Université d'Avignon et des pays du Vaucluse, INRA, UMR408, GREEN Extraction Team, F-84000 Avignon, France.
Université de Nice Sophia Antipolis, UMR 7272 CNRS, Institut de Chimie de Nice, Parc Valrose, 06108 Nice, France.
Food Chem. 2014 May 1;150:193-8. doi: 10.1016/j.foodchem.2013.10.139. Epub 2013 Nov 5.
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 30min were quantitatively (yield and kinetics profile) and qualitatively (aromatic profile) similar to those obtained using conventional hydro-distillation in 2h. Experiments performed in a 75L pilot microwave reactor prove the feasibility of SFME up scaling and potential industrial applications.
无溶剂微波萃取（SFME）已被提议作为从广泛用于食品工业的芳香草本植物中提取精油的绿色方法。该技术是微波加热和常压下干馏的结合，无需添加任何溶剂或水。挥发性化合物的分离和浓缩在一个阶段内完成。在这项工作中，SFME 和传统技术——水蒸馏 HD（克利夫兰装置），用于从迷迭香（Rosmarinus officinalis L.）中提取精油，并进行了比较。这项初步的实验室研究表明，SFME 在 30 分钟内提取的精油在定量（产率和动力学曲线）和定性（芳香轮廓）方面与传统水蒸馏在 2 小时内获得的精油相似。在 75L 中试微波反应器中进行的实验证明了 SFME 放大的可行性和潜在的工业应用。
