resultant milky solution was heated to about 90 u00b0 c after about 2 hours the mixture was cooled to room temperature and aged overnight the dark brown precipitate formed was filtered washed repeatedly with deionized water and dried under vacuum at about 70 u00b0 c temperature 0 2 gr nanoparticles sorbents were dispersed into an ethanolic lecithin solution by 10 mg ml concentration for about 1 min with a probe sonicator ultrasonic liquid processor and immediately mixed with moderate agitation for about 20 min at about 38 u00b0 c and at ph 6 5 and then magnetic nanoparticles were separated by applying an external magnet finally the supernatant was dried under argon gas for phosphatides analysis which indicated that a purity of phoshatidylcholine at 87 was reached it should be understood that the technique of the instant invention can be employed multiple times for better separation and extraction of the phosphatidylcholine accordingly high purities of about 85 100 are possible where ranges of purity of 85 90 85 95 90 95 90 100 are possible dependent on the conditions employed and the number of iterations while the present invention has been illustrated by the description of the embodiments thereof and while the embodiments have been described in detail it is not the intention of the applicant to restrict or in any way limit the scope of the appended claims to such detail additional advantages and modifications will readily appear to those skilled in the art therefore the invention in its broader aspects is not limited to the specific details representative apparatus and method.