“…In addition, cell immobilization also includes other advantages such as easy recycling, good stability, durability, and high functional efficiency, as well as the tolerance to the disadvantageous environmental conditions such as temperature, pH, toxic substances, etc. At present, cell immobilization possesses extensive application and developmental potential in the scopes of food, biology, environmental protection, and medicine (Coughlan and Kierstan, 1988;Kourkoutas et al, 2004;Leon et al, 1998). Gel entrapment of lactic acid bacteria in health-care drinks can effectively enhance its tolerance to gastric juice, bile salts, etc., and increase its survival and activity in human intestinal tracts (Doleyres et al, 2004;Kailasapathy and Masondole, 2005;Ibrahim et al, 2004;Lee and Heo, 2000;Sun and Griffiths, 2000).…”