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Integrated supercritical fluid extraction of essential oils
Kheibar Dashtian1, Mahdie Kamalabadi2, Arash Ghoorchian3
1Department of Chemistry, Iran University of Science and Technology, Tehran, Iran.
Journal of Chromatography. A
|August 18, 2024
Summary
Supercritical fluid extraction (SFE) offers an efficient way to obtain plant essential oils (EOs). This review explores combining SFE with other methods to improve EO production and commercial viability.
Area of Science:
- Green Chemistry
- Analytical Chemistry
- Process Engineering
Background:
- Supercritical fluid extraction (SFE) is a highly efficient, eco-friendly, and rapid technique for isolating essential oils (EOs) from botanical sources.
- Essential oils, rich in aromatic compounds, are vital components in industries like food, fragrance, cosmetics, pharmaceuticals, and healthcare.
- While SFE for EOs is established, integrating it with complementary extraction technologies presents opportunities for process optimization.
Purpose of the Study:
- To provide a comprehensive review of advanced techniques for enhancing supercritical fluid extraction (SFE) of essential oils (EOs).
- To categorize and analyze methods that combine SFE with other extraction processes.
- To address challenges and explore opportunities for commercializing enhanced SFE methods for EO production.
Main Methods:
- Literature review of combined SFE techniques for essential oil extraction.
- Categorization of integrated methods including pressurized liquid, ultrasound, steam distillation, microfluidics, enzyme, adsorbent, supercritical antisolvent, molecular distillation, microwave, milling, and mechanical pressing.
- Analysis of challenges and opportunities associated with each combined approach.
Main Results:
- A sophisticated framework is presented for integrating SFE with various extraction methodologies.
- Detailed discussion on the synergistic effects, challenges, and potential benefits of combined SFE techniques.
- Identification of pathways to overcome current limitations in commercial SFE for EOs.
Conclusions:
- Combining SFE with other extraction methods offers significant potential for improving essential oil yield, quality, and production efficiency.
- Addressing the identified challenges can lead to streamlined commercial production of premium essential oils.
- This integrated approach paves the way for novel applications and advancements in the essential oil industry.
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