Academic Building (B3)-Room 232
Department of Biosystems Technology
Faculty of Technology
University of Sri Jayewardenepura
Mahenwatte, Pitipana North
Homagama 10200
Sri Lanka

Email: kaushalyaabey@sjp.ac.lk

 

Dr. W.P. Kaushalya M. Abeysekera pursued her BSc. degree in Plant Biotechnology from Faculty of Science, University of Colombo in 2005 with a Second Class Upper Division. She obtained Post Graduate Diploma in Business Management (PGDMB) from the Faculty of Graduate Studies, University of Colombo in 2007 and obtained Ph.D. from University of Colombo in the area of Agricultural Technology/Plant Biotechnology in 2018. She worked as a research scientist at the Herbal Technology Section of the Industrial Technology Institute (former CISIR) for more than 14 years. Currently, she is working as a Senior Lecturer at the Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura. Her research interests include bioactive natural products/spices/foods, Nutraceuticals, and Cosmeceuticals, Herbal Technology, Scientific validation of traditional claims on health benefits of herbs and foods, and the Discovery of bioactive molecules from natural products. She has nearly 30 publications, 80 abstracts, 3 book chapters, and several awards for her credit.

Research Keywords: Bioactive natural products/spices/foods, Nutraceuticals, and Cosmeceuticals, Herbal technology, Scientific validation of traditional claims on health benefits of herbs and foods, Discovery of bioactive molecules from natural products

A study on antioxidant, anti-diabetic, anti-cancer, physicochemical, and nutritional properties of wild Oryza species (wild rice) in Sri Lanka – ongoing

 Role of the project: Co-Investigator

Duration: 1.5 years

Total funding: 2.0 Mn

Funded by: China-Sri Lanka Joint Center for Education and Research (CSL-CER), 2021

Project team: Dr. WKSM Abeysekera, Prof. Disna Ratnasekera, Dr. WPKM Abeysekera, Mr. Asanka Tennakoon

Collaboration: Department of Agriculture Biology, University of Ruhuna, Department of Agricultural Technology, Faculty of Technology, University of Colombo, China-Sri Lanka Joint Center for Education and Research

Development of Nature-Based Anti-aging Skin Brightening Products by Using Sri Lankan Plants – ongoing

 Role of the project: Co-Investigator

Duration: 1.5 years

Total funding: 2.5 Mn

Funded by: National Research Council (NRC)

Project team: Professor Nimal Punyasiri (Principal Investigator), Prof. Piyal Marasinghe, Dr. WPKM Abeysekera, Dr. WKSM Abeysekera

Collaboration: Institute of Biochemistry, Molecular Biology and Biotechnology (IBBMB), University of Colombo, Department of Agricultural Technology, Faculty of Technology, University of Colombo

A Comprehensive study on skin whitening and anti-aging properties of bark of Ceylon cinnamon (Cinnamomum zeylanicum Blume) and development of a value-added cosmeceutical-ongoing

Role of the project: Principal Investigator

Funding source: University of Sri Jayewardenepura, 2021

Total Funding: 2.96 Mn

Duration: 3 years

Project team: Dr. WPKM Abeysekera, Dr. GAS Premakumara, Dr. WKSM Abeysekera, Prof. Nilmini Liyanage, Prof. M. Iqbal Chaudry

Collaboration: HEJ Research Institute of Chemistry, University of Karachi, Pakistan, Department of Agricultural Technology, Faculty of Technology, University of Colombo, Faculty of Nursing, University of Colombo

Exploration of the endophytic fungi and their production of bioactive secondary metabolites in selected medicinal plants-ongoing

 Role of the project: Co-Investigator

Funding source: University of Sri Jayewardenepura, 2021

Total Funding: 3.0 Mn

Duration: 2 years

Selected chemical, nutritional and functional health benefits of Sri Wijeya and Sri Gemunu high yielding cinnamon varieties (Cinnamomum zeylanicum Blume) developed in Sri Lanka-ongoing

 Institution- Industrial Technology Institute (ITI), Sri Lanka

Role of the project-Co- Investigator

Total Funding: 3.0 Mn

Duration: 3 years

Investigation of endemic Ceylon cinnamon for its physico-chemical parameters, some bio activity studies and DNA bar-coding-ongoing

