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J Agric Food Chem

Title:		Uptake and Release of Aroma Compounds by an Ethylene Propylene Diene Monomer Rubber Sealing Polymer: Investigating Aroma Carryover in a Model Wine System
Author(s):		Gottmann J; Vestner J; Muller D; Schuster J; Fischer U;
Address:		"Dienstleistungszentrum Landlicher Raum (DLR) Rheinpfalz, Institute for Viticulture and Oenology, Breitenweg 71, Neustadt an der Weinstrasse 67435, Germany. Department of Chemistry, Division of Food Chemistry and Toxicology, University of Technology Kaiserslautern, Kaiserslautern 67663, Germany. Kaiserslautern University of Applied Sciences, Institut fur Kunststofftechnik Westpfalz (IKW), Carl-Schurz-Str. 10-16, Pirmasens 66953, Germany"
Journal Title:		J Agric Food Chem
Year:		2021
Volume:		20210917
Issue:		38
Page Number:		11382 - 11394
DOI:		10.1021/acs.jafc.1c04565
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"Aromatized wines and regular table wines are often filled on the same bottling line. Sealing polymers in the filling line absorb volatiles from aromatized wines and may migrate due to insufficient cleaning into the subsequently bottled regular wine. Unintentional carryover of volatiles may lead to accusation of illegal aromatization of wine. Absorption, cleaning efficacy, and migration of volatiles into ethylene propylene diene monomer rubber were investigated in a model system. Direct thermal desorption-gas chromatography-mass spectrometry analysis of seven aroma compounds monitored variation in the polymer (mug/g). Absorption of volatiles was mostly driven by their octanol/water partition coefficients. Cleaning of polymers removed 11 to 62% of the absorbed volatiles. Subsequent immersion of cleaned polymers into model wine revealed migration of 20 to 57% of the remaining volatiles. Sensory tests suggested the impact of transferred volatiles into subsequent model wine. For alpha-ionone, an odor activity value of 1.03 indicated a potential sensory impact"
Keywords:		Alkenes Ethylenes Odorants/analysis Polymers Rubber *Volatile Organic Compounds/analysis *Wine/analysis Gc-ms absorption aroma compounds cleaning migration odor aroma value wine;
Notes:		"MedlineGottmann, Jorg Vestner, Jochen Muller, David Schuster, Jens Fischer, Ulrich eng 2021/09/18 J Agric Food Chem. 2021 Sep 29; 69(38):11382-11394. doi: 10.1021/acs.jafc.1c04565. Epub 2021 Sep 17"