R. S. Singh is a professor in the Department of Biotechnology at Punjabi University, Patiala, India. Ashok Pandey is a professor and thehead of the Centre for Biofuelsand Biotechnology Division at the CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum, India. Edgard Gnansounou is a professor in the Laboratory of Energy Systems at the Swiss Federal Institute of Technology, Lausanne, Switzerland.