Orange oil is an essential oil produced by cells within the rind of an orange fruit (Citrus saneness fruit). In contrast to most essential oils, it is extracted as a by-product of orange juice production by centrifugation, producing cold-pressed oil. It is composed of mostly (greater than 90%) d-limonene and is often used in place of pure d-limonene. D-limonene can be extracted from the oil by distillation. Limonene gives citrus fruit their familiar aroma and is therefore used in perfume and household cl...