1. Academy of Scientific and Innovative Research (AcSIR) Kamla Nehru Nagar, Ghaziabad Uttar Pradesh 201 002 India
2. Analytical Sciences Division CSIR‐Indian Institute of Petroleum Mohkampur, Dehradun Uttarakhand 248 005 India
3. Biofuel Division, CSIR‐Indian Institute of Petroleum Mohkampur, Dehradun Uttarakhand 248 005 India