Defi nition: Essential oil obtained without heating, by suitable mechanical treatment of the fresh peel of the fruit of Citrus sinensis (L.) Osbeck (Citrus aurantium L. var. dulcis L.).
Defi nition: Neroli oil is obtained by steam distillation of the fresh fl owers of Citrus aurantium L. subsp. aurantium L. (Citrus aurantium L. subsp. amara Engl.).
Defi nition: Essential oil obtained by steam distillation of the fresh, fl owering aerial parts, recently gathered from Mentha canadensis L. [syn. Mentha arvensis L. var. glabrata (Benth) Fern., Mentha arvensis var. piperascens Malinv. ex Holmes], followed by partial separation of menthol by crystallization.
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: Essential oil obtained without heating, by suitable mechanical treatment of the fresh peel of the fruit of Citrus reticulata Blanco var. mandarin.
Defi nition: Eucalyptus oil is obtained by steam distillation and rectifi cation of the fresh leaves or the fresh terminal branchlets of various species of Eucalyptus rich in 1,8-cineole. The species mainly used are Eucalyptus globulus Labill., Eucalyptus polybractea R.T. Baker, and Eucalyptus smithii R.T. Baker.
Defi nition: Clove oil is obtained by steam distillation of the dried fl ower buds of Syzygium aro- maticum (L.) Merill et L. M. Perry (Eugenia caryophyllus C. Spreng. Bull. et Harr.).
Defi nition: Ceylon cinnamon bark oil is obtained by steam distillation of the bark of the shoots of Cinnamomum zeylanicum Nees (Cinnamomum verum J.S. Presl.).
Defi nition: Essential oil obtained by steam distillation of the ripe fruits of Foeniculum vulgare Miller, ssp. vulgare var. vulgare. Content: fenchone: 12–25%, trans-anethole: 55–75%.