 Institution- Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Co- investigator

Total Funding: 3.0 Mn

Duration: 3 years

Pharmacognostical, chemical characterization and selected bioactive properties of Canarium zeylanicum and development of value-added products-ongoing

Institution- Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Co- Investigator

Total Funding: 3.0 Mn

Duration: 3 years

Development of a data base on nutritional, chemical, molecular and morphological characteristics of selected traditional and widely consuming improved rice varieties of Sri Lanka: suitability to use as chemical and molecular finger prints in identifying rice varieties at grain level – ongoing

 Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Co-Investigator

Duration: 1 year

Total funding: 10 Mn

Funded by: Treasury Sri Lanka

Extraction and analysis of anti-oxidant and anti-tyrosinase active compounds from Lotus stamens – Completed

 Institute: Herbal Technology Section, Industrial Technology Institute (ITI)

Role of the project: Co-Investigator

Duration: 6 months

Total funding: Rs. 200,000.00

Funded by: Multichemi International (Pvt) Ltd

Development of mycoacaricide formulation to manage coconut mites – Completed

Institute: Herbal Technology Section, Industrial Technology Institute (ITI)

Role of the project: Co-Investigator           

Duration: 11 months

Total funding: Rs. 380,000.00

Funded by: Coconut Research Institute

Analysis of Australian (Nugget) and Canadian (Crimson) lentils – Completed

Institute: Herbal Technology Section, Industrial Technology Institute (ITI)

Role of the project: Co-Investigator

Duration: 4 months

Total funding: Rs. 50,000.00

Funded by: Dr. P. Thavarajah, Science and Business Solutions, 414, Lamarsh road, Saskatoon, SK, S7W1B8, Canada

Bioactivity of Ceylon cinnamon (TG 11/60) – Completed

Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: PhD research

Duration: 4 Years

Total funding: 2.5 Mn

Funded by: Treasury Sri Lanka

Development of a neutraceutical capsule, tea and anti- aging cream from Moringa leaves TG (11/00/02)- Completed

Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Principal investigator

Duration: 1 year

Total funding: Rs. 100,000

Funded by: Treasury Sri Lanka

Assessment of nutritional value and analysis of quality control parameters of neutraceutical capsule, tea and anti-aging cream developed from Murunga (Moringa oleifera) leaves ((TG 13/72) – Completed

Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Principal Investigator

Duration: 1 year

Total funding: 0.4 Mn

Funded by: Treasury Sri Lanka

Development of skin whitening and anti-aging cream and moisturizer from Ceylon cinnamon (TG 14/00/01) – Completed

Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Principal Investigator

Duration: 1 year

Total funding: 0.2 Mn

Funded by: Treasury Sri Lanka

Formulation of herbal drink and herbal lozenge from Aporosa lindleyana Bail young leaves and bioactivity studies (TG 15/ 103) – Completed

Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Co-Investigator

Duration: 1 year

Total funding: 0.5 Mn

Funded by: Treasury Sri Lanka

Development of a anti-glycation  and   glycation   reversing  assay kit  addressing all stages of glycation process (TG 16/123) – completed

Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Co-Investigator

Duration: 1 year

Total funding: 2 Mn

Funded by: Treasury Sri Lanka

Establishment of proteomics assisted drug discovery programme (FP 103) – Completed

Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Co-investigator

Duration: 3 years

Total funding: Rs. 2,910,000

Funded by: National Science Foundation

Establishment of biologically relevant antioxidant bio assays covering different mode of actions: applications in R & D and commercialization – completed

 Institute: Industrial Technology Institute (ITI), Sri Lanka

Role of the project: Principal investigator

Duration: 1 year

Total funding: 1.5 Mn

Funded by: Treasury Sri Lanka

Study of some factors affecting in vitro micropropagation of Ananas comosus– Completed

Institute: Department of Plant Sciences, University of Colombo

Role of the project: Undergraduate research project

Duration: 6 months

 

CONTRACT PROJECTS

 Analysis of Australian (Nugget) and Canadian (Crimson) lentils (CP 1000302)

Funded by Dr. P. Thavarajah, Science and Business Solutions, 414, Lamarsh road, Saskatoon, SK, S7W1B8, Canada.

