GRAPE MATURITY OF RHEIN RIESLING CULTIVAR AND SYNTHESIS OF ATYPICAL AGEING AROMA PRECURSORS
The research on forming atypical aging off-flavor in wines (UTA) was revealed a significant correlation between the UTA , the concentration of 2-aminoacetophenones (AAP) and the wines produced from grapes affected by stress (lack of water or nitrogen supply), wines from grapes grown in high yielding...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Faculty of Agrobitechnical Sciences Osijek
2014-12-01
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| Series: | Poljoprivreda |
| Subjects: | |
| Online Access: | http://161.53.194.251/~poljo/upload/publications/poljoprivreda-20-2-6.pdf |
| Summary: | The research on forming atypical aging off-flavor in wines (UTA) was revealed a significant correlation between the UTA , the concentration of 2-aminoacetophenones (AAP) and the wines produced from grapes affected by stress (lack of water or nitrogen supply), wines from grapes grown in high yielding vineyards or earlier harvested grapes. The aim of this study was to explore the different grape ripeness and synthesis of indole-3-acetic acid and tryptophan in must and wine of white cultivar Rhine Rieslin (Vitis vinifera L.). Treatments in the research have been the two periods of the grape harvesting dates (regular and late harvesting) from two different locations (Mladice and Hrnjevac). Indole-3-acetic acid and tryptophan in must and wine were determined by high performance liquid chromatography with fluorescence detector. As the process of ripening was going on the concentration of indole-3-acetic acid and tryptophan in must and wines have been reduced regardless the year of research and vineyards positions. Wines produced from late harvested grapes have a lower possibility of the appearance of atypical aroma aging effect compared to the regular harvest. |
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| ISSN: | 1330-7142 1848-8080 |