Hany El-Kashef is an assistant lecturer. He earned M.Sc. in 2011. Dr. Alaa Abd El-Fattah is a professor since 2006. He specialized in dairy microbiology and nutrition. Dr. Fawzia Abd Rabo works as professor and specialized in dairy chemistry and nutrition. All authors work at Dairy Sci. Dept., Fac. Agric., Cairo Univ.