Standardization of Phyllanthus niruri with training/demonstration (CP 1508146)

Anti-oxidant activity of methanolic and water extracts of Phyllanthus niruri (Linn) leaves were evaluated via DPPH, ABTS, ORAC, FRAP, TPC and TFC anti-oxidant assays.

Analysis of Mangrove plants for antioxidant activity and TLC/densitometry (CP 1513872)

Anti-oxidant activity of extracts of Mangrove plants were evaluated via DPPH, ABTS, ORAC, TPC and TFC anti-oxidant assays.

Standardization of a herbal drug with training/ demonstration (CP 1513748/CP 1514696)

Anti-oxidant activity of a herbal drug was evaluated via DPPH, ABTS, ORAC, FRAP, TPC and TFC anti-oxidant assays.

CP-1517181/CP1512919- Standardization of Ayurvedic drug with demonstration

Anti-oxidant activity of Ayurvedic drug was evaluated via DPPH, ABTS, ORAC and FRAP, anti-oxidant assays.

CP-1519565 – Phytochemical screening and antioxidant activity of 4 plant extracts with demonstration

Anti-oxidant activity of 4 plant extracts were valuated via DPPH, ABTS, ORAC and FRAP anti-oxidant assays.

CP -1515334: Investigation of Curcuma albiflora

Antioxidant activity of extract of Curcuma albiflora was evaluated for TPC, TFC, DPPH, ABTS, ORAC and FRAP anti-oxidant assays.

 

 

• Functional natural products

• Functional foods

• Functionality of spices with special reference to Ceylon cinnamon

• Formulation of functional foods, nutraceuticals, and cosmeceuticals

• Isolation and characterization of bioactive natural ingredients

• Scientific validation of traditional claims on health benefits of herbs and foods

