expression

A procedure called expression is applied only to citrus oils. The outer coloured peel is squeezed in presses, and the oil is decanted or centrifuged to separate water and cell debris. The method is used for oil of sweet and bitter orange, lemon, lime, mandarin, tangerine, bergamot, and…

The expression method, used to recover citrus oils from fruit peels, ranges from a traditional procedure of pressing with sponges to mechanical maceration. Individual compounds used in perfumery may be isolated from the essential oils, usually by distillation, and may sometimes be reprocessed to obtain still…