Effect of lithium salts addition on the ionic liquid based extraction of essential oil from Farfarae Flos

In this study, an ionic liquids (ILs) based extraction approach has been successfully applied to the extraction of essential oil from Farfarae Flos, and the effect of lithium chloride was also investigated. The results indicated that the oil yields can be increased by the ILs, and the extraction time can be reduced significantly (from 4 h to 2 h), compared with the conventional water distillation. The addition of lithium chloride showed...