Abstract

It is important to find pollution-free, eco-friendly solvents to replace traditional organic solvents. As a new class of medium, deep eutectic solvents (DESs) provide a source of breaking through the green engineering barrier and bring new opportunities for extraction using green chemistry. In this research, the methods of polyphenol extraction from Lilium davidii var. unicolor Salisb with different types of DESs such as choline chloride, betaine, and tetrabutyl ammonium chloride-based DESs were investigated. Compared with traditional extraction solvent systems using methanol, DESs, which are composed of choline chloride and citric acid, have a higher extractive yield. The extraction conditions of polyphenol from Lilium davidii var. unicolor Salisb were studied; moreover, macroporous adsorptive resin was shown to be an efficient way in which to recover polyphenolic compounds. Recovery and reuse of DESs were also analyzed. DESs as “green and designed” solvent can be used to extract polyphenolic compounds from natural products.

摘要

寻找无污染、环保的溶剂来替代传统的有机溶剂非常重要。作为一种新型介质，深共晶溶剂（DESs）提供了突破绿色工程障碍的来源，并为使用绿色化学进行提取带来了新机遇。本研究从百合中提取多酚的方法。研究了具有不同类型 DES 的单色Salisb，例如氯化胆碱、甜菜碱和四丁基氯化铵基 DES。与使用甲醇的传统萃取溶剂系统相比，由氯化胆碱和柠檬酸组成的DESs具有更高的萃取率。百合多酚的提取条件。单色研究了Salisb；此外，大孔吸附树脂被证明是回收多酚化合物的有效方法。还分析了 DES 的回收和再利用。作为“绿色和设计”溶剂的 DES 可用于从天然产物中提取多酚化合物。