Impact of Rootstock, Clonal Selection, and Berry Size of Vitis vinifera sp. Riesling on the Formation of TDN, Vitispiranes, and Other Volatile Compounds
| Autor: | Pascal Wegmann-Herr, Hans-Georg Schmarr, Michael Ziegler, Peter Winterhalter, Recep Gök, Ulrich Fischer |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Wine biology Chemistry 010401 analytical chemistry Chemie Vitispiranes General Chemistry Berry biology.organism_classification 01 natural sciences 0104 chemical sciences Horticulture General Agricultural and Biological Sciences Rootstock Vitis vinifera Carotenoid breakdown Aroma 010606 plant biology & botany Clonal selection |
| Zdroj: | Journal of Agricultural and Food Chemistry. 68:3834-3849 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/acs.jafc.0c00049 |
| Popis: | The C13-norisoprenoid aroma compounds 1,1,6-trimethyl-1,2-dihydronaphthalene (TDN) and biosynthetically related vitispirane (VS) are important contributors to the varietal aroma of Riesling wines and are released from glycosidically bound carotenoid breakdown products during bottle aging. TDN is appreciated by numerous winemakers, particularly in aged Riesling wines. Higher levels of TDN, however, are perceived as a "petrol" off-flavor, which is expected to increase due to ongoing climate change. Wines produced from the same Riesling clone, which was grafted on six different rootstocks, varied significantly throughout two vintages in respect to their concentrations of free and bound TDN and VS as well as other volatiles. Over three vintages, the same compounds differed significantly among wines made from eight Riesling clones grafted on the same rootstock. Genetically determined loose grape clusters favored the formation of TDN and yielded wines of stronger sensory petrol intensity. Berry size, however, had no relevant impact on TDN and VS formation. |
| Databáze: | OpenAIRE |
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