Issue |
BIO Web of Conferences
Volume 7, 2016
39th World Congress of Vine and Wine
|
|
---|---|---|
Article Number | 02018 | |
Number of page(s) | 3 | |
Section | Oenology | |
DOI | https://doi.org/10.1051/bioconf/20160702018 | |
Published online | 26 October 2016 |
Determination and elimination of rotten grape aroma by filter layers with selective adsorbers
Höhere Bundeslehranstalt und Bundesamt für Wein- und Obstbau, Wiener Straße 74, 3400 Klosterneuburg, Österreich
The most important mould associated substances like geosmine, 2-methylisoborneol, 1-octen-3-ol in wines of different grape varieties from Austria and also from other foreign countries were analysed by a HS-SPME GC-MS method. These substances were also determined in healthy and rotten grapes. All together, 391 wine-samples and 69 grape samples were examined.
The study of rotten and healthy grapes found out a level of geosmin up to 20 ng/L, 1-octene-3-ol concentration up to 700 μg/L and 2-heptanol level up to 9 μg/L. The geosmin concentration of the 391 analyzed wines extended from 1-44 ng/L. The detected level of 1-octene-3-ol ranged from 1 μg/L to 23 μg/L. The determined concentration of 2-heptanol ranged from 1 μg/L up to 38 μg/L. The test with the filter layer Fibrafix TX-R was performed with nine layers á 20 × 20 cm (3.6 m2) and a quantity of 625 liters wine. The filtering achieved a significant reduction of the start concentration of 60 ng/L geosmin down to only 6 ng/L (average value of 600l).
© The Authors, published by EDP Sciences 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.