• Chemical analysis and quality control of medicinal and aromatic plants and plant products
• Value addition to the medicinal and aromatic plants from northeast India
• Phytotoxins from plant sources
• Whole-cell biocatalysis for flavour/fragrance production

• National Post-Doctoral (N-PDF) Fellow, National Center for Biological Sciences (NCBS), Bangalore, India (Apr 2017-Aug 2017)
• Post-Doctoral Research Associate, Natural Products Discovery Group, Department of Chemistry and Biochemistry, University of Oklahoma, Norman, USA (Nov 2015-Dec 2016)
• Research Fellow, CSIR-National Chemical Laboratory, Division of Organic Chemistry, Pune, India (July 2008-July 2015)

Google scholar link: https://scholar.google.co.in/citations?user=EYJlPyAAAAAJ&hl=en&oi=ao
Personal webpage: https://sites.google.com/view/abc-phytochemicals

• Bora, P. K.; Borah, G.; Kalita, D.; Saikia, S. P.; Haldar, S*. Mushroom-mediated reductive bioconversion of aldehyde-rich essential oils for aroma alteration: A rose-like floral bioflavor from citronella oil. Journal of Agricultural and Food Chemistry 2023, 71, 1690-1700. (IF 5.89)
• Mahanta, B. P.; Lahon, D.; Kalita, D.; Lal, M.; Haldar, S*. Study on aroma-profile, key odorants and ontogenetic variability of black turmeric (Curcuma caesia Roxb.) essential oil: An aroma perspective. Industrial Crops and Products 2023, 193, 116115. (IF 6.44)
• Bora, P. K.; Borah, G.; Begum, M.; Saikia, S. P.; Haldar, S*. Whole-cell biocatalyzed organic solvent-free conversion of dill oil to cis-(-)-dihydrocarvone rich aromatic hydrosol: Chemical and aroma profiling. Process Biochemistry 2022, 122, 86-94. (IF 4.88)
• Mahanta, B. P.; Kemprai, P.; Bora, P. K.; Lal, M.*; Haldar, S*. Phytotoxic essential oil from black turmeric (Curcuma caesia Roxb.) rhizome: Screening, efficacy, chemical basis, uptake and mode of transport. Industrial Crops and Products 2022, 180, 114788. (IF 6.44)
• Bora, P. K.; Saikia, J.; Kemprai, P.; Saikia, S. P.; Banik, D.; Haldar, S*. Evaluation of postharvest drying, key odorants and phytotoxins in Plai (Zingiber montanum) essential oil. Journal of Agricultural and Food Chemistry 2021, 69, 5500-5509. (IF 5.89)
• Bora, P. K.; Kemprai, P.; Barman, R.; Das, D.; Nazir, A.; Saikia, S. P.; Banik, D.*; Haldar, S*. A sensitive 1H NMR spectroscopic method for the quantification of capsaicin and capsaicinoid: morpho-chemical characterisation of chili land races from northeast India. Phytochemical Analysis 2021, 32, 91-103. (IF 3.02)
• Mahanta, B. P.; Bora, P. K.; Kemprai, P.; Borah, G.; Lal, M.; Haldar, S*. Thermolabile essential oils, aromas and flavours: degradation pathways, effect of thermal processing and alteration of sensory quality. Food Research International 2021, 110404. (IF 7.42)
• Kemprai, P.; Mahanta, B. P.; Bora, P. K.; Das, D. J.; Boruah, J. L. H.; Saikia, S. P.; Haldar, S*. A 1H NMR spectroscopic method for the quantification of propenylbenzenes in the essential oils: evaluation of key odorants, antioxidants and post-harvest drying techniques for Piper betle L. Food Chemistry 2020, 331, 127278. (IF 9.23)
• Mahanta, B. P.; Sarma, N.; Kemprai, P.; Begum, T.; Saikia, L.; Lal, M.*; Haldar, S*. Hydrodistillation based multifaceted value addition to Kaempferia galanga L. leaves, an agricultural residue. Industrial Crops and Products 2020, 154, 112642. (6.44)
• Mahanta, B. P.; Sut, D.; Kemprai, P.; Paw, M.; Lal, M.*; Haldar, S*. A 1H-NMR spectroscopic method for the analysis of thermolabile chemical markers from the essential oil of black turmeric (Curcuma caesia) rhizome: application in post-harvest analysis. Phytochemical Analysis 2020, 31, 28-36. (IF 3.02)

• National Post-Doctoral Fellowship (N-PDF) by SERB (2017)
• Junior Research Fellowship (JRF) (2008-2010) and Senior Research Fellowship (SRF) (2010-2013) awarded by CSIR in Chemical Sciences
• National Eligibility Test (CSIR-NET) (2008) (Chemical Sciences)
• Graduate Aptitude Test in Engineering (GATE) (2008) (All India Rank 74 in Chemistry)