| abstract |
The present invention discloses a kind of preparation method of rapeseed oil, includes the following steps：It after rapeseed is stir-fried, puts into twin-screw oil mill and extracts oil, crude rapeseed oil and dregs of rapeseed cake is made, collect crude rapeseed oil and dregs of rapeseed cake respectively；Extract the polyphenol from rapeseed in dregs of rapeseed cake；Polyphenol from rapeseed is mixed with curcumin, composite antioxidant is made；Rapeseed oil finished product is made in crude rapeseed oil refining, composite antioxidant is added, anti-oxidant rapeseed oil is made.The present invention makes full use of the dregs of rapeseed cake generated during rapeseed oil, extracts polyphenol from rapeseed therein, and composite antioxidant then is made with curcumin compounding, is added in rapeseed oil, improves the antioxygenic property of rapeseed oil. |