WSEAS Transactions on Biology and Biomedicine
Print ISSN: 1109-9518, E-ISSN: 2224-2902
Volume 22, 2025
Influence of Transmembrane Pressure on the Retention of Bioactive Compounds and Alcohol Content in Red Wine Nanofiltration
Authors: , , ,
Abstract: Membrane nanofiltration technology is an efficient method for wine dealcoholization and concentration of various bioactive compounds and has a vast number of applications in wine production. To obtain optimal features of the obtained products, both the parameters and the mode of filtration, as well as the characteristics of the used filtration membrane, are of great importance. In this study, nanofiltration of the native Bulgarian red wine Mavrud via MaxiMem Prozesstechnik GmbH filtration system, completed with polymer membranes was performed. Rejection coefficients of ethanol and selected wine compоnents were measured and their increase with applied pressure (10 to 50 bar) was observed. Cross-flow flat sheet nanofiltration with polymer membranes was performed in concentration and diafiltration mode. Partial dealcoholization (5-8% EtOH) was obtained with good preservation of the remaining composition. Depending on the degree of dealcoholization and the characteristics of the membranes, a loss of 0 to 24% anthocyanins, 8 to 19% polyphenols, and 2 to 30% ORAC activity was observed.
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Keywords: dealcoholization, nanofiltration, polymeric membrane, reduced-alcohol wine, bioactive properties, transmembrane pressure, gas chromatography
Pages: 67-71