While the analysis step is complete after 15 to 30 minutes, extraction takes at least several hours. The extraction step of essential oils represents 70 percent of the total processing time. Microwave extraction makes use of physical and chemical phenomena that are fundamentally different compared to those applied in conventional isolation techniques. These novel processes can produce essential oil in concentrate form, free from any residual solvents, contaminants, or artifacts. The NEOS system leaded to the grant of the European patents 1439218, 1618798 and 1629725.




This green extraction is an original “upside down” microwave alembic combining microwave heating and earth gravity at atmospheric pressure. It is important to note that this green method allows extracting essential oils without distillation and evaporation, which are the most energy consuming between the unit operations. The distillation step, which can represent up to 80% of the total analytical procedure, is no longer required. Whereas traditional processes are carried out within 3 hours, solvent-free microwaves hydrodiffusion plus gravity requires no more than 30 minutes.


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