ESSENTIAL OILS AND OLEORESINS

The choice of extraction solvent and extraction method determines the difference between an essential oil and an oleoresin. These are complex, highly concentrated mixtures of substances used for both internal and external applications. Essential oils are typically produced by steam distillation (in most cases) or cold pressing (from the peel of citrus fruits). They are administered in the form of drops, capsules, ointments, and gels for phytotherapy as well as for food flavoring.