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Dr. R.K.Ahinsa

BSc, PhD

Head of the Department

Senior Lecturer Gr II

Education Qualification

  • PhD in Chemistry , Michigan State University,  USA.
  • B.Sc. Chemistry (Special) (First Class Hons), University of Peradeniya,  Sri Lanka.

Research Interests

  • Antioxidant profiling of underutilized wild fruits in Sri Lanka
  • Food proteomics

Employment History

  • Senior Lecturer Grade II (Assignment Basis) in Chemistry at Rajarata University of Sri Lanka (Mar 2019- Aug 2020)
  • Chemistry Research Assistant at Michigan State University (Jun 2017- Feb 2019)
  • Chemistry Teaching Assistant at Michigan State University (Aug 2014 – May 2017)
  • Temporary academic staff (Chemistry) at University of Peradeniya (Sep 2013 – July 2014)
  • Industrial training as an analytical chemist at SGS Lanka (PVT) LTD (Nov 2012 – Jan 2013)


  • Ranaweera, A.; Ratnayake, P.U.; Ekanayaka, E.A.P; DeClercq, R.; Weliky, D.P; Hydrogen–deuterium exchange supports independent membrane-interfacial fusion peptide and transmembrane domains in subunit 2 of influenza virus hemagglutinin protein, a structured and aqueous-protected connection between the fusion peptide and soluble ectodomain, and the importance of membrane apposition by the trimer-of-hairpins structure Biochemistry2019 58 (19), 2432-2446.
  • Ranaweera, A.; Ratnayake, P. U.; Weliky, D.P.; The stabilities of the soluble ectodomain and fusion peptide hairpins of the Influenza Virus Hemagglutinin subunit II protein are positively-correlated with membrane fusion Biochemistry 2018, 57(37), 5480–5493.
  • Liang, S.; Ratnayake, P. U.; Keinath, C.; Jia L.; Wolfe, R.; Ranaweera, A.; Weliky, D.P.; Efficient fusion at neutral pH by Human Immunodeficiency Virus gp41 trimers containing the fusion peptide and transmembrane domains Biochemistry2018, 57 (7), 1219-1235.
  • Jain, V., Shelby, T., Patel, T., Mekhedov, E., Petersen, J.D., Zimmerberg, J., Ranaweera, A., Weliky, D.P., Dandawate, P., Anant, S. and Sulthana, S.; A Bimodal Nanosensor for Probing Influenza Fusion Protein Activity Using Magnetic Relaxation ACS sensors 2021 6(5), 1899-1909.

Awards/ Scholarships/ Other Achievements

  • Bhikaji Framji Khan Gold Medal for Chemistry, University of Peradeniya (2014)
  • Professor H. W. Dias Scholarship for Inorganic Chemistry, University of Peradeniya (2013) 


  • Young chemist committee, 2014-2019, Michigan state university.
  • Chemical Society, 2009-2014, University of Peradeniya.



  • Head of the Department – Department of Food Technology,Faculty of Technology,RUSL(Nov 2020-Present)
  • Faculty Coordinator of the Accreditation Progress – Faculty of Technology, RUSL (Sep 2020 – present)
  • Coordinator of Science and Technology Human Resource Development (STHRD) project representing BST degree program – Faculty of Technology, RUSL (Dec 2019 – present)
  • Faculty nominee of the Internal Quality Assurance Cell (IQAC) – Faculty of Technology, RUSL (Oct 2019 – present)
  • IQAC Coordinator for the Evaluation of Quality of Academic Program (Oct 2019 – present)
  • Abstract reviewer for the Rajarata University International Research conference 2019 (Sep 2019)

Teaching programs and modules

FDT 2202 Basic Biochemistry
FDT 2305 Analytical Chemistry
FDT 2207 Food Chemistry
FDT 3203 Food Analysis
BPT 3207 Enzyme Technology
CMT 1306 Fundementals of Biology for Technology (part)