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RESEARCH ARTICLE
Contents Vol 70(6)

Improved Extraction Yield of Citral from Lemon Myrtle Using a Cellulose-Dissolving Ionic Liquid

Koki Munakata A , Masahiro Yoshizawa-Fujita A , Masahiro Rikukawa A and Toyonobu Usuki A B
+ Author Affiliations
- Author Affiliations

A Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan.

B Corresponding author. Email: t-usuki@sophia.ac.jp

Australian Journal of Chemistry 70(6) 699-704 https://doi.org/10.1071/CH16460
Submitted: 4 August 2016  Accepted: 7 October 2016   Published: 4 November 2016

Abstract

Lemon myrtle is the richest natural source of citral, which has potential medicinal applications. In this study, citral was extracted from lemon myrtle using cellulose-dissolving ionic liquids (ILs), 1-ethyl-3-methylimidazolium methylphosphonate ([C2mim][(MeO)(H)PO2]), N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium chloride ([DEME]Cl), and N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium 2-methoxyacetate ([DEME][MOAc]). The extraction yield of citral obtained using ILs was up to 2.1 times higher than that obtained using ethanol. The ILs could be recycled and reused nine times for the extraction of citral. The present method provides a greener process when compared with conventional approaches and may be applicable for the extraction of other natural products.


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