Ionic liquid-based microwave-assisted extraction (MAE-IL) has been applied for the separation of essential oils (EOs) from Citrus sinensis var. Valencia peels. Two imidazolium ionic liquids, 1-ethyl-3-methyl imidazolium acetate ([C₂mim]OAc) and 1-butyl-3-methyl imidazolium chloride ([C₄mim]Cl), were investigated for extraction efficiency, thermal behavior of the process, and chemical composition of the EOs obtained. During extractions, two different concentrations of ionic liquids (ILs) were studied (5% or 10 %), and the proposed MAE-IL was evaluated in comparison with usual microwave-assisted extraction (MAE) using water as solvent. Results indicated that both concentrations of ILs influenced EO extraction, thermal behavior, and chemical composition. However, [C₂mim]OAc was more efficient, increasing extraction velocity by 10 times, enhancing extraction efficiency of EOs (39 %), and increasing the presence of oxyterpene compounds in the EOs. However, the great ability of ILs to interact with microwaves had an impact on the thermal history of the sample, reaching almost 110 °C, promoting the presence of compounds related to thermal effect.

基于离子液体的微波辅助萃取（MAE-IL）已用于从柑桔中分离精油（EOs）。瓦伦西亚果皮。两种咪唑鎓离子液体，乙酸1-乙基-3-甲基咪唑鎓（[C ₂ mim] OAc）和1-丁基-3-甲基咪唑鎓氯化物（[C ₄研究了mim] Cl）的萃取效率，工艺的热行为以及所得EO的化学组成。在萃取过程中，对两种不同浓度的离子液体（ILs）进行了研究（5％或10％），并与以水为溶剂的常规微波辅助萃取（MAE）进行了评估。结果表明，IL的两种浓度均会影响EO的萃取，热行为和化学成分。但是，[C ₂mim] OAc更有效，将萃取速度提高了10倍，提高了EOs的萃取效率（39％），并增加了EOs中氧萜化合物的存在。但是，离子液体与微波相互作用的强大能力会影响样品的热历史，达到近110°C，从而促进了与热效应相关的化合物的存在。