes: yield, HTS, moisture, oiliness, oil yield. Further, we calculated the direct costs, cost efficiency and return of sales. Results showed differences between conventional farming and organic farming. It could be explained by atypical course of weather in 2015
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Hodnocení lisovacích účinků u pneumatických lisů
Vajbar, Kamil
The aim of dissertation was to evaluate physico-mechanical characteristics of pneumatic (membrane) press depending on pressing efficiency. As the result of economic evaluation was to determine the financial cost which occurs during pressing proces for 1 liter of juice, as well as make this analysis for different pressures.
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