The peanut oil extraction process (peanut oil project) typically involves the following main steps:
Cleaning: Raw peanuts are thoroughly cleaned to remove dirt, stones, and other impurities.
Shelling: The cleaned peanuts are shelled to remove the outer hulls.
Roasting: The shelled peanuts are then roasted to enhance flavor, aroma, and oil extraction efficiency. Roasting also helps in loosening the oil-bearing cells.
Cooling: Roasted peanuts are cooled down to room temperature before further processing.
Crushing: The cooled peanuts are crushed into small pieces or ground into a paste.
Pressing: The crushed or ground peanuts are then subjected to mechanical pressing to extract peanut oil. This can be done using hydraulic presses or screw presses.
Oil Filtration: The crude peanut oil obtained from pressing undergoes filtration to remove solids and impurities.
Refining: The filtered oil may undergo refining processes such as degumming, neutralization, bleaching, and deodorization to improve its color, flavor, and shelf life. These processes help in removing impurities, free fatty acids, and undesirable flavors.
Packaging and Storage: The refined peanut oil is packaged into containers suitable for storage and distribution.
These steps provide a general outline of the typical process used to extract and refine peanut oil from peanuts. Variations in the process may occur based on factors such as regional practices, scale of production, and desired end product specifications.
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