The use of cation exchange resins in wines: Effects on pH, tartrate stability, and metal content [El uso de resinas de intercambio catiónico en vinos: Efectos sobre el pH, la estabilidad tartárica, y el contenido de metales]
MetadataShow full item record
Treating wines with cation exchange resins allows the reduction of pH and contributes to limiting the formation of tartrate salts by exchanging cations such as potassium with hydrogen ions. This manuscript summarizes the results of a series of laboratory and winery-scale trials performed with the aim of evaluating the ion exchange process and its effects on the chemical composition of the treated samples. The laboratory-scale results showed that both the procedure employed for the activation of resins and the chemical composition of the wines affected the extent of the chemical changes occurring during the treatment. As such, the winery-scale trials showed that the resin-treated wines have significantly lower pH, higher total acidity, less tartrate formation (measured by weight), and a reduced amount of most metals analyzed. Wine samples blended with approximately 20% of cation exchange-treated samples (by volume) showed no signs of tartrate instability when assessed by a quick qualitative cold test. © 2018, Pontificia Universidad Catolica de Chile, Facultad de Agronomia e Ingenieria Forestal. All rights reserved.
Showing items related by title, author, creator and subject.
Utilization of industrial by-product fungal biomass from Aspergillus niger and Fusarium culmorum to obtain biosorbents for removal of pesticide and metal ions from aqueous solutions (2020) Cabrera-Barjas, Gustavo; Gallardo, Francisco; Nesic, Aleksandra R.; Taboada, Edelio; Marican, Adolfo; Mirabal-Gallardo, Yaneris; Ávila-Salas, Fabián; Delgado, Nacarid; de Armas-Ricard, Merly; Valdés, Oscar (Elsevier Ltd, 2020-10)In this work, Aspergillus niger and Fusarium culmorum cell wall by-products were chosen as microbial sources for chitin and chitosan production. Both polysaccharides were characterized by FTIR and 13C-CPMAS NMR, but GPC ...
Selective and efficient arsenic recovery from water through quaternary amino-functionalized silica (2020) Valdés O.; Marican A.; Mirabal-Gallardo Y.; Santos L.S. (MDPI AG, 2018)
Multi-element analysis and differentiation of Chilean wines using mineral composition and multivariate statistics [Análisis y diferenciación de vinos Chilenos empleando su composición de elementos metálicos y técnicas de estadística multivariada] (2020) Mirabal-Gallardo Y.; Caroca-Herrera M.A.; Muñoz L.; Meneses M.; Laurie V.F. (Pontificia Universidad Catolica de Chile, Facultad de Agronomia e Ingenieria Forestal, 2018)