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How to Filter Olive Oil?

Sep. 19, 2022

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Olive oil is a common edible vegetable oil made from olives. In addition to edible, olive oil can also be used to make cosmetics, medicines and oil lamp fuels. The production process of olive oil is picking and cleaning, pressing and grinding, extraction, filtration, separation and bottling.


1. Picking and Cleaning

Since olives are fragile plants, take care not to break the olives when they are picked and then transported to the factory where the olive oil is made. After arriving at the factory, removing the sundries from the olives, then send them to a special machine for cleaning. You need to pick out the damaged and bad olives, leaving only good olives to make olive oil.


2. Pressing and Grinding

When pressing olives, you need to first press the olives into mesh. Use a computer-controlled grinding machine to press and grind the olives to the desired thickness, and then put the pressed and ground olives into a large screw mixer and mix. After stirring for about 20 to 30 minutes, you can start to extract the the oil from olive.


3. Extraction

When extracting oil, there are mainly two extraction methods squeezing and centrifugation. The squeezing method is a machine that squeezes juice and presses several hundred pounds per square centimeter on a solid steel plate to extrude oil. The centrifugal method is to use a high-speed grinder to crush the olive fruit, then stir it with a mixer, and then put the olive paste into the separator to separate the oil and water mixture.


4. Filtration

Since pressed olive oil contains impurities such as plant tissue and other particles, these impurities can reduce the nutritional quality, taste and shelf life of olive oil, so it needs to be filtered. The equipment of the filtration system usually uses Stainless Steel Bag Filter Housing, and the filtration consumables generally use PP Liquid Filter Bag.


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5. Separation

The extracted olive oil will still contain a little moisture, because olives themselves contain moisture. Therefore, if you want to make high-quality pure olive oil, you also need to pour the olive oil into a high-speed centrifuge, so that the collected olives can be regarded as pure olive oil, and then put them into a large oil barrel.


6. Bottling

After a series of oil-making processes, the olive oil is filled into the cleaned and sterilized bottles by a filling machine, then press the bottle cap, label the product as required, and finally pack it and send it to the warehouse for storage. Because olive oil is exposed to direct sunlight or high temperature will reduce its quality, it needs to be stored in a cool and dark place.


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