are used for a variety of medicinal conditions including chronic hepatitis, kidney disease, and coronary heart disease (Ooi, 2001), with an effect in enhancing the immune system (Halpern and Miller, 2002). Penicillin, perhaps the most famous of all antibiotic drugs, is derived from the common fungus, Penicillium chysogenum. Many other fungi also produce antibiotic substances, which are now widely used to control diseases in human and animal populations. The discovery of antibiotics revolutionized health care worldwide (Wildman, 1997).