Simultaneous Extraction of Water and Essential Oils from Citrus Leaves and Peels Using Liquefied Dimethyl EtherRintaro Hoshino1, Wahyudiono1, Siti Machmudah1,2, Hideki Kanda1,3* and Motonobu Goto1
- *Corresponding Author:
- Hideki Kanda
Department of Chemical Engineering
Nagoya University, Furo-cho, Chikusa
Nagoya 464-8603, Japan
E-mail: [email protected]
Received date: June 19, 2014; Accepted date: August 20, 2014; Published date: August 23, 2014
Citation: Hoshino R, Wahyudiono, Machmudah S, Kanda H, Goto M (2014) Simultaneous Extraction of Water and Essential Oils from Citrus Leaves and Peels Using Liquefied Dimethyl Ether. J Nutr Food Sci 4:301. doi: 10.4172/2155-9600.1000301
Copyright: © 2014 Hoshino R, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Most of the residues after extracting juice from the citrus fruit are discarded, although they contain valuable substances such as flavonoids and essential oils. While most of the citrus flavonoids are present in the fruit peel, various valuable substances are also contained in the leaves. Moreover, the leaves and peels of citrus plants contain a large amount of moisture; hence, dewatering is essential for extracting valuable substances. Herein, we used liquefied dimethyl ether (DME) as the extractant for dewatering and extraction of valuable substances. With this process, >70% of the water from the wet samples was removed and valuable substances were isolated from the wet samples. The properties of the original and dewatered samples and the extract were evaluated using high-performance liquid chromatography. While the essential oils could be extracted, it was not possible to extract flavonoids by the liquefied DME method.