The rapeseed oil content is 37.5% to 46.3%. For different types of rapeseed, its oil content is slightly different. Our canola oil extraction machine has two types: canola screw press and canola oil cold press machine, which can achieve both hot pressing and cold pressing.
How is rapeseed oil extracted?
There are several purely mechanical extraction methods: cold pressing, pressing after cooking and double pressing (cold pressing followed by heat conditioning and a second pressing). Their performance in terms of residual oil content in the meal ranges from 9.9 to 16.3%, 9.7 to 15.7% and 8.7 to 13.5% residual oil (rapeseed), respectively [ 36 ].
What is a good book on filtration extraction of rapeseed?
Extraction of fats and oils, in Bailey’s Industrial Oil and Fat Products, vol. 2, 4th ed., ed. D. Swem. New York: Wiley. 207-214. Pulis, G. 1. 1985. The Schumacher D. T. Oil Mill Gazetteer 90(6):30-34. Reynolds, J. R. and Youngs, C. G. 1964. Effect of seed preparation on efficiency and oil quality in filtration extraction of rapeseed. 1.
Can mechanical pressing be used for rapeseed oil extraction?
The investigation of mechanical pressing for rapeseed oil extraction has been limited. In one study, a screw-pressing method achieved an extraction degree of 72% [ 16 ]. Another study using a ‘duo’ screw press demonstrated a higher extraction degree of 82.6% [ 17 ].