Process intensification of fluidized bed dye-ligand adsorption of G3PDH from unclarified disrupted yeast: a case study of the performance of a high-density steel-agarose pellicular adsorbent

The development of a process intensified primary capture step for the direct selective recovery of intracellular proteins from very dense particulate-containing yeast extract has been explored. The purification of glyceraldehyde 3-phosphate dehydrogenase from bakers' yeast was chosen as a potential demonstration of this approach. A high throughput (50%, w/v, yeast extracts at a superficial linear velocity of 450 cm h(-1)) was achieved by adoption of a high-density adsorbent (UpFront steel-agarose; rho = 2.65 g ml(-1)) derivatized with selective ligand chemistries (Cibacron Blue 3GA). This should ultimately minimize adsorption time and maximize process efficiency of fluidized bed adsorption.