Please use this identifier to cite or link to this item:
http://hdl.handle.net/1843/43052| Type: | Artigo de Periódico |
| Title: | Liquid-liquid equilibria in aqueous two-phase ethanol/salt systems at different temperatures and their application to anthocyanins extraction |
| Authors: | Ana Clara Rocha Caldeira Wanderley Filho Lopes de França Attilio Converti William James Nogueira Lima Fábio Coelho Sampaio Janaína Teles de Faria |
| Abstract: | Aqueous two-phase systems (ATPS) are formed by mixtures of chemical species that, under certain conditions, separate into two immiscible phases, with water as the major component in global terms and, at lower concentrations, polymers, salts, ionic liquids and alcohols, depending on the system type. Different parameters influence ATPS equilibrium such as temperature, alcohol carbon chain size, salt type, pH, etc. The present work aimed to obtain the binodal curves for ATPS made up of ethanol, sodium citrate/ammonium sulfate and water at different temperatures (15, 25 and 35 °C) as well as to evaluate the potential of the ethanol/ammonium sulfate system in anthocyanins partition. The results showed that the increase in temperature did not alter the biphasic region in the temperature range investigated, not influencing the formation of phases. Nonlinear equations were satisfactorily fitted to binodal curves data, except for sodium citrate-containing ATPS at 15 °C. Higher concentration of the overall mixture resulted in longer tie-line of ammonium sulphate-containing ATPS. Higher values of partition coefficient and recovery yield of Syzygium cumini fruit anthocyanins were obtained at longer tie-lines. |
| Subject: | Regra das fases Equilíbrio líquido-líquido |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Rights: | Acesso Aberto |
| metadata.dc.identifier.doi: | 10.1590/fst.32218 |
| URI: | http://hdl.handle.net/1843/43052 |
| Issue Date: | 2019 |
| metadata.dc.url.externa: | http://dx.doi.org/10.1590/fst.32218 |
| metadata.dc.relation.ispartof: | Food Science and Technology |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Liquid-liquid equilibria in aqueous two-phase ethanol-Janaína Teles de Faria.pdf | 1.09 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.