Our work is approximately the extraction of sunflower seed oil in a twin-screw extruder with or without plastic extrusion die the injection of 2-ethylhexanol and acidified 2-ethylhexanol. 2-Ethylhexanol is mixed with phosphoric acid. The essential oil recovery is risen to 90% by the co-injection of acidified liquor. Combining phosphoric acid with the liquor enhances the lability of the oily spherosomes. Its addition increases the destruction of the membranes enveloping the lipid-including organelles to release the oil more easily. Phosphoric acid exhibits an extracting and a degumming purpose. The best oil top quality was obtained at a low extraction temp (80C), when 88% of the oil was removed. After alcoholic distillation, the essential oil exhibited a total acid value (mineral acidity plus organic and natural acidity) of 4 mg KOH/g of essential oil and a natural phosphorus content below 30 ppm.