The use of immobilized cells in the production of micro-bial enzyme is one of the interesting techniques applied for the improvement of fermentation processes. Even though there are many methods of immobilization and matrix carriers, adsorption and entrapment in suitable carriers are more preferred [25]. Theconfinement of the cells to support materials implies a number of desirable properties which play significant role in protecting the cell from detrimental environment perturbation including cellabrasion and collision which due to shear forces [19,25]. More-over, the support materials provided stabilizing effect on the cellular activities that enhanced operational stability [26] andimmo bilized cell preparations can be stored for a longer periodof time, besides using them for several times without reduc-ing their cells activities [27]. Cell immobilization also lowers the apparent broth viscosity and makes the
rheological features more favorable for oxygen supply and mass transfer [28]. Furthermore,cells are protected from shear damage by immobilization, result-ing in higher cell loading, and higher volumetric productivities[19].