Rapid Extraction of Essential Oil from Dried Cinnamomum cassia Presl and Forsythia suspensa(Thunb.)Vahl by Ionic Liquid Microwave Extraction |
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Authors: | Yujuan Zhai Shuo Sun Daqian Song Ye Sun Yupu Zhang He Liu Hanqi Zhang Prof Dr Aiming Yu |
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Institution: | College of Chemistry, Jilin University, Changchun, Jilin 130012, China |
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Abstract: | Ionic liquid (IL) was used as the microwave absorption medium to extract essential oils from dried Cinnamomum cassia Presl and Forsythia suspensa (Thunb.) Vahl, and the ionic liquid microwave extraction (ILME) was developed. Some experimental parameters for ILME were examined. The proposed method was compared with other methods, including hydrodistillation (HD), microwave hydrodistillation (MHD), solvent‐free microwave extraction (SFME) and improved solvent‐free microwave extraction (ISFME). Experimental results showed that compared with other extraction methods the ILME had some advantages, such as time‐saving, simplicity and usage of green solvents. The extraction time was less than 18 min at the microwave power of 440 W and 1.5 mL of ionic liquid was required. The constituents of essential oils obtained by the five methods are not obviously different. |
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Keywords: | ionic liquids microwave chemistry extraction method essential oils Cinnamomum cassia Presl Forsythia suspensa (Thunb ) Vahl |
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