Karabegović Ivana, Malićanin Marko, Popović Nikola, Stamenković Stojanović Sandra, Lazić Miodrag, Stanojević Jelena, Danilović Bojana
Faculty of Technology, University of Niš, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia.
Faculty of Agriculture, University of Niš, Kosančićeva 4, 37000 Kruševac, Serbia.
Foods. 2022 Jun 29;11(13):1935. doi: 10.3390/foods11131935.
The enological potential of two previously characterized indigenous yeast isolates, S-2 and WB-1, in pure and sequential inoculation with commercial yeast QA23 were analyzed in industrial-scale vinification of the grape variety Tamjanika. Their contribution to the quality and aroma profile was investigated by quantifying volatile compounds and wine sensory evaluation. Both yeast isolates were able to complete alcoholic fermentation, to reduce ethanol concentration up to 1.06% / (in monoculture) in comparation to QA23, and to enhance aroma and sensory profile. Based on calculated odor activity values (OAV), p-cymene, ethyl hexanoate, ethyl octanoate, and ethyl decanoate were the major aroma volatile compounds in all Tamjanika wine samples. Analyzed yeast strains significantly affected relative contribution of volatile compounds and can be considered responsible for the differences and uniqueness of the obtained wine samples. Besides confirmation of good enological and fermentative characteristics, selected isolates can be characterized as high ester-producing strains with potential to enhance the floral and fruity aromas of wine. The present study represents a further step toward the use of indigenous yeast isolates at industrial-scale fermentation in order to ensure the regional signature of Tamjanika wine.
在塔姆亚尼卡葡萄品种的工业规模酿酒过程中，分析了两种先前已鉴定的本土酵母菌株S-2和WB-1与商业酵母QA23进行纯种接种和顺序接种时的酿酒潜力。通过定量挥发性化合物和葡萄酒感官评价，研究了它们对葡萄酒品质和香气特征的贡献。与QA23相比，两种酵母菌株均能完成酒精发酵，将乙醇浓度降低至1.06%（单培养），并改善香气和感官特征。根据计算出的气味活性值（OAV），对伞花烃、己酸乙酯、辛酸乙酯和癸酸乙酯是所有塔姆亚尼卡葡萄酒样品中的主要挥发性香气化合物。分析的酵母菌株显著影响挥发性化合物的相对含量，可认为是所获得葡萄酒样品差异和独特性的原因。除了证实良好的酿酒和发酵特性外，所选菌株可被表征为高产酯菌株，具有增强葡萄酒花香和果香的潜力。本研究朝着在工业规模发酵中使用本土酵母菌株迈出了进一步的一步，以确保塔姆亚尼卡葡萄酒的地域特色。
