line 44 and pumped through ultrafiltration membranes 46 to produce a concentrated protein solution as the retentate in line 48 with the permeate being removed by line 50 the concentrated protein solution is passed through a spray dryer 52 to provide further dry flax protein isolate 54 as an alternative the concentrated protein solution in line 48 may be passed by line 56 to mix with the protein micellar mass before the mixture then is dried in spray dryer 40 this example illustrates the recovery of linola protein from linola oil seed linola oil seed was cold pressed and the oil recovered 16 8 kg of crushed meal was added to 335 l of 0 15 m nacl solution 5 w v extraction concentration at 13 u00b0 c and the mixture agitated for 60 mins followed by a 60 min settling period 190 l of extract was decanted and filtered through 20 u03bcm filter pads to provide 180 l of an aqueous protein solution having a protein content of 6 g l the aqueous solution was reduced in volume to 11 l by concentration on an ultrafiltration system using 30 000 daltons molecular weight cut off the resulting concentrated solution had a protein content of 6 g l which represented a yield.