Composition
The composition of orange oil varies for several reasons. Region and seasonal changes as well as the method used for extraction lead to these variations. Several hundred compounds have been identified with gas chromatograph-mass spectrometry. Most of the substances are part of the terpene group with limonene being the dominant one. Long chain aliphatic hydrocarbon alcohols and aldehydes like octanol and octanal are second important group of substances.
| Compound | Italian Orange Oil Concentration | Valencia orange oil Concentration | Valencia orange oil Concentration | Valencia orange oil Concentration |
|---|---|---|---|---|
| Limonene | 93.67 | 91.4 | 95.17 | 97.0 |
| α-Pinene | 0.65 | 1.4 | 0.42 | – |
| Sabinene and β-Pinene | 1.00 | 0.4 | 0.24 | – |
| Myrcene | 2.09 | 4.3 | 1.86 | 0.03 |
| Octanal | 0.41 | – | - | – |
| Linalool | 0.31 | 0.8 | 0.25 | 0.3 |
| δ-3-Carene | 0.31 | – | – | – |
| Decanal | 0.27 | 0.4 | 0.28 | – |
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