1. Postgraduate Research Award 2020- awarded by Sri Lanka Association for the Advancement of Science (SLAAS)
2. Awarded the 3^rd highest H index researcher of the Faculty of Technology for the year 2020 from the Research Council, University of Sri Jayewardenepura
3. Sri Lanka Council for Agricultural Research Policy (SLCARP) Award for Excellence in Agricultural Research 2019 – 1^st Prize in the plantation sector in consideration of the research project on “Bioactivity of Ceylon Cinnamon”
4. Achievement award in recognition of award-winning academic and scientific excellence. Awarded from the Industrial Technology Institute, 2021.
5. Appreciation award in recognition of award-winning academic and research excellence (2019, 2017, 2015, 2013), Industrial Technology Institute, Sri Lanka.
6. Best oral presentation award at food and nutrition session for the paper: Abeysekera, W. K. S. M., Abeysekera, W. P. K. M., Lakshan, S. A. T., Samaranayake, M. D. W., Liyanage, S. L., Premakumara, G. A. S., Ratnasooriya, W. D. & Sumith de Z Abeysiriwardena, D. (2019). Antioxidant Properties of Selected Pigmented and White Long Grain Rice Varieties of Sri Lanka at Market Available Polishing Rates. Proceedings of Symposium on Agro biodiversity for Climate Change Adaptation, Plant Genetic Resource Centre, Gannoruwa, Sri Lanka, pp. 44.
7. Best oral presentation award for the paper at food biochemistry, food preservation, food processing and food safety session: Lakshan S. A. T., Jayathilaka, S. I., Ulpathakumbura, B. S. K., Jayanath, N.Y. & Abeysekera, W. P. K. M. (2019). Antioxidant Properties of Methanolic and Aqueous Extracts of Different Parts of Ceylon Spinach (Talinum patenspaniculatum (Jacq.) Gaertin), Proceedings of International Conference on Agriculture and Food Security (AGROFOOD 2019), Sri Lanka, pp. 20.
8. A project titled ‘Anti-diabetic properties of selected traditional rice varieties from Sri Lanka’ selected among 10 finalists at Science Research Projects Competition 2018 organized by the National Science Foundation, Sri Lanka; Principal supervisor –Dr. W.P.K.M. Abeysekera
9. Gold medal for the session’s best oral presentation for the paper ” Lakshan, S. A. T., Jayanath, N. Y., Abeysekera, P. K. M. & Abeysekera, W. K. S. M. (2018). Antioxidant and glycemic regulatory properties of blue pea (Clitoria ternatea) flower extract, authors: 3^rd International Conference on Bioscience and Biotechnology, The International Institute of Knowledge Management (TIIKM), Colombo, Sri Lanka, A. 12.
10. Gold medal for overall best presentation for the paper: Lakshan, S .A. T., Jayanath, N. Y., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M. & Piyalunga, P. (2017). Development of a herbal drink using blue pea flower (Clitoria ternatea) and investigation of its antioxidant and anti-diabetic properties. Proceedings of the Faculty of Agriculture Undergraduate Research Symposium, pp.
11. Best presentation award at food and nutrition session for the paper: Lakshan, S. A. T., Jayanath, N. Y., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M. & Piyalunga, P. (2017). Development of a herbal drink using blue pea flower (Clitoria ternatea) and investigation of its antioxidant and anti-diabetic properties. Proceedings of the Faculty of Agriculture Undergraduate Research Symposium, pp.
12. Winner of 3 minutes presentation for the paper: Lakshan, S. A. T., Jayanath, N. Y., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M. & Piyalunga, P. (2017). Development of a herbal drink using blue pea flower (Clitoria ternatea) and investigation of its antioxidant and anti-diabetic properties. Proceedings of the Faculty of Agriculture Undergraduate Research Symposium, pp.
13. Best poster award for the paper: Abeysekera, W.K.S.M., Gunasekara, U.K.D.S.S., Premakumara, G.A.S., Abeysekera, W.P.K.M. & Ranasinghe, P. (2016). A study of the antioxidant potential of the bran of red and white rice varieties from Sri Lanka. National Science Foundation Research Summit, Sri Lanka. p. 83.
14. Merit certificate for oral presentation at Young Scientist Forum for the extended abstract: Abeysekera, W.P.K.M., Premakumara, G.A.S. & Ratnasooriya, W.D. (2014). In vitro lipase, cholesterol esterase and cholesterol micellization inhibitory activities of leaf and bark of Cinnamomum zeylanicum Blume (Ceylon cinnamon). Proceedings of the Annual Sessions, Young Scientists Forum, Sri Lanka. p.
15. Best oral presentation at Biennial Research Symposium of Industrial Technology Institute for the abstract: Abeysekera, W.P.K.M., Premakumara, G.A.S. & Ratnasooriya, W.D. (2013). In vitro anti-diabetic properties of bark and leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume). Proceedings of the Biennial research symposium, Industrial Technology Institute, Sri Lanka. pp.
16. Best oral presentation at Twenty Fourth Annual Congress of Postgraduate Institute of Agriculture, University of Peradeniya for the paper: Abeysekera, W.P.K.M., Premakumara, G.A.S. & Ratnasooriya, W.D. (2012). In vitro antioxidant properties of bark and leaf extracts of Ceylon Cinnamon (Cinnamomum zeylanicum Blume). Twenty Fourth Annual Congress, Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka. p.
17. Best poster presentation award for the poster: Abeysekera, W.K.M., Ranasinghe, P. & Premakumara, G. A. S. (2012). Antioxidant properties of leaves of Moringa oleifera tea brew collected from three different districts in Sri Lanka, International conference on chemical sciences, Institute of Chemistry, Sri Lanka (Poster 27).
18. Best poster presentation award for the poster: Wijayasiriwardena C., Abeysekera W.P.K.M. & Premakumara, G.A.S. (2011). Pharmacognostical study on Pogostemon heyneanus Benth. (Kollankola) and its adulterant Eupatorium odoratum (Podisinnomaran), Proceedings of the Young Scientist Forum Symposium, pp 47.
19. Member of Young Scientist Forum, Sri Lanka, 2010 – to date
20. Member of Sri Lanka Association for the Advancement of Science, Sri Lanka (SLAAS), 2011 – to date
21. Member of Nutrition Society, Sri Lanka, 2011 – to date
22. Member of Institute of Biology, Sri Lanka, 2018 – to date

