Besides 6-APA, the production of 7- aminodeacetoxycephalosporanic acid (7-ADCA), 7- aminocephalosporanic acid (7-ACA), and deacetyl-7-
aminocephalosporanic acid (D-7-ACA) has great importance since they can be utilized to synthesize almost all semisynthet- ic antibiotics of penicillins or cephalosporins. It should also be noted that synthesis of these antibiotics has been performed via biocatalysts instead of chemical methods because of health and environmental issues (Sio and Quax 2004).