Untersuchung flüchtiger Inhaltsstoffe des Weinaromas: Beitrag zur Sortencharakterisierung von Riesling und Neuzüchtungen mit Riesling-Abstammung

Authors

  • A. Rapp
  • Corinna Volkmann
  • H. Niebergall

DOI:

https://doi.org/10.5073/itis.1993.32.171-178

Keywords:

wines, monoterpenes, alcohol, variety of vine, analysis

Abstract

Durch Anwendung der Korrelations- und Regressionsanalyse können aus der Vielzahl der Aromakomponenten des Weines einige wenige Komponenten (4 bis 6), ausgewählt werden, mit denen eine hochsignifikante analytische Trennung zwischen jeweils zwei Rebsorten möglich ist. Mit Hilfe der Diskriminanzanalyse können mit nur 15 Komponenten alle untersuchten Rebsorten (Riesling und die vom Riesling abstammenden Neuzüchtungen Müller-Thurgau, Scheurebe, Ehrenfelser, Kerner und Bacchus) trotz großer Variationsbreite des Probenmaterials (verschiedene Weinanbaugebiete, Jahrgänge, Reifegrade, unterschiedliche Weintechnologie, Kleingebinde, Großgebinde usw.) eindeutig voneinander abgetrennt werden. Diese analytische Sortendifferenzierung steht in Übereinstimmungmit der sensorischen Beurteilung: Ehrenfelser, Scheurebe und Bacchus sind wesentlich deutlicher vom Riesling zu unterscheiden als Müller-Thurgau und Kerner.

Analysis of volatile aroma compounds of grapevine: Charcterization of Riesling and Riesling derived cultivars

By means of regression analysis with the selection method of backward elimination of factors it was possible to find the right variables for the differentiation of some grapevine cultivars. Only 4 to 6 variables were necessary to achieve a highly significant separation between two varieties. Stepwise discriminant analysis revealed that 15 compounds allow the significant differentiation between Riesling and some of its descendants (Müller-Thurgau, Ehrenfelser, Kerner, Bacchus, Scheurebe) in spite of the great diversity of the investigated samples (e.g. different growing regions, vintages, degrees of maturity, technologies). In agreement with sensorial evaluation the analytical characterization distinguished the grape varieties Ehrenfelser, Scheurebe and Bacchus very clearly from Riesling while the varieties Müller-Thurgau and Kerner show a great similarity to Riesling.

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Published

2015-09-02

Issue

Vol. 32 No. 3 (1993): Vitis

Section

Article

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