RESEARCH PUBLICATIONS

1. Abeysekera, W.K.S.M., Jayathilaka, S.I., Abeysekera, W.P.K.M., Senevirathne, I.G.N.H., Jayanath, N.Y., Wijewardana, D.C.M.S.I. In-vitro Determination of Anti-lipidemic, Anti-inflammatory & Anti-oxidant Properties and Proximate Composition of Range of Millet Types and Sorghum Varieties in Sri Lanka, Frontiersin Sustainable Food Systems, 2022 (In press).
2. Abeysekera, P.K.M., Premakumara, G.A.S., Ratnasooriya, W.D., and Abeysekera, W.K.S.M. Anti-inflammatory, cytotoxicity and antilipidemic properties: Novel bioactivities of true cinnamon (Cinnamomum zeylanicum Blume) leaf, BMC Complementary Medicine and Alternative Therapies, 2022 (accepted).
3. Senevirathne, I.G.N.H., Abeysekera, W.K.S.M., Abeysekera, P.K.M., Jayanath, N.Y., Premakumara, G.A.S., Wijewardana, D.C.M.S.I. Antiamylase, Antiglucosidase, and Antiglycation Properties of Millets and Sorghum from Sri Lanka. Evidence-Based Complementary and Alternative Medicine, vol. 2021, Article ID 5834915, 10 pages, 2021.
4. Abeysekera, W.K.S.M., Ratnasooriya, W.D., Abeysekera, P.K.M., and Premakumara, G.A.S. Anti-Acetylcholinesterase Activity of Commercially Important Ceylon Black Tea (Camellia sinensis L.) Grades Belonging to Different Elevations: Potential Natural Product for Type 3 Diabetes Management?. Asian Food Science Journal. 20(10): 36-46, 2021.
5. Perera M.S.D, Silva R.C.L.D, Nayanajith L.D.C, Colombage H.C.D.P, Suresh T.S, Abeysekera W.P.K.M, Kottegoda I.R.M. (2021). Anti-inflammatory and antioxidant properties of Coffea Arabica/Reduced Graphene oxide nanocomposite prepared by green synthesis. Mat. Sci. Res. India. 18(3).
6. Abeysekera, W.K.S.M., Abeysekera, W.P.K.M., Lakshan, S.A.T., Samaranayake, M.D.W., Liyanage, S.L., Premakumara, G.A.S., Ratnasooriya, W.D. and Sumith de Z Abeysiriwardena, D. Antioxidant Properties of Selected Pigmented and White Long Grain Rice Varieties of Sri Lanka at Market Available Polishing Rates, Tropical Plant Research. 7(2): 415–423, 31 August 2020.
7. Lakshan, S.A.T., Pathirana, C.K., Jayanath, N.Y., Abeysekara, W.P.K.M., Abeysekara, W.K.S.M. (2020). Antioxidant and selected chemical properties of the flowers of three different varieties of Butterfly Pea (Clitoria ternatea )., Ceylon Journal of Science 49(2): 195-201, 01/04/2020.
8. Lakshan, S. A. T., Jayanath, N. Y., Abeysekera, W. P. K. M. & Abeysekera, W. K. S. M. (2019). A Commercial Potential Blue Pea (Clitoria ternatea) Flower Extract Incorporated Beverage Having Functional Properties. Evidence-Based Complementary and Alternative Medicine, Volume 2019, Article ID 291691, 1-13 pages.
9. Abeysekera, P. K. M., Arachchige, S. P. G., Abeysekera, W. K. S. M., Ratnasooriya, W. D. & Medawatta, H. M. U. I. (2019). Antioxidant and glycemic regulatory properties potential of different maturity stages of leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume) in vitro, Evidence-Based Complementary and Alternative Medicine, Volume 2019, Article ID 2693795, 1-10 pages.
10. De Silva, D.S.N., Bandara, L.L., Samanmali, B.L.C., Ratnasooriya, W.D., Pathirana, R.N. & Abeysekara, W.P.K. (2019). Investigation of sun screening and antioxidant activity of indica ver “Willard”, Journal of Pharmacognosy and Phytochemistry, 8(4), 1130-1133.
11. Kathirgamanathar, S., Abeysekera, W. P. K. M., Weerasinghe, D. M. K. P., Ranasinghe, P. & Binduhewa, A. M. C. U. (2018). Antioxidant, anti-amylase and lipid lowering potential of leaves of Aporosa lindleyana (KEBELLA), Sri Lankan Journal of Biology, 3(1), 1-10.
