date:Feb 11, 2019
ciferin and the third napin, which are the rapeseeds two main storage proteins. All three isolates had a protein content of 80 to 90%.
As the investigations show for the first time, a compound called kaempferol 3-O-(2-O-sinapoyl--sophoroside) is the key substance that makes protein extracts from rapeseed inedible.
The cruciferin isolate in particular contained a large amount of this bitter substance with 390 milligrams per kilogramme. The rapeseed meal and napin isolate had less than a tenth o