1. Department of Pharmaceutical Sciences, Dr. Hari Singh Gour University, Sagar (M.P.) 470003, India, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector 67, SAS Nagar (Mohali), Punjab 160062, India, and Department of Microbiology, Sanjay Gandhi P.G. Institute of Medial Sciences, Lucknow (U.P.), India