Defi nition: Blue essential oil obtained by steam distillation of the fresh or dried fl ower heads or fl owering tops of Matricaria recutita L. (Chamomilla recutita L. Rauschert). There are two types of matricaria oils, which are characterized as rich in bisabolol oxides or rich in (-)-a-bisabolol.
Defi nition: Cassia oil is obtained by steam distillation of the leaves and young branches of Cinnamomum cassia Blume (Cinnamomum aromaticum Nees).