1. Department of Applied Microbiology and Brewing, Faculty of Biosciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
2. Department of Microbiology, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, Nigeria
3. Department of Food Science, Ebonyi State University EBSU, Abakaliki, Ebonyi State, Nigeria
4. Department of Microbiology, Faculty of Biological Sciences, University of Calabar, Calabar, Nigeria