Prof. Chayanika Padumadasa


B.Sc. (Colombo), Ph.D. (University of Oxford, UK)

F. I. Chem. C., C. Chem


B.Sc. – University of Colombo, Sri Lanka, 2001
Ph.D. – University of Oxford, UK, 2008
Visiting scholar – Natural Products Research Center, University of Arizona, USA, 2016/17


Undergraduate Teaching:

CHE 109 1.0 Organic Chemistry II

CHE 381 1.0 Synthetic Organic Chemistry

CHE 358 1.0 Advanced Organic Spectroscopy

ICH 365 1.0 Spectroscopic mMethods, Instrumentation and Applications III

Organic Chemistry

Research interest :

Isolation and characterization of biologically active secondary metabolites from medicinal plants. Synthesis of nano materials functionalized with phytochemicals (secondary metabolites) for therapeutic applications.

Selected Publications:

C. Padumadasa, Y. M. Xu, E. M. K. Wijeratne, P. Espinosa-Artiles, J. M. U’Ren, A. E. Arnold and A. A. L. Gunatilaka. Cytotoxic naphthoquinones and other metabolites from Teratosphaeria sp. FL2137, a fungus associated with foliage of Pinus clausa. J. Nat. Prod.2018, 81(3): 616-624.

TM Samantha Gome Tennakoon, GM Kamal Bandara Gunaherath, K Tuley Dayananda De Silva, Chayanika Padumadasa, D Siril Abeywickrama Wijesundara, Ajita Mahendra Abeysekera. Auto-oxidation of Ent-beyer-15-en-19-al isolated from the essential oil of the heartwood of Erythroxylum monogynum Roxb.: formation of 15,16-epoxy-ent-beyeran-19-oic acid and other products. BMC Chemistry 14, 18 (2020).

C P Ekanayake, M G Thammitiyagodage, S Padumadasa, B Seneviratn, C Padumadasa and Ajit Abeysekara, Acute and subacute toxicity studies of the ethyl acetate soluble proanthocyanidins of the immature inflorescence of Cocos nucifera L. in female Wistar rats, BioMed Research International 2019, 2019:1-12.

N S Adhihetty and C Padumadasa, Correlation of variation in the percentage of compounds responsible for mosquito repellent activity in citronella oil over time with mosquito repellent efficacy of commercial citronella oil samples and sprays. International Journal of Pharmaceutical Sciences and Research. 2019, 10(1): 189-194.

W T H C Wickramasinghe, L D C Peiris and C Padumadasa, Chemical and biological studies of value-added cinnamon products in the Sri Lankan market. International Journal of Pharmaceutical Sciences and Research. 2018, 9(11): 4674-4681.

K R V Bandara, C Padumadasa and L D C Peiris, Potent antibacterial, antioxidant and toxic activities of extracts from Passiflora suberosa L. leaves. PeerJ. 2018, 6:e4804.

C. Padumadasa, A. A. L. Gunatilaka. Review of Medicinal and Aromatic Plants-Industrial Profiles. J. Nat. Prod. 2017, 80 (1), 230–231.

C. Padumadasa, D. Dharmadana, A. M. Abeysekera, M. G. Thammitiyagoda. In vitro antioxidant, anti-inflammatory and anticancer activities of ethyl acetate soluble proanthocyanidins of the inflorescence of Cocos nucifera L. BMC Complimentary and Alternative Medicine. 2016, 16 (345), 1-6.

T. M. S. G. Tennakoon, A. M. Abeysekera, K. T. D. de Silva, C. Padumadasa and D. S. A. Wijesundara. Essential Oil Composition of Platostoma menthoides (L.) A. J. Paton whole plant. Journal of Essential Oil Bearing Plants. 2016, 19 (6), 1516-1520.



  • Prof M U S Sultanbawa Award for Research in Chemistry – 2017
  • Fulbright Advanced Research and Lecturing Award – 2016
  • National Research Council Merit Award – 2016
  • University of Sri Jayewardenepura Research Awards 2016-18
  • National Science Foundation SUSRED Award – 2015
  • Newton Abrahams Scholarship in Chemical Sciences, University of Oxford – 2003
  • The Royal Society of Chemistry, Sri Lanka Section – Gold Medal –  2001
  • Dharmachandra and Tamarasa Gunawardhana Memorial Gold Medal for Analytical Chemistry – 2001
  • Professor R. S. Ramakrishna Gold Medal for Inorganic Chemistry – 2001
  • Studentship for the Second Best Candidate in the First Year Examination in Science – University of Colombo – 1997
  • Merit Bursary in the   Graduateship Examination in Chemistry, Part I (Theory) – Institute of Chemistry, Ceylon –  1996



Secretary, Institute of Chemistry Ceylon – 2018 – 2020

Academic Board Member, College of Chemical Sciences, Institute of Chemistry Ceylon – 2017-2020

Director, Centre for Plant Materials and Herbal Products Research, University of Sri Jayewardenepura – 2018- 2020

Secretary, Asian Symposium on Medicinal Plants, Spices and other Natural Products XVI,  Colombo, Sri Lanka – 2018

Research Council Member, University of Sri Jayewardenepura – 2017 – 2019

Assistant Editor, Institute of Chemistry, Ceylon – 2017 – 2018

Coordinator, M. Sc. in Science and Technology of Herbal Products – 2013 – 2016

Secretary, Section E2, Sri Lanka Association of Advancement of Science –  2015

Treasurer, Chemical Society, Department of Chemistry, University of Sri Jayewardenepura – 2014/15

Rapporteur, Section E2, Sri Lanka Association of Advancement of Science – 2014

Coordinator, M. Sc. in Industrial Utilization of Medicinal and Aromatic Plants – 2011-2012

Member for Research and Higher Degree Committee – Institute of Indigenous Medicine, University of Colombo – 2018 – 2020

Fellow of the Institute of Chemistry, Ceylon

Charted Chemist, Institute of Chemistry, Ceylon


Contact information

Email :
Room : 1L026