Extraction of phenolics from pomegranate residues: Selectivity induced by the methods
Autor: | Besma Khoualdia, Ben Ali Samia, Christelle Harscoat-Schiavo, Samir Hobloss, Pascale Subra-Paternault, Corinne Buré, Raphaëlle Savoire |
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Přispěvatelé: | Chimie et Biologie des Membranes et des Nanoobjets (CBMN), École Nationale d'Ingénieurs des Travaux Agricoles - Bordeaux (ENITAB)-Institut de Chimie du CNRS (INC)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS) |
Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
General Chemical Engineering
01 natural sciences pomegranate residue chemistry.chemical_compound 0404 agricultural biotechnology ellagic acid [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Physical and Theoretical Chemistry Sugar Punicalagin sugar content Ethanol Chromatography 010405 organic chemistry Chemistry Extraction (chemistry) 04 agricultural and veterinary sciences Condensed Matter Physics 040401 food science 0104 chemical sciences Polyphenol selective extraction punicalagin Composition (visual arts) Selectivity phenolic extracts Ellagic acid |
Zdroj: | Journal of Supercritical Fluids Journal of Supercritical Fluids, Elsevier, 2021, 176, pp.105300. ⟨10.1016/j.supflu.2021.105300⟩ |
ISSN: | 0896-8446 |
DOI: | 10.1016/j.supflu.2021.105300⟩ |
Popis: | International audience; Pomegranate industrial residues are rich in highly valuable phenolics, especially the bioactive punicalagin (PU) and ellagic acid (EA). The effect of extraction conditions on the recovery of polyphenols was investigated with special insight at the selectivity for EA and PU, along with the monitoring of sugar extraction. Macerations in ethanol and/or water, extractions by scCO2:ethanol mixtures and pressurized ethanol were compared on the basis of yields, kinetics and extract composition. High extraction yields up to 61g/100gresidue were obtained because of significant extraction of sugars evenwith CO2-based solvents. The TPC and sugar extraction yields were sensitive to the solvent polarity and pressure. Thirty-two phenolics were identified in most extracts whereas in scCO2:EtOH extracts purity of EA with respect to other phenolics was maximal, thus highlighting the selectivity of this technique. For the first time, extracts of high purity in EA and devoid of PU were produced in only one step. |
Databáze: | OpenAIRE |
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