Process for the production of pure lecithin directly usable...

Details Process for the production of pure lecithin directly usable... Process for the production of pure lecithin directly usable...

C - Chemistry, Metallurgy

07

F

260/496.25

C07F 9/10 (2006.01) B01D 11/04 (2006.01)

Patent

CA 1153776

ABSTRACT OF THE DISCLOSURE Disclosed is a process for the production from raw lecithin of pure lecithin directly usable for physiological purposes, comprising the steps of contacting raw lecithin with gas as the extraction medium under supercritical con- ditions with respect to pressure and temperature in an extraction stage to produce a gas containing an extract; passing the gas containing the extract from the extraction stage into a separation stage; varying at least one of the pressure and the temperature of the gas in the separation stage to separate the extract-containing gas into the gas and the extract; recycling the gas after the step of vary- ing the pressure and/or temperature; and removing pure lecithin from the extraction stage.

373766

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