Solvent-free microwave extraction of essential oil from aromatic herbs: From laboratory to pilot and industrial scale - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Food Chemistry Year : 2014

Solvent-free microwave extraction of essential oil from aromatic herbs: From laboratory to pilot and industrial scale

Abstract

Solvent-free microwave extraction (SFME) has been proposed as a green method for the extraction of essential oil from aromatic herbs that are extensively used in the food industry. This technique is a combination of microwave heating and dry distillation performed at atmospheric pressure without any added solvent or water. The isolation and concentration of volatile compounds is performed in a single stage. In this work, SFME and a conventional technique, hydro-distillation HD (Clevenger apparatus), are used for the extraction of essential oil from rosemary (Rosmarinus officinalis L.) and are compared. This preliminary laboratory study shows that essential oils extracted by SFME in 30 min were quantitatively (yield and kinetics profile) and qualitatively (aromatic profile) similar to those obtained using conventional hydro-distillation in 2 h. Experiments performed in a 75 L pilot microwave reactor prove the feasibility of SFME up scaling and potential industrial applications.
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Dates and versions

hal-02637346 , version 1 (27-05-2020)

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Aurore Filly, Xavier Fernandez, Matteo Minuti, Francesco Visinoni, Giancarlo Cravotto, et al.. Solvent-free microwave extraction of essential oil from aromatic herbs: From laboratory to pilot and industrial scale. Food Chemistry, 2014, 150, pp.193-198. ⟨10.1016/j.foodchem.2013.10.139⟩. ⟨hal-02637346⟩
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