Most of essential oil from citrus fruits are using the expression way to get such as orange oil,lemon oil etc.The reason is that the oil from citrus fruits can not resist the high temperature of steam distillation,some ingredients will be destroyed if you use the steam distillation way.While lime oil is an exception,the quality and smell of the oil which is get by distillation way are better than that getting with expression way.

Expression way is mainly conducted manually through a natural sponge.People use sponge to adsorb the oil from peels after squeezing.Then the oil will be collected from sponge and sponge can be also sold as it has good smell.For now,the machine has replace the labor. to reduce the cost,such as the cold press machine.