Perspektivy využití matolin révy vinné ve zpracovatelských technologiích

The aim of the thesis was to evaluate the perspectives of grape marc use and processing. There are numerous possibilities of grape marc utilization. For example the production of grappa (pomace brandy), animal feed, compost, oils, etc. Practical part is focused on experimental determination of selected physical parameters (moisture, bulk density, proportion of stem in grapes, share of seeds and share of husks) for selected pomace samples. Those parameters were investigated in varieties Muller Thurgau, Grüner Veltliner, Chardonnay, Blaufrankisch, Cabernet Moravia and Dornfelder in both years, 2014 and 2015, characterized by very diverse weather conditions. The values expressed in the tables and results shown in graphs are further compared with literary sources. From the results the following values can be mentioned. Average marc humidity from all varieties was 65 % in 2014 and 66 % in 2015. Humidity in red varieties was slightly lower than in white varieties. The highest value of marc bulk density exhibited in both years variety Dornfelder (693 kg.m-3 in 2014, 724 kg.m-3 in 2015). Share of stem in selected cultivars in 2014 varied from 3.9 % (Chardonnay) to 6.2 % (Cabernet Moravia). The average value of marc seed share was 27 % in 2014 and 28.5 % in 2015. The average marc share of husk was 73 % in 2014 and 71,6 % in 2015