Optimization of Hydrodistillation of Rosemary Essential Oil: Comparison With Supercritical CO2 Extraction

Ouassila Larkeche, Ahmed Zermane, Abdeslam-Hassen Meniai, Souad Boubaira, Hayat Kouis and Hafida Boubadjaa
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Ouassila Larkeche: University Constantine 3, Algeria
Ahmed Zermane: Universiy Larbi Ben Mhidi Oum El Bouaghi, Algeria
Abdeslam-Hassen Meniai: Laboratoire ingénierie des procédés de l'environement, University Constantine 3, Algeria
Souad Boubaira: University Constantine 3, Algeria
Hayat Kouis: University Constantine 3, Algeria
Hafida Boubadjaa: University Constantine 3, Algeria

International Journal of Energy Optimization and Engineering (IJEOE), 2020, vol. 9, issue 3, 51-61

Abstract: Extraction of essential oil from Algerian rosemary leaves is carried out by means of a hydro-distillation process. The important operating parameters such as extraction time, condensation flow rate and water/solid plant material ratio, have been investigated. The highest yield value was 1.92% and was obtained for a water/plant ratio, a condensate flowrate, and extraction time of 20, 4.51ml/min and 120 min, respectively. The essential oil components have been identified using the GCMS analysis which show camphor as the major ingredient, followed by camphene, α-pinene and 1,8-cineole. The results have been compared with those obtained using a supercritical carbon dioxide extraction process, which has shown to be more much better quantitatively and qualitatively.

Date: 2020
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