20.500.12556/DKUM-85438 Vpliv ostanka sladkorja ob zapiranju steklenic na kakovost in kemijsko sestavo vina pet-nat diplomsko delo Effect of bottle closing residual sugar on the quality and chemical composition of pet-nat wine d Pet-Nat je po zelo starem postopku (fr: Pétillant naturel) samo s primarno alkoholno fermentacijo pridelano motno peneče vino. V poskusu smo primerjali vpliv različne količine prisotnih sladkorjev v moštu ob zapiranju steklenic na nekatere fizikalne in kemijske parametre končnega produkta. Ugotovljeno je bilo, da višja količina ne povretega sladkorja v trenutku zapiranja steklenic statistično značilno vpliva na: višji pritisk v steklenici, na nekoliko višji prosti SO2, na nižji končni dejanski alkohol, na višji končni ostanek sladkorja po končani fermentaciji in na večje izgube vina ob odpiranju steklenic. Razlike v količini sladkorja ob polnjenju nimajo vpliva (ali imajo minimalen vpliv) na skupni SO2, na pH in titracijske kisline ter motnost vina po odpiranju. Pet-Nat is a cloudy sparkling wine produced using a very old process (fr: Pétillant naturel) only with primary alcoholic fermentation. In the experiment, the impact of different amounts of residual sugars present in the must upon closing the bottles on some physical and chemical parameters of the final product were evaluated. It was found that a higher amount of residual sugar at the moment of closing the bottles had a statistically significant effect on: higher pressure in the bottle, slightly higher free SO2, lower final actual alcohol, higher final residual sugars after fermentation and greater wine losses upon opening bottles. Differences in the amount of sugar at bottling had no (or minimal) effect on total SO2, on pH, total acidity and on the turbidity of the wine after opening. vino Pet-Nat kemijska sestava vina tlak v steklenici. 663.223:544.02(043.2)=163.6 true true false J. Podlesnik Slovenski jezik Angleški jezik Diplomsko delo/naloga 2023-08-29 18:32:02 2023-10-11 14:02:06 2023-10-12 03:07:10 0000-00-00 00:00:00 2023 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (VIII, 30 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 663.223:544.02(043.2)=163.6 167975171 VS_Podlesnik_Jernej_2023.pdf VS_Podlesnik_Jernej_2023.pdf 1 C96451C1E64CA7DBBC9A78BA34A59F02 c50c40930595ce12083c122adbe66fb8bfdebd4a6a420ad7c1a09c7750d08741 c7e5f4ac-4710-11ee-a526-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=170836 Fakulteta za kmetijstvo in biosistemske vede 0 0 0