Transfer kinetics of labeled aroma compounds from liquid media into coffee beans during simulated wet processing conditions

Hadj Salem Fatma, Lebrun Marc, Mestres Christian, Sieczkowski Nathallie, Boulanger Renaud, Collignan Antoine. 2020. Transfer kinetics of labeled aroma compounds from liquid media into coffee beans during simulated wet processing conditions. Food Chemistry, 322:126779, 7 p.

https://doi.org/10.1016/j.foodchem.2020.126779

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Quartile : Q1, Sujet : CHEMISTRY, APPLIED / Quartile : Q1, Sujet : FOOD SCIENCE & TECHNOLOGY / Quartile : Q1, Sujet : NUTRITION & DIETETICS

Résumé : The transfer kinetics of three labelled compounds (butanal, 2-phenyethanol, isoamyl acetate) was studied from a liquid medium into the coffee beans during simulated wet processing using four media (M) (M1: contained dehulled beans, M2: contained demucilaginated beans, M3: contained depulped beans, M4: contained depulped beans with yeast). Trials were carried out at 25 °C, under agitation and for five time periods (0, 6, 12, 24 and 48 h), and then the labelled volatiles were analyzed by SPME-GC–MS. The three labelled molecules were transferred into the coffee beans with different mass transfer rates; reaching at 12hrs in the M4, 0.2 ± 0.03, 11.2 ± 0.66 and 1.3 ± 0.04 µg/g of coffee respectively for butanal, 2-phenyethanol and isoamyl acetate. The parchment resistance significantly affected the mass transfer of the 2-phenylethanol. Butanal and isoamyl acetate underwent metabolic reactions, which decreased their amount in the coffee beans. Furthermore, an interaction between molecules and the yeast was observed and decreased significantly the butanal's transfer.

Mots-clés Agrovoc : composé aromatique, fève de café

Mots-clés libres : Coffee fermentation, Aroma compounds, Transfer, Kinetics, Parchment resistance

Classification Agris : Q01 - Sciences et technologies alimentaires - Considérations générales

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

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