文献类型：期刊文献

英文题名：Selection of deep eutectic solvents for extractive deterpenation of lemon essential oil

作者：Qin, Zexian[1];Cheng, Hongye[1];Song, Zhen[1];Ji, Lijun[1];Chen, Lifang[1];Qi, Zhiwen[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：350

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：;EI(收录号：20220411495330);WOS:【SCI-EXPANDED(收录号:WOS:000754567000013)】；

基金：The financial support from National Natural Science Foundation of China (21978096, 21861132019) and Natural Science Foundation of Shanghai (19ZR1412600) is greatly acknowledged.

语种：英文

外文关键词：Deep eutectic solvent; Lemon essential oil; Extractive deterpenation; COSMO-RS evaluation; Liquid-liquid extraction

摘要：Lemon essential oil is a complex mixture with citral as the primary terpenoid and limonene as the main terpene. Isolation of terpene and terpenoid, known as deterpenation, is crucial for improving the essential oil quality. In this work, liquid-liquid extraction with deep eutectic solvents (DESs) is utilized for lemon essential oil deterpenation. The performance of 77 DESs formed by seven hydrogen bond acceptors (HBA) with eleven hydrogen bond donors (HBD) is evaluated using COSMO-RS model and verified experimentally. The influences of HBA and HBD structures are investigated and explained by sigma-profile. Among 77 DESs, the DES composed of tetrabutylammonium bromide and levulinic acid, namely TBAB:LEA(1:2), is finally selected due to its better performance than the conventional solvent hydrous ethanol. The excellent performance of TBAB:LEA(1:2) in deterpenation of natural lemon essential oil suggests it is a promising solvent in the downstream processing of natural essential oil. (C) 2022 Elsevier B.V. All rights reserved.