Article (Scientific journals)
Unraveling the impact of the capsule material on the aroma of brewed coffee by headspace analysis using a HiSorb probe followed by reverse fill/flush flow modulation GC×GC-MS.
Eggermont, Damien; Spadafora, Natasha Damiana; Aspromonte, Juan et al.
2022In Analytical and Bioanalytical Chemistry, 45, p. 2511-2521
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Keywords :
Chemometrics; Coffee; Headspace (HS); HiSorb; Multidimensional comprehensive gas chromatography (GC×GC); Solid-phase microextraction (SPME); Biochemistry; Analytical Chemistry
Abstract :
[en] The present paper discusses the use of a high-concentration-capacity tool, HiSorb, to investigate the impact of capsule material on the aroma profile of espresso-brewed coffee. The specific high-concentration-capacity probe used is characterized by a sorbent volume (63 μL) intermediate between the solid-phase microextraction (SPME) fiber (0.6 μL) and the stir-bar sorptive extraction rod (126 μL). The extraction performance of the HiSorb was compared, in terms of both absolute signal and compound coverage, with both an equivalent sorbent (polydimethylsiloxane) and a divinylbenzene/carboxen/polydimethylsiloxane SPME fiber using both targeted and untargeted approaches. The HiSorb showed superior extraction compared with the SPME fibers. The HiSorb was then optimized in terms of extraction time and temperature and used to investigate the volatile profile of 23 espresso-brewed coffees prepared with capsules made of different materials-aluminum, compostable, and aluminum multilayer pack-prepared using a refillable capsule. Comprehensive two-dimensional gas chromatography equipped with a reverse fill/flush flow modulator and coupled to mass spectrometry was used to obtain a chromatographic fingerprint of the volatile profile of the brewed coffee. The data were aligned and compared using a tile-based approach, and the results were obtained by performing raw data mining within the same software platform. The data mining enabled the extraction of informative features responsible for the differentiation between the different capsule materials, showing a significant depletion in aroma intensity in the compostable capsule.
Disciplines :
Chemistry
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Eggermont, Damien  ;  Université de Liège - ULiège > TERRA Research Centre
Spadafora, Natasha Damiana;  Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121, Ferrara, Italy
Aspromonte, Juan;  Laboratorio de Investigación y Desarrollo de Métodos Analíticos, LIDMA, Facultad de Ciencias Exactas (Universidad Nacional de La Plata, CIC-PBA, CONICET), 1900, La Plata, Argentina
Purcaro, Giorgia  ;  Université de Liège - ULiège > TERRA Research Centre > Chimie des agro-biosystèmes
Language :
English
Title :
Unraveling the impact of the capsule material on the aroma of brewed coffee by headspace analysis using a HiSorb probe followed by reverse fill/flush flow modulation GC×GC-MS.
Publication date :
08 December 2022
Journal title :
Analytical and Bioanalytical Chemistry
ISSN :
1618-2642
eISSN :
1618-2650
Publisher :
Springer Science and Business Media LLC, Germany
Volume :
45
Pages :
2511-2521
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 12 December 2022

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