Microwave assisted hydro-distillation of essential oils from fresh ginger root (Zingiber officinale Roscoe)

Racoti, Anca and Buttress, A.J. and Binner, Eleanor and Dodds, Chris and Trifan, Adrian and Calinescu, Ioan (2017) Microwave assisted hydro-distillation of essential oils from fresh ginger root (Zingiber officinale Roscoe). Journal of Essential Oil Research . pp. 1-10. ISSN 1041-2905

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Abstract

A solvent free in situ microwave hydro-distillation method for extraction of essential oil from fresh ginger root it presented. Extraction was conducted in a TE10n single-mode microwave cavity and variable power 2 kW generator operating at 2.45GHz. The main extracted components identified by gas chromatography (GC) were Zingiberene, α-Curcumene, β-Sesquiphellandrene and α-Selinene. At energy inputs of 0.40 kWh/kg higher powers and shorter exposure times, crucially did not degrade the highly volatile components (α-Pinene and Camphene) despite providing the highest essential oil yields. Optimum processing conditions were found to be 1000W (0.40kWh/kg) for 5 min, for whole ginger root, where 0.35g oil/100g plant was obtained. This was compared to a yield of 0.2g/100g plant in 150 min in using conventional hydro-distillation and 0.3g/100g plant in 90 min using a multi-mode microwave cavity-based hydro-distillation.

Item Type: Article
Keywords: Ginger essential oil, microwave assisted extraction, solvent free, GC
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Chemical and Environmental Engineering
Identification Number: 10.1080/10412905.2017.1360216
Depositing User: Buttress, Dr Adam
Date Deposited: 30 Aug 2017 12:42
Last Modified: 30 Aug 2017 23:11
URI: http://eprints.nottingham.ac.uk/id/eprint/45234

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