“…A variety of enzymes have been immobilized (100). Support materials for enzyme immobilization are quite diverse (73,74) including: (a) polymers (51) such as polystyrene (9,33), nylon (30,37,44,59,81), ethylene-maleic anhydride copolymer (52) , and Teflon (34); (b) inorganic substances (10,56,92) such as alumina (13), glass (72,83,90,93,94,97), stainless steel (12,13,41), and sand (47,83); (c) natural products such as cellulose (49), collagen (22,35,45), and chitin (79,80); and (d) modified materials such as DEAE-cellulose (99,100) and DEAE-Sephadex (99,100). The physical form ofthese supports is also quite diverse; they can exist as powders, particles, granules, sponges, gels, spheres , fibers, and membranes.…”