Groundnut oil processing process, based on mechanical pressing technology, is generally grouped into three stages: groundnut seeds preparation, groundnut pressing and rude groundnut oil refining. First of all, the groundnut seeds need a thorough cleaning process to remove sand, stalk, plant debris and any other impurities.
What is groundnut oil extraction?
Lawan et al. (2015) , reported that groundnut oil extraction involves shelling the groundnut pods, roasting the shelled groundnut seeds, deskinning and winnowing the roasted groundnut seeds, milling the cleaned groundnut seeds and kneading the paste produced. … PDF | Groundnut oil extraction involves removing oil content of the groundnut seed.
What is groundnut oil expelling machine?
Groundnut oil expelling machine is an important device for oil recovery from groundnut seed in a roller mill, direct firing of barrel and pressing with an engine driven oil expeller. Expeller use a horizontal rotating metal screw, which feeds oil-bearing seeds into a barrel shaped outer casing with perforated walls according to Maul et al (2011).
How groundnut oil is produced?
Second, the well prepared seeds are conveyed to the screw pressing machine, which is the most popular method of groundnut oil production. The machine’s screw warm pressed the groundnut seeds as it moves to advance where the space is smaller and smaller. Due to strong frication and high pressure, groundnut oil is pressed out.