Abstract
In this study, an efficient ionic liquid (IL)-based microwave-assisted extraction (IL-MAE) was employed for the extraction of Heneicos-1-ene from coriander foliage. Quantification of Heneicos-1-ene was carried out using high-performance liquid chromatography. Parameters affecting extraction such as material to solvent ratio (1:10, 1:15, and 1:20), types of IL ([CH3(CH2)3]4NF, [BMIM][PF6], [BMIM][BF4], and [C6H5]4P[Br]), concentration of IL (0.1, 0.5, and 1.0 M), microwave power (200, 500, and 800 W), extraction temperature (50, 70, and 90 °C) and extraction time (2, 6, and 10 min) were evaluated. Response surface methodology was applied to determine the optimum levels of these parameters to get maximum yield. The optimal conditions were achieved at 800 W, 90 °C for 2 min at a material to solvent ratio of 1:10 using 0.1 M solution of [BMIM][BF4], to get maximum predicted yield of Heneicos-1-ene (412.8 mg/100 g) as against 408.5 ± 1.14 mg/100 g for experimental value with 0.991 correlation coefficient. IL-MAE resulted in 5.85 times higher yield as compared to the conventional method (69.77 ± 1.8 mg/100 g).
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