Keyur Raval



Date of Joining at NITK: 

Saturday, January 5, 2013

Professional Experience: 

Post Ph.D.
Dec 2008- Dec 2009 - Senior Executive at Alembic Limited, Vadodara, Gujarat
Jan 2010 - Dec 2012 - Associate Professor at Manipal Institute of Technology, MAHE, Institute of Eminence
Jan 2013 - Sept 2019 - Assistant Professor at National Institute of Technoloogy Karnataka, Surarhkal
Sept- 2019 - to date - Associate Professor at National Institute of Technoloogy Karnataka, Surarhkal

Contact Details


keyurnraval [at] nitk [dot] edu [dot] in


Areas of Interest

Enzyme cloning, Expression, Purification and characterization, Bioreactor characterization and application
Complete Profile

Significant Projects

1. CSR Grant from HEFA: Chito-oligosaccharides production from the enzymatic route, 18 lacs, (June 2022 to June 2024)
2. CSR Funding from Maire Tecnimont: Food waste to Biogas- Enrichment of Biogas to bioCNG, 11.44 lacs
3. From IMPACT79, NITK Alumni funding: Chitooligosaccharides from marine enzymes. 3.9 lacs (January 2021 to July 2022)
4. From SERB on Impact of maternal diabetes on pre-implantation embryo development: Non-invasive approach to assess embryo quality using oxygen consumption, 54 lacs (March 2017 to Sept 2021)
5. From Department of Science and Technology on Heavy metal removal on melanin coated polymer matrix, 37 lacs (March 2015 to March 2018).
6. From CAMP, NITK alumni funding: Rotating packed disc contactor for effluent treatment applications, 1.2 lacs (January 2019 to December 2019).

Supervision of Ph.D

completed (5), ongoing (2)

