数字农科院2.0

Switchable deep eutectic solvents for the extraction of phlorizin and trilobatin from sweet tea ( Lithocarpus litseifolius (Hance) Chun)

文献类型： 外文期刊

作者： Yang, Weijie;Wang, Runping;Wang, Lingqi;Tan, Zhijian

作者机构：

关键词： Deep eutectic solvents;Flavonoids;Recycle and reuse;Sweet tea;Switchable solvents

期刊名称： SEPARATION AND PURIFICATION TECHNOLOGY

ISSN： 1383-5866

年卷期： 2024 年 356 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Switchable deep eutectic solvents (SDESs) have recently been developed to improve the recovery and reuse of the extractants. In this work, temperature-induced SDESs were prepared and used for the extraction of flavonoids (representative phlorizin and trilobatin) from sweet tea ( Lithocarpus litseifolius (Hance) Chun). These SDESs solution can switch between solution and sediment depending on the temperature, and the phase diagram of SDESs solution had been drawn. Their temperature-responsive characteristics were studied by various characterizations, including variable-temperature FT-IR, variable-temperature H-1 NMR, and variable-temperature dynamic light scattering (DLS). SDES-1 (Benzamide: Malic acid = 2:1) was screened as the optimal extractant, and the major factors affecting the extraction process were studied by single-factor experiments and optimized by response surface methodology (RSM). The extraction yields for phlorizin and trilobatin were 114.72 and 12.56 mg/g, respectively. Moreover, the recoveries for phlorizin and trilobatin reached 98.46 % and 94.64 %, respectively. This study thus provides an environmentally sound strategy for extracting bioactive compounds from plant resources.

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