**2.7 Extraction by fatty substances**

This enfleurage technique is used in the extraction of EO from flowers, fragile parts of plants. It takes the advantage of the fat-soluble odorous components of plants in fatty substances. The principle consists of bringing the flowers into contact with a fatty substance to saturate it with plant essence (**Figure 6**). The obtained product is a floral ointment that is then exhausted by a solvent, which is eliminated under reduced pressure [23].
