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Architecture in landscape - Winery
Mikláš, Jan ; Vojtová, Lea (referee) ; Urbášková, Hana (advisor)
Master´s thesis deal with optimum proposal reset vineyard economy in viticultural area Strachotin. The task is utiliziation of landscape potential CHKO Palava and hydro-electric plant Nove Mlyny with promotion development agricultural tourism in the area. Theoretic part of thesis includes analyses inquiries and progression areas, production problems and vine processing. Practical part includes set of questionable drawings, used technology and material for security of correct performance function construction.
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Study of the antioxidative potential of selected fruit marcs
Havlíčková, Barbora ; Zemanová, Jana (referee) ; Vespalcová, Milena (advisor)
Subject of this bachelor thesis was antioxidant activity of selected kind of fruits. Among selected kinds were the marc of red and white grapes, moldings from red elderberry and aronia. Two species of made capsules from marcs of white grapes and aronia were also subjected to analysis. Results of this bachelor thesis are summarized to four chapters. The first chapter compares the water content of drying at 40 ° C and 105 ° C. In the second chapter, the results of extraction in different proportions of solvent mixture ethanol - water and results of extraction in prepared artificial gastric juice are discussed. As a result, the water – ethanol mixture was a more effective solvent than artificial gastric juice. The third chapter deals with the results and discussion of the determination of the total content of phenolic substances. For the solvent mixture, the largest amount of polyphenols in the red vine marc was determined to be 43,56 mg.g-1, while in gastric juice the largest content in the elderberry was determined to be 11,89 mg.g-1. Capsules were also extracted in gastric juice, and 2,53 mg.g-1 was found in aronia tablets, while 5,93 mg.g-1 in white grape tablets. The last chapter compares the results of TAA measurements using the TEAC and EPR methods. The EPR method was more suitable for much diluted solutions than the TEAC method. The results of this work show that there is a large number of polyphenols and other antioxidants in the moldings that affect the overall antioxidant activity. Marcs have great potential for use as natural dyes or can be used to make a food supplement.
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Refinery and characterization of grape oil
Prchal, Miroslav ; Vítová, Eva (referee) ; Kovalčík, Adriána (advisor)
This bachelor thesis deals with the topic concerning the extraction of wine oil from grape seeds, the refining of the extracted oil and the characterization of grape oil. Grape oil was extracted from the grape seeds obtained from the harvest in September 2019 by the winery Vavricek (Brezi u Mikulova, Czech Republic). The received grape pomace was the mixture of Green Veltliner and Blanc Saugvinon. The oil was extracted from the separated seeds by using liquid extraction in n-Hexane. The extraction yields of grape oil were compared with the literature, involving the different extraction methods as well as different oil plants. For the refining of the grape oil have been applied more steps aiming for the removal of the lipophilic pigments. Different adsorbents of pigments have been applied. The purification efficiency has been proved by the investigation with the thin layer and the high-performance chromatography. Moreover, the gas chromatography was used to characterize the composition of the oil. Finally, the composition profile of the oil obtained by the liquid extraction before and after purification has been compared with the commercial grape oil, which has been received by cold pressing. The results of the work show that the winery waste produced in South Moravia is a valuable raw material, which can be used for the production and different products, e.g., grape oil and pigments (chlorophyll).
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Comparison of content anthocyanin pigments in selected cultivars of black elderberry and grape
Becková, Eliška ; Vítová, Eva (referee) ; Vespalcová, Milena (advisor)
The purpose of this thesis is to compare the contents anthocyans in different varieties of European elderberry (Sambucus nigra L.). It was also studied the relationship between the content anthocyans in selected samples of blue grape varieties (Vitis vinifera L.) and position of the track, where the grapes were grown. The theoretical part describes elderberries and grapes in terms of botanical, chemical, and in terms of their using in the food industry. The dominant part of this chapter is to describe anthocyans and possibilities for their determination in the elderberry and grapes. Emphasis has been placed on the pH-differential method and determination by high performance liquid chromatography. The experiments are divided into two parts. The aim of the first experimental part is comparison of the total anthocyanins content in fifteen varieties of elderberry. The performed analysis shows that in terms of anthocyanins content for cultivation of elderberry in the Czech Republic the most suitable varieties are Mammut, Samyl, Reis aus Vossloch and Haschberg. In the second part of the experiments were determined total anthocyanins content in nine varieties of blue grape grown in the Mikulov region. For determination were used HPLC and pH-differential methods, as well as in the first part. The highest content of pigments was found in varieties Alibernet and Neronet. The present study focused on the suitability of the location pointed to vineyard south to southeast orientation plantings. At the end of the experimental part is a comparison of both methods of determination. Method using high performance liquid chromatography to provide very accurate results compared to less demanding pH-differential method of determination. This is recommended only for tentative determination of anthocyanins content in real samples.
