Solvent Extraction
Solvent extraction uses solvents like hexane to extract essential oils from delicate plant materials, producing a "concrete" and then a "absolute".
History
Solvent extraction has been used for delicate flowers like jasmine and rose, where other methods may damage the material.
Process
The plant material is mixed with a solvent to dissolve the oils. The mixture is then filtered and the solvent is removed, leaving behind the essential oil.
Required Equipment
- Extractor
- Evaporator
Extraction Details
- Extraction Time: 6-8 hours
- Raw Material: 1000 grams of plant material
- Yield: 2-3% of essential oil (20-30ml per 1000g)
- Temperature Range: Room temperature to 60°C
- Water Ratio: N/A
Tips for Best Results
- Ensure the solvent is completely removed to avoid contamination.
- Use this method for delicate flowers that do not tolerate heat well.