Give one method of immobilising an enzyme. What are the benefits of using immobilised enzymes?

Methods:encapsulate in sodium alginate beadstrap in the pores of silica geladsorption onto glass or clay or resinwithin a polymer or microspheresby covalent bonding to a support material such as collagen
Benefits:ability to be reusedenzyme easily recoveredenzyme won't contaminate the productmeans that product does not have to be purified as muchenzyme has longer shelf lifeenzyme is more stable to changing temperatures and pH