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Possibilities of using of Vitis vinifera as a source of raw materials for cosmetic production
Hanáková, Pavlína ; Vítová, Eva (referee) ; Zemanová, Jana (advisor)
This bachelor thesis deals with preparation of extraction from various parts of grapevine and their consequent use in the manufacture of cosmetics. The theoretical part is focused on general characteristics of grapevine, its taxonomic classification, occurrence and cultivation. Subsequently, the chemical composition of grapevine parts and their uses in cosmetic, food and pharmaceutical industries is described. The final part is devoted to particular types of extractions and methods of determinativ of total phenolic substances. The experimental part deals with the optimization of the prepared extract in order to obtain the extract with the highest amount of total phenolic substances with respect to production costs. Factors such as selection of the appropriate solvent and extraction time are examined. 50% ethanol at the room temperature was found to be an optimal solvent. Finally, the physical and chemical properties, such as density, pH and refractive index were determined for the purpose of producing a material safety data sheet. The extract was processed into cosmetic products.
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Zhodnocení významu škod zvěří na vinicích v okolí obce Limbach
Hlavatovič, Ondrej
This bachelor thesis deals with the assessment of the importance of wildlife damage in vineyards. The vineyards on which the field investigations were carried out are located in the vicinity of the village of Limbach, located in the Pezinok district. The actual damage assessment was carried out using the walking method on three areas of interest using bite plots located at the beginning, middle and end of the vineyard. Subsequently, the economic impact of the damage on the individual areas of interest was quantified. The work also included monitoring of the intensity of vineyard use by wildlife, which was carried out using photo traps placed at the points of arrival of wildlife in the vineyard.
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Mechanizace sklizně vinné révy
Zborovský, Miroslav
The bachelor thesis deals with the mechanization of grape harvest in viticulture. It describes the development of mechanical grape harvest and focuses on specific types of machines currently available on the market as well as their historical background. The agrotechnical requirements necessary for establishing a vineyard with a vision for future mechanized operations are also evaluated. Using data from professional literature and technical specifications, relevant parameters that grape harvesting machines must meet are determined, followed by an assessment of two machines from the brands PELLENC and NEW HOLLAND.
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Possibilities of using of Vitis vinifera as a source of raw materials for cosmetic production
Hanáková, Pavlína ; Vítová, Eva (referee) ; Zemanová, Jana (advisor)
This bachelor thesis deals with preparation of extraction from various parts of grapevine and their consequent use in the manufacture of cosmetics. The theoretical part is focused on general characteristics of grapevine, its taxonomic classification, occurrence and cultivation. Subsequently, the chemical composition of grapevine parts and their uses in cosmetic, food and pharmaceutical industries is described. The final part is devoted to particular types of extractions and methods of determinativ of total phenolic substances. The experimental part deals with the optimization of the prepared extract in order to obtain the extract with the highest amount of total phenolic substances with respect to production costs. Factors such as selection of the appropriate solvent and extraction time are examined. 50% ethanol at the room temperature was found to be an optimal solvent. Finally, the physical and chemical properties, such as density, pH and refractive index were determined for the purpose of producing a material safety data sheet. The extract was processed into cosmetic products.
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Refinery and characterization of grape oil
Prchal, Miroslav ; Vítová, Eva (referee) ; Kovalčík, Adriána (advisor)
This bachelor thesis deals with the topic concerning the extraction of wine oil from grape seeds, the refining of the extracted oil and the characterization of grape oil. Grape oil was extracted from the grape seeds obtained from the harvest in September 2019 by the winery Vavricek (Brezi u Mikulova, Czech Republic). The received grape pomace was the mixture of Green Veltliner and Blanc Saugvinon. The oil was extracted from the separated seeds by using liquid extraction in n-Hexane. The extraction yields of grape oil were compared with the literature, involving the different extraction methods as well as different oil plants. For the refining of the grape oil have been applied more steps aiming for the removal of the lipophilic pigments. Different adsorbents of pigments have been applied. The purification efficiency has been proved by the investigation with the thin layer and the high-performance chromatography. Moreover, the gas chromatography was used to characterize the composition of the oil. Finally, the composition profile of the oil obtained by the liquid extraction before and after purification has been compared with the commercial grape oil, which has been received by cold pressing. The results of the work show that the winery waste produced in South Moravia is a valuable raw material, which can be used for the production and different products, e.g., grape oil and pigments (chlorophyll).
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