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What is synchronous pressing and refining of rapeseed oil?
A new method for rapeseed oil preparation named synchronous pressing and refining after solid-phase preadsorption technology was investigated. Rapeseed and adsorbents were first mixed evenly to form premixes, and the product oils were then obtained by direct pressing and filtering.
What is a good refining method for rapeseed oil?
Silicon dioxide had the best refining effect, with dephosphorization and deacidification rates of 95% and 42%, respectively, when the dosage was 30 g/kg at a squeezing chamber temperature of 130 °C. At the same time, the L* value of rapeseed oil increased by 21%, and the a* value decreased by 59%.
What is rapeseed oil preparation technology?
The present rapeseed oil preparation technology universally used is prepressing and leaching technology. It is a long-term process with high energy consumption and a large discharge of three wastes (wastewater, waste organic solvent and residue).
How is rapeseed oil pressed?
Rapeseed crude oil was pressed at 101.3 KPa from the same heat-pretreated rapeseeds by the oil press machine (Xiangju Intelligent Co., Ltd., Dongguan, China) when the squeezing chamber temperature was 130 °C with a loading mass of 200 g each time. Each pressing process took approximately 2 min.