Violet Leaf Absolute (aromatherapy)
Violet Leaf Absolute is produced by petroleum ether extraction of the freshly harvested leaves. The resulting extract is the concrète of violet leaves. By alcohol washing, chilling and filtration of the alcoholic extract and subsequent evaporation in vacuum, an absolute is obtained. This is a viscous liquid, intensely dark green and possessing a very powerful and peculiar odor, truly a green- leaf odor, but with an indisputable floral and delicate note which makes it immediately reminiscent of violets in a bouquet (flowers, stems, leaves).
Arctander, Steffen . Perfume and Flavor Materials of Natural Origin (p. 757).