Significant Publications

1. Arun Kumar Subramani, Ritu Raval, Subramaniam Sundareshan, Rashmi Sivasengh, Keyur Raval. A marine chitinase from Bacillus aryabhattai with antifungal activity and broad specificity toward crystalline chitin degradation. Preparative Biochemistry & Biotechnology, 1-13, 2022,
2. Harsha Thaira, Ritu Raval, Keyur Raval. Adsorptive Bioprocess Improves Yield of Melanin from Pseudomonas stutzeri. Journal of Visualized experiments, 179, 2022, DOI: 10.3791/63339.
3. Goutam Mohan Pawaskar, Keyur Raval, Prathibha Rohit, Revathi P Shenoy, Ritu Raval. Cloning, expression, purification and characterization of chitin deacetylase extremozyme from halophilic Bacillus aryabhattai B8W22. 3 Biotech, 11(12), 1-13, 2021, DOI:
4. Aswathi Cheredath, Shubhashree Uppangala, Gitanjali Asampille, David Joseph, Keyur Raval, Nagana Gowda GA, Guruprasad Kalthur, Satish Kumar Adiga. Duration of dry and humidified incubation of single-step embryo culture medium and oxygen tension during sham culture do not alter metabolomics signature. F1000 Research, 11, 242, 2022. DOI:
5. Dhakshanya Predheepan, Akshatha Daddangadi, Shubhashree Uppangala, Sindhura Lakshmi Koulmane Laxminarayana, Keyur Raval, Guruprasad Kalthur, Borut Kovačič, Satish Kumar Adiga. Experimentally Induced Hyperglycemia in Prepubertal Phase Impairs Oocyte Quality and Functionality in Adult Mice., Endocrinology, Volume 163, Issue 9, September 2022, bqac121,
6. Archana S Nayak, Srivani Chodisetti, Shivaprasad Gadag, Usha Yogendra Nayak, Srinikethan Govindan, Keyur Raval. Tailoring solulan C24 based niosomes for transdermal delivery of donepezil: In vitro characterization, evaluation of pH sensitivity, and microneedle-assisted Ex vivo permeation. Journal of Drug Delivery Science and Technology, 60, 101945, 2020, DOI:
7. RP Kalnake, DVR Murthy, A Achar, K Raval, Residence Time Distribution Studies in a Modified Rotating Packed Disc Contactor: Mathematical Modeling and Validation, International Journal of Chemical Reactor Engineering, 18(4), 2020,
8. Screening of chitin deacetylase producing microbes from marine source using a novel receptor on agar plate, International Journal of Biological Macromolecules, 2019-06 | journal-article DOI: 10.1016/j.ijbiomac.2019.03.118
9. Expression of Bacillus licheniformis chitin deacetylase in E. coli pLysS: Sustainable production, purification and characterisation, International Journal of Biological Macromolecules, 2019 | journal-article, DOI: 10.1016/j.ijbiomac.2019.03.144
10. Harsha Thaira, Keyur Raval, Vishnu Manirethan & Raj Mohan Balakrishnan. Melanin nano-pigments for heavy metal remediation from water. Separation Science & Technology, DOI: 10.1080/01496395.2018.1443132, 2018
11. Vishnu Manirethan, Keyur Raval, Reju Rajan, Harsha Thaira, Raj Mohan Balakrishnan. Kinetic and thermodynamic studies on the adsorption of heavy metals from aqueous solution by melanin nanopigment obtained from marine source: Pseudomonas stutzeri. Journal of Environmental management, 214, 315-324, 2018.
12. Ritu Raval, Robin Simsa, Keyur Raval. Expression studies of Bacillus licheniformis chitin deacetylase in E. coli Rosetta cells. International Journal of Biological Macromolecules, Volume 104, Part B, 1692-1696, 2017
13. Keyur Raval, Kartik Gehlot, Prasanna B. D. Scale up of naringinase production process based on the constant oxygen transfer rate for a novel strain of Bacillus methylotrophicus. Preparative Biochemistry and Biotechnology, 47(2), 192-198, 2017
14. Keyur Raval, Yoshihito Kato, Jochen Buechs. Characterization of heat transfer of large orbitally shaken cylindrical bioreactors. Biochemical Engg J, 86, 1-7, 2014.
15. Ritu Raval, Keyur Raval, Satinder Kaur Brar, Mausam Verma. Proteases: Enzme aided value addition in food processing industries. Enzymes in Value addition of waste, Nova Publishers, New York
16. Keyur Raval, Jochen Buechs. Extended method to evaluate power consumption in large disposable shaking bioreactors. J Chem Eng Japan, 41 (11), 2008.
17. Keyur Raval, Yoshihito Kato, Jochen Büchs. Comparison of torque method and temperature method for determination of power consumption in disposable shaken bioreactors. Biochem. Eng. J. 34(3), 224-227, 2007.


1. 351997: Keyur Raval, Rohit Kalnake, D V R Murthy, Rotating packed disc bioreactor, patent application number: 201841000694, 06.01.2018
2. 351670: Keyur Raval, Vishnu M., Raj Mohan B., Removal Of Heavy Metals From Contaminated Water By Adsorption Using Melanin Bound Activated Carbon, application number: 201841000695, 06.01.2018
3. 368465: Raj Mohan B., Keyur Raval, Vishnu M., Method, System and Apparatus for Arsenic Removal from Water using Functionalized Melanin, application number: 201841047554, 15.12.2018
Awarded Dale Carnegie Certificate for high impact teaching skills.
• Awarded Mission10X learning approach practitioners certificate for innovative teaching methods.
• Distinguished Visiting Fellowship at University of Nottingham to research on sustainable energy using appropriate technologies in 2011.
• DAAD (Deutsche Akademische Austausch Dienst) international scholarship (May 2001-February 2002) award for pursuing research in one of the top six technical universities of Germany.


Contact us

Dr. I. Regupathi, Professor and Head
Department of Chemical Engineering, NITK, Surathkal
P. O. Srinivasnagar, Mangalore - 575 025
Karnataka, India.

  • Hot line: +91-0824-2474057

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