Orange Oil (aromatherapy)

Expressed sweet orange oil is a pale orange- yellow to dark orange or olive-orange, occasionally brownish-orange colored mobile liquid which has a sweet, light and fresh, fruityaldehydic odor and flavor, distinctly reminiscent of the odor from a scratched sweet orange peel. Machine expressed oils are generally lighter in color, handpressed oils are usually darker (but not always).
Arctander, Steffen . Perfume and Flavor Materials of Natural Origin

citrus sinensis