In recent years, the probiotic bacteria, as the food additives, have been introduced into numerous foods, of which the dairy products especially yoghurt has played an important role in carrying these bacteria (such as B. bifidum and L. acidophilus). The purpose of this study, determine the effects of different ziziphora Clinopodioides (50, 100 and 150 micrograms), in two passages after and befo...