Method of increasing the yield of rapeseed oil in its production from rapeseed

摘要

When pressing rapeseed oil from rapeseed, a large part of the oil remains trapped in the oilcake. The method of increasing the oil yield consists in heating the oil pressings to a temperature at which rapeseed oil is released in the form of vapors into the vapor phase. After the vapors have cooled to normal temperature, the vapors will condense back. The heating temperature of the pomace must be chosen with regard to the temperature stability of rapeseed oil in order to avoid its thermal degradation. The process makes it possible to obtain up to 32% of rapeseed oil (based on the weight of the pomace before heating).