Essential Oils

Essential oil species

Citrus aurantium var. dulcĂ­s

Citrus aurantium var. amara

Major components

Limonene 89% Myrcene 1.7% Beta-bisabolene 1.29%

d-limonene 89-96%

Minor components

Linalool Neral

Geranial, neral, citronellal, sabinene, myracene Nerol, geraniol, linalyl acetate Bergaptene 0.069-0.073% Furanocoumarins (not in steam distilled oils)

Price & Price 1995, Sellar 1992

Terpeneless/deterpenated or concentrated orange oil is sometimes available. Although the terpenes are removed, terpeneless orange oils retain all their other chemical components, including the furanocoumarins, which are in larger amounts, and this increases their phototoxic potential. Therefore, the safe concentration in blends containing terpeneless oils is less than 0.2% (Tisserand & Balacs 1995).

Methyl anthranilate is an important compound that may give orange flowers their aroma (Jeannot et al 2005).

The composition of orange essential oils is described by the International Standards Organisation (ISO) under the following standard numbers 1340: 2005

bitter orange C. aurantiumvar. amara C. aurantium (petitgrain) C. aurantiumvar. amara (neroli) Oils of citrus.

9844: 1991 8901:2003 3517: 2002 4735: 2002

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