THE PROCESS OF EXTRACTING STEROL FROM DEODOURISED DISTILLATES WHICH IS A BY PRODUCT RECOVERED DURING REFINING OF SOYBEAN OIL FROM SOYBEAN SEEDS

摘要

An industrial process of extracting sterol from deodorized distillate, which is a byproduct recovered during refining of Soybean oil from Soybean seeds. Compressing the steps of : i. Heating the viscose deodorized distillate unto liquid state by a heating coil kept inside a tank ; ii. Pumping the liquefied distillate of step (I) to molecular distillation Plant and degassing the liquefied distillate in the plant ; iii. Boiling the liquid distillate of step (ii) in the molecular distillation plant about 120oC and cooling it subsequently that removes 15 to 20% of fatty acid ; iv. Repeating the process of step (iii) thrice to recover major portion of fatty acids ; v. Superheating the residual liquid distillate after the 4th stage to about 240 -250oC and collecting the residues in form of vaporous containing sterol & fatty acids ; vi. Dissolving the content of step (v)in a crystallizer unit by a suitable solvent which is flour times the mass of the residue and cooling the system by chilled water at 10oC to precipitate the crystals & filtered to separate undesirable materials ; vii. Loading the filtrate of step (vi) to a reflex vessel and refluxing further with methanol / acetone for separation of residual fatty acids from the filtrate ; viii. Vacuum trying the filtrate of step (vii) at 50oC to remove the solvent 85 obtaining the pure sterol.