The rapeseed oil making production generally adopts pressing → refining or pre-press→solvent extraction→ refining. To make rapeseed oil into edible rapeseed oil that meets the national standard, it is necessary to remove a small amount of impurities and unsuitable components such as free fatty acids. , Aldehydes, ketones, hydrocarbons, alcohols, sulfur compounds, etc.
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Rapeseed oil production process have one-time press method and pre-pressed--solvent extraction method.