Pharmacognosy Department, College of Pharmacy, Egyptian Russian University, Badr City, Egypt. Microbiology Department, College of Pharmacy, Port Said University, Port Said, Egypt. Biology Department, School of Sciences & Engineering, The American University in Cairo, New Cairo, Egypt. Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou, PR China. Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, Oklahoma, USA. Pharmacognosy Department, College of Pharmacy, Cairo University, Cairo, Egypt.