WSTA 15th Gulf Water Conference

WSTA 15th Gulf Water Conference
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Optimization of thyme essential oil extraction by microwave: An investigation by Box–Wilson central composite design(CCD)

Sabrina Koribeche, Sadjia Bertouche, Naima Sahraoui, Nassila Sabba

https://doi.org/10.5004/ic202422

Optimization of thyme essential oil extraction by microwave: An investigation by Box–Wilson central composite design (CCD)

Sabrina Koribeche, Sadjia Bertouche, Naima Sahraoui, Nassila Sabba

Laboratory of Matter’s valorization and recycling for sustainable development . University of Sciences and Technology Houari Boumediene, Algeria

https://doi.org/10.5004/ic202422

ABSTRACT

In this study, response surface methodology based on the Box-Wilson central composite design (CCD) was employed to optimize the extraction of thyme essential oil using microwave-assisted steam distillation (MAHD). Two principal factors, steam flow rate (Q) and microwave heating power (P), were systematically investigated to evaluate their effects on essential oil yield and extraction kinetics. Statistical analysis via ANOVA confirmed the significance of the model, revealing complex interactions between parameters. An optimal condition was established, achieving a high essential oil yield with enhanced extraction speed. The strong determination coefficient (R2 = 0.97) validated the model's robustness, suggesting promising applications for industrial scaling.

Keywords: Thyme essential oil; Microwave extraction; Response surface methodology; Central composite design; ANOVA

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