Solubility study of several polyphenolic compounds in pure and binary solvents

IF 2.2 3区工程技术 Q3 CHEMISTRY, PHYSICAL

Journal of Chemical Thermodynamics Pub Date : 2024-12-17 DOI:10.1016/j.jct.2024.107434

Iván Montenegro, Begoña González, Ángeles Domínguez, Elena Gómez

引用次数: 0

Abstract

In recent years, there has been great interest in exploring the recovery of polyphenols from natural resources. However, in studies that address this topic, results present high recovery yield but low selectivity in the extraction of these compounds. This work seeks to improve the selectivity of these processes by an appropriate selection of the solvents. To achieve this objective, the solubility of five polyphenolic compounds: trans-piceid, myricetin, quercetin, kaempferol and trans-resveratrol in pure methanol, ethyl acetate, n-propyl acetate, and butyl acetate were determined at T = 298.15 K at 0.1 MPa, as well as the solubility of quercetin and trans-piceid in three binary solvent mixtures (methanol + ethyl acetate, methanol + n-propyl acetate and methanol + butyl acetate). Experimental results for ternary systems were correlated with the combined nearly ideal binary solvent/Redlich-Kister (CNIBS/R-K) equation.

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几种多酚类化合物在纯和二元溶剂中的溶解度研究

近年来，人们对从自然资源中回收多酚的研究引起了极大的兴趣。然而，在针对这一主题的研究中，结果表明这些化合物的提取回收率高，但选择性低。这项工作旨在通过适当选择溶剂来提高这些过程的选择性。为了实现这一目标，在T = 298.15 K、0.1 MPa下测定了反式piceid、杨梅素、槲皮素、山奈酚和反式白藜芦醇五种多酚类化合物在纯甲醇、乙酸乙酯、乙酸正丙酯和乙酸丁酯中的溶解度，以及槲皮素和反式piceid在三种二元溶剂混合物（甲醇+乙酸乙酯、甲醇+乙酸正丙酯和甲醇+乙酸丁酯）中的溶解度。三元体系的实验结果与近理想二元溶剂/Redlich-Kister （CNIBS/R-K）联合方程相关联。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Chemical Thermodynamics 工程技术-热力学

CiteScore

5.60

自引率

15.40%

发文量

199

审稿时长

79 days

期刊介绍： The Journal of Chemical Thermodynamics exists primarily for dissemination of significant new knowledge in experimental equilibrium thermodynamics and transport properties of chemical systems. The defining attributes of The Journal are the quality and relevance of the papers published. The Journal publishes work relating to gases, liquids, solids, polymers, mixtures, solutions and interfaces. Studies on systems with variability, such as biological or bio-based materials, gas hydrates, among others, will also be considered provided these are well characterized and reproducible where possible. Experimental methods should be described in sufficient detail to allow critical assessment of the accuracy claimed. Authors are encouraged to provide physical or chemical interpretations of the results. Articles can contain modelling sections providing representations of data or molecular insights into the properties or transformations studied. Theoretical papers on chemical thermodynamics using molecular theory or modelling are also considered. The Journal welcomes review articles in the field of chemical thermodynamics but prospective authors should first consult one of the Editors concerning the suitability of the proposed review. Contributions of a routine nature or reporting on uncharacterised materials are not accepted.