Journal
AUSTRALIAN JOURNAL OF CHEMISTRY
Volume 71, Issue 2-3, Pages 127-132Publisher
CSIRO PUBLISHING
DOI: 10.1071/CH17406
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The effect of the addition of four different halide-free ionic liquids (ILs) during the maceration step on Foeniculum vulgare essential oil (EO) extraction by hydrodistillation was investigated. The EO yields and their chemical composition were also evaluated, as well as the possibility of reusing the IL aqueous solutions. Although all the investigated ILs were able to increase EO yields, 1,3-dimethylimidazolium dimethylphosphate (IL1) showed the best performance. In particular, the 1 : 1 IL1-water mixture increased the EO yield by, similar to 40%, even after three reuses, maintaining practically the same volatile profile.
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