Understanding Pressure Extraction of Vegetable Oils

摘要

The report lists the seeds most commonly used commercially to obtain oil by means of mechanical pressing. Oil can be extracted from nuts and seeds by heat, solvents, or pressure. The paper deals with extraction by pressure. Pressure extraction separates the oil from the solid particles by simply squeezing the oil out of the crushed mass of seeds. A long lever described in the study can exert up to 100 pounds per square inch. Since greater pressure provides greater oil recovery, the lever has often been replaced by heavy and strong mechanical jacks of several designs (screw jacks, ratchet jacks, and hydraulic jacks).