Scale-Up of Alfalfa () Protein Recovery Using Screw Presses.

As a consequence of the increased demand for proteins for both feed and food, alternative protein sources from green plants such as alfalfa () have come into focus, together with methods to recover these proteins. In this study, we have investigated the use of screw presses for protein recovery from alfalfa at laboratory and pilot scale. We found that using a pilot scale screw press, with a working pressure of 6 bar, 16% of the total protein was recovered in one pressing, and that after rehydrating and repressing the alfalfa up to ten times, 48% of the total protein could be recovered.