Monitoring anthocyanin degradation in Hibiscus sabdariffa extracts with multi-curve resolution on spectral measurement during storage

Achir Nawel, Sinela André Mundombe, Mertz Christian, Fulcrand Hélène, Dornier Manuel. 2019. Monitoring anthocyanin degradation in Hibiscus sabdariffa extracts with multi-curve resolution on spectral measurement during storage. Food Chemistry, 271 : 536-542.

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

Résumé : This study aims to monitor composition changes in an anthocyanin-rich beverage during storage by the means of UV–VIS measurements associated with a multi-curve resolution procedure. Hibiscus sabdariffa extract was stored at 37 °C for 50 days and UV–VIS spectra were measured on the extract and the fractions of the extract every 5 days. MCR was carried out in two steps, first with the fraction and then the extract spectra. The results enabled the main polyphenols initially present to be identified, anthocyanins and chlorogenic acid, but also found the nature of the main degradation products: the polymers from anthocyanin condensation and scission products. In addition, comparison with HPLC analysis results showed that the MCR procedure recovered the correct shapes of the concentration profiles particularly of anthocyanin and polymer kinetics during storage. This work gives perspective for the use of a rapid and efficient technique to monitor pigment-rich beverage processing or storage.

Mots-clés Agrovoc : Hibiscus sabdariffa, stockage, anthocyane, dégradation chimique, système de contrôle, polyphénol

Mots-clés géographiques Agrovoc : Sénégal

Mots-clés libres : MCR-ALS, Delphinidin-3-O-sambubioside, Cyanidin-3-O-sambubioside, Polyphenols, Degradation kinetics, Condensation

Classification Agris : Q02 - Traitement et conservation des produits alimentaires

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

Auteurs et affiliations

• Achir Nawel, Montpellier SupAgro (FRA) - auteur correspondant
• Sinela André Mundombe, Instituto Superior de Tecnologia Agro-Alimentar de Malanje (AGO)
• Mertz Christian, CIRAD-PERSYST-UMR Qualisud (FRA)
• Fulcrand Hélène, INRA (FRA)
• Dornier Manuel, Montpellier SupAgro (FRA) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/593278/)

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