Please use this identifier to cite or link to this item:
Title: Recovery of phenolic compounds from wine lees using green processing: Identifying target molecules and assessing membrane ultrafiltration performance
Author: Mir-Cerdà, Aina
Carretero, Iris
Coves, José Rubén
Pedrouso, Alba
Castro-Barros, Celia María
Alvarino, Teresa
Cortina, José Luis
Saurina, Javier
Granados i Juan, Mercè
Sentellas, Sonia
Keywords: Polifenols
Issue Date: 20-Jan-2023
Publisher: Elsevier B.V.
Abstract: Winery wastes are rich in polyphenols with high added value to be used in cosmetics, pharmaceuticals, and food products. This work aims at recovering and purifying the polyphenolic fraction occurring in the malolactic fermentation lees generated during the production of Albariño wines. Phenolic acids, flavonoids, and related compounds were recovered from this oenological waste by green liquid extraction using water as the solvent. The resulting extract solution was microfiltered to remove microparticles and further treated by ultrafiltration (UF) using membranes of 30 kDa and 5 kDa molecular weight cut-offs (MWCOs). The feed sample and the filtrate and retentate solutions from each membrane system were analyzed by reversed-phase liquid chromatography (HPLC) with UV and mass spectrometric (MS) detection. The most abundant polyphenols in the extracts were identified and quantified, namely: caftaric acid with a concentration of 200 µg g−1 and trans-coutaric acid, cis-coutaric acid, gallic acid, and astilbin with concentrations between 15 and 40 µg g−1. Other minor phenolic acids and flavanols were also found. The UF process using the 30 kDa membrane did not modify the extract composition, but filtration through the 5 kDa poly-acrylonitrile membrane elicited a decrease in polyphenolic content. Hence, the 30 kDa membrane was recommended to further pre-process the extracts. The combined extraction and purification process presented here is environmentally friendly and demonstrates that malolactic fermentation lees of Albariño wines are a valuable source of phenolic compounds, especially phenolic acids.
Note: Reproducció del document publicat a:
It is part of: Science of the Total Environment, 2023, vol. 857, num. Part 3, p. 159623
Related resource:
ISSN: 0048-9697
Appears in Collections:Articles publicats en revistes (Institut de Recerca en Nutrició i Seguretat Alimentària (INSA·UB))
Articles publicats en revistes (Enginyeria Química i Química Analítica)

Files in This Item:
File Description SizeFormat 
726514.pdf754.75 kBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons