Olive Oil Production
The reason for this is that olive oil is obtained by passing the olives through a cold press and may be eaten without any chemical processes. For this reason alone, there is no difference between the olive oil extraction method employed in the present day and the one used some six thousand years ago:
Olive are crushed into pulp and then this pulp is squeezed or passed through a press. Next, the neon green olive oil is separated from the waste water of the olive fruit. Hydraulic presses started to be used once technology developed in the early 19th century. Presently, besides hydraulic presses, machines, aimed at obtaining olive oil by centrifugal force without applying any pressure on the olive pulp, have been employed. The most widespread one among them is the “continuous system”.
The Continuous system is also called a fully automated system. First, olives are sorted out by varieties. Olives dropped into the pit called “funnel” are stripped of their leaves by a machine and crushed and broken in a crusher (the machine finely crumbles the stone at 3.000 cycles) The pulp coming out of the machine is added with water upon stirring and kneading. the Pomace and juice are separated. Olive oil and waste water are separated from the juice and the olive oil is taken into the filtering tank. These olive oils are called virgin olive oil or extra virgin olive oil depending on the acidity and can be consumed directly like a fruit juice. the Last sediments are removed and the olive oil is left in the settling tank. From here, virgin and extra virgin olive oil is filled in kettles, cans and bottles. Pomace left of the olive oil is re-ground and used in making soap. the valuable Pomace sediment is called a pellet and used for fuel.
In order to obtain olive oil of good quality: Olives should be processed as soon as possible after the harvest. The olive oil quality will be degraded if olives are processed late. Olives must be well cleaned before entering the process in the mill and olive oil must be stored in proper condition.