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Studie technologického vybavení pro zpracování matolin ve vybraném vinařském provozu
Musil, Miroslav
The bachelor thesis describes the characteristics of wine grapes and grapes. The process of processing matolin and their possible use was described. As a basic issue was solved the technological equipment for processing of matolin, focusing on separation of grapevine seeds and subsequent pressing of oil. For each technological operation, possible variants of machines were selected. The present state of grape processing is presented both in the Czech Republic and in selected wine-growing operations. The net yield of seeds for subsequent pressing of grape oil ranges from 5 to 7% of the weight of the processed grapes. Pure grape-oil molding, ie. the amount of oil after filtration varies between about 5-9%, depending on the grape variety. of one kilogram of wine kernels can be pressed about 50-90 grams of grape oil. The cost of processing one kilogram of grape seed and pressing grape seed oil from wine grains is 26,40 CZK / kg. At the selling price of crude oil CZK 300 it is more than ten times the profit. The created design of the technological equipment for the processing of matolin is complemented by the capacities of individual machines. At the end, the cost of grape oil production and the cost of processing grapevine seeds for the medium and small vintages are calculated. The market price of the treated oil was determined on the basis of a market survey, see Tab. 5, is about 1300 CZK / kg. It is necessary to take into account that the price already reflects the final adjustments like, directing, producer's profit, dealer's sales margin, marketing costs and more. The selected winemaking enterprise has a gross profit of CZK 385,000. The investment costs for the assembly line for the processing of matolin are CZK 850,000. The return on investment is 2.2 years. It was recommended to separate the grapevine seeds and press the grape oil. For a small winery, the gross profit is CZK 139,000. The investment costs for the assembly of the processing line for matolin (about 1/3 times less than for the medium wine-growing enterprise) are CZK 570,000. The return on investment is 4.1 years. Rather, it was not recommended to separate the grapevine and grape seed.
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Sekundární produkty révy vinné a vína
Staňková, Andrea
The theoretical part deals with the description of each byproducts, their production, use in kitchen and health effects. There are mentioned products known, easily obtainable on the Czech market, but also products that are gradually getting into awareness of customers and begin to be sought. The practical part dealt with the production of wine jelly and compare the results with commercially available products. When comparing the content of alcohol, it was lower in the experimental samples, because of longer exposure to heat. In commercial products was measured content of alcohol and sugar and the results were compared with the values listed on labels. These values were different. Often we meet with bad naming of individual products. Grape jelly is produced from wine, and the wine jam is made of wine must.
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