Title: The elusiveness of coffee aroma : new insights from a non-empirical approach
Authors : Munro, Lindsey J.
Curioni, Alessandro
Andreoni, Wanda
Yeretzian, Chahan
Watzke, Heribert
Published in : Journal of agricultural and food chemistry
Volume(Issue) : 51
Issue : 10
Pages : 3092
Pages to: 3096
Publisher / Ed. Institution : American Chemical Society
Publisher / Ed. Institution: Columbus
Issue Date: 10-Apr-2003
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Aroma; Computational modeling; Coffee
Subject (DDC) : 663: Beverage technology
Abstract: Aroma is central to a pleasurable eating/drinking experience but is one of the most labile components of food. Coffee is an outstanding example. Attempts to avoid or control aroma degradation are often frustrated by ignorance of the microscopic mechanisms that are responsible for it. One of the processes most frequently invoked is radical formation, yet the identity of the radicals and their involvement in aroma degradation are poorly understood at the molecular level. Here a step forward in the fundamental understanding of this complex problem is taken by identifying the most relevant radicals and their products using first-principles calculations. Over 100 radicals originating from key aroma compounds found in coffee and other foods have been studied and classified according to an unambiguous criterion: their thermodynamic stability relative to common radical sources. This classification scheme predicts that most aroma molecules are resistant to both peroxidation and attack from phenolic antioxidants but are unstable with respect to radicals such as .OH. Dimers--generated from radical reactions--were also considered, and the most volatile species, which may further contribute to coffee aroma degradation, were focused on. Those--which are very few indeed--that have this potential have been identified.
Departement: Life Sciences und Facility Management
Publication type: Article in scientific Journal
DOI : 10.1021/jf0261607
ISSN: 0021-8561
URI: https://digitalcollection.zhaw.ch/handle/11475/5423
Appears in Collections:Publikationen Life Sciences und Facility Management

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.