Essences can be collected from fresh juice in a number of ways including partial distillation prior to juice evaporation or by condensation of volatiles from the early stages of evaporation. De-oiling juice is important as the acid pH causes chemical degradation of the terpenes, which leads to off-flavours. Two phases, namely aqueous and oil, are obtained during recovery. Essence oil phase is generally used in the beverage and fragrance industry. The composition of essence oils is similar to that of peel oils but the essence oils usually contain a larger amount of aliphatic ethyl esters. Thus, their aroma resembles that of a particular juice more than that of peel oils.