Title: Investigations on the aroma of cocoa pulp (theobroma cacao L.) and its influence on the odor of fermented cocoa beans
Authors : Chetschik, Irene
Kneubühl, Markus
Chatelain, Karin
Schlüter, Ansgar
Bernath, Konrad
Hühn, Tilo
Published in : Journal of agricultural and food chemistry
Volume(Issue) : 66
Issue : 10
Pages : 2467
Pages to: 2472
Publisher / Ed. Institution : American Chemical Society
Issue Date: 2017
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Theobroma cacao L.; Aroma extract dilution analysis; Aroma formation in cocoa; Cocoa fermentation; Cocoa pulp odorants; Cacao; Fermentation; Odorants; Saccharomyces cerevisiae; Gas Chromatography-Olfactometry
Subject (DDC) : 664: Food technology
Abstract: The odor-active constituents of cocoa pulp have been analyzed by aroma extract dilution analysis (AEDA) for the first time. Pulps of three different cocoa varieties have been investigated. The variety CCN51 showed low flavor intensities, in terms of flavor dilution (FD) factors, in comparison to varieties FSV41 and UF564, for which floral and fruity notes were detected in higher intensities. To gain first insights on a molecular level of how the cocoa pulp odorants affected the odor quality of cocoa beans during fermentation, quantitative measurements of selected aroma compounds were conducted in pulp and bean at different time points of the fermentation. The results showed significantly higher concentrations of 2-phenylethanol and 3-methylbutyl acetate in pulp than in the bean during the different time steps of the fermentation, whereas the reverse could be observed for the odorants linalool and 2-methoxyphenol. The findings of this study constitute a basis for further investigations on the aroma formation of cocoa during fermentation.
Departement: Life Sciences and Facility Management
Publication type: Article in scientific Journal
DOI : 10.1021/acs.jafc.6b05008
ISSN: 0021-8561
1520-5118
URI: https://digitalcollection.zhaw.ch/handle/11475/10527
Appears in Collections:Publikationen Life Sciences und Facility Management

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