Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Liquid-air partitioning of volatile compounds in coffee : dynamic measurements using proton-transfer-reaction mass spectrometry
Authors: Pollien, Philippe
Jordan, Alfons
Lindinger, Werner
Yeretzian, Chahan
DOI: 10.1016/S1387-3806(03)00197-0
Published in: International Journal of Mass Spectrometry
Volume(Issue): 228
Issue: 1
Pages: 69
Pages to: 80
Issue Date: 1-Aug-2003
Publisher / Ed. Institution: Elsevier
Publisher / Ed. Institution: Amsterdam
ISSN: 1387-3806
Language: English
Subjects: Partition coefficients; Coffee; Flavor
Subject (DDC): 663: Beverage technology
Abstract: Recently we introduced a dynamic approach to determine Henry's law constants (HLCs) of volatile organic compounds (VOCs) in water, and applied it to a series organic compounds dissolved in pure water. Here, we first discuss a further development of the original approach such that it can be applied to complex liquid food systems (coffee). Second, we examine the impact of non-volatile constituents on the HLC. More specifically, we evaluate the impact of non-volatile coffee constituents on the HLC of 2-methylpropanal, 3- and 2-methylbutanal, dimethylsulfide, dimethyldisulfide and ethyl-2-methylbutyrate. Finally, we demonstrate that the concentration on the VOC in solution does not affect the HLC, over the investigated concentration range of 10^-4 to 10 ppm.
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: Life Sciences and Facility Management
Appears in Collections:Publikationen Life Sciences und Facility Management

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