1. Department of Chemistry, Indian Institute of Technology, Guwahati, Guwahati, Assam 781039, India
2. Biosciences and Bioengineering, Indian Institute of Technology, Guwahati, Guwahati, Assam 781039, India
3. Plant Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants Lucknow, Uttar Pradesh 226015, India