The traditional oil extraction method is to fry palm kernels in old oil or simply heat the dried nuts. The fried kernels are then pounded or ground to a paste in a motorised grinder. The paste is mixed with a small quantity of water and heated to release the palm kernel oil.

In modern processing, there is a palm kernel oil expeller that is used in a variety of processes to produce palm kernel oil. These include kernel pre-treatment, grinding, flaking, steam conditioning, and screw press. During the pre-treatment process, the kernel is cleaned before it is ground to reduce its size. The palm kernel oil expeller separates the oil from solid impurities during the screw pressing phase.

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Palm oil, Palm Kernel Oil and Palm Kernel Cake
Palm oil is an edible vegetable oil that comes from the fruit of oil palm trees, the scientific name is Elaeis guineensis. Two types of oil can be produced; crude palm oil comes from squeezing the fleshy fruit, and palm kernel oil which comes from crushing the kernel, or the stone in the middle of the fruit. Palm oil comes from the palm fruit, while palm kernel oil is extracted from the palm seed. And while over 80% of the fat in palm kernel oil is saturated, only 50% of palm oil is saturated. This makes palm oil easier on arteries.

Palm kernel cake is a product that is obtained when palm kernel is crushed to expel oil. This is a mechanical process that is important in the production of animal feed. The palm kernel expeller is used as animal feed for sheep, poultry, horses, and cows. The palm kernel is rich in a variety of nutrients that include protein, fibre, iron, zinc, and magnesium. It also contains palmitic acid and residual oil.