12. Samaranayake, M.D.W., Abeysekera, W.K.S.M., Liyanage, S.L., Premakumara, G.A.S., Abeysekera, W.P.K.M., Ratnasooriya, W. D. & Abeysiriwardena, D Sumith de Z. (2018). Physicochemical and nutritional properties of selected pigmented and white long grain rice varieties of Sri Lanka at different polishing rates, Research Journal of Chemical Sciences, 8(5), 17-23.
13. Abeysekera, W.K.S.M., Abayarathna, U.P.T.C., Premakumara, G.A.S., Jayasooriya, M.C.N. & Abeysekera, W.P.K.M. (2018). Anti-Glycation and Glycation Reversing Potential of Fenugreek (Trigonella Foenum-Graecum) Seed Extract. Biomedical Journal of Scientific & Technical Research 3(1), 5 pages.
14. Abeysekera, W.K.S.M., Jayawardana, S.A.S., Abeysekera, W.P.K.M., Yathursan, S., Premakumara, G.A.S. & Ranasinghe, P. (2017). Antioxidant potential of selected whole grain cereals consumed by Sri Lankans: A comparative in vitro Sri Lankan Journal of Biology, 2(2), 12-24.
15. Abeysekera, W.P. K. M., Arachchige, S. P. G. & Ratnasooriya, W. D. (2017). Bark extracts of Ceylon cinnamon (Cinnamomum zeylanicum Blume) possess antilipidemic activities and bind bile acids in vitro. Evidence Based Complementary and Alternative Medicine, 2017, Article ID 7347219, 10 pages.
16. Arachchige, S. P. G., Abeysekera, W. P. K. M. & Ratnasooriya, W. D. (2017). Anti-amylase, anti-cholinesterases, anti-glycation and glycation reversing potential of bark and leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume) in vitro. Evidence Based Complementary and Alternative Medicine, 2017, Article ID 5076029, 13 pages.
17. Ratnasooriya, W. D., Abeysekera, W. P. K. M., Premakumara, G. A. S., Ratnasooriya, C. D. T. & Ratnasooriya, S. G. (2017). In vitro anti-collagenase activity of Sri Lankan low grown orthodox Orange, Pekoe grade black tea (Camellia sinensis ). Research Journal of Chemical Sciences, 7(7), 11-15.
18. Abeysekera, W. K. S. M., Gunasekara, U. K. D. S. S., Arachchige, P. G. & Abeysekera, W. P. K. M. (2017). Antioxidant potential of brans of twenty-nine red and white rice (Oryza sativa L.) varieties of Sri Lanka. Journal of Coastal Life Medicine, 5(11), 480-485.
19. Kariawasam, K. W. J. C., Pathirana, R. N., Ratnasooriya, W. D., Handunnetti, S. & Abeysekera, W. P. K. M. (2017). Phytochemical profile and in vitro anti-inflammatory activity of aqueous leaf extract of Sri Lankan variety of Psidium guajava Journal of Pharmacognosy and Phytochemistry, 6(4), 16-20.
20. Abeysekera, W. K. S. M., Abeysekera, W. P. K. M., Premakumara, G. A. S. & Ratnasooriya, W. D. (2017). Physiological Free Radicals Scavenging Potential of Brans of Selected Sri Lankan Traditional Red Rice (Oryza sativa ): an In Vitro Antioxidant Activity Study. American Journal of Ethnomedicine, 4(2), 6 pages.
21. Ranaweera, C. B., Vidanagamage, A. S., Abeysekara, P. K., Silva, A. R. N., Chandana, A. K., Premakumara, S., Pathirana, R. & Ratnasooriya. W. D. (2015). In vitro effects of aqueous extracts of five Sri Lankan medicinal plants on human erythrocyte membrane stabilization activity. International journal of recent advances in multidisciplinary research, vol.  02, issue 06, p.0486-0489.
22. Ratnasooriya, W. D., Abeysekera, W. P. K. M., and Ratnasooriya, C. T. D. (2015). In vitro anti-lipase, cholesterol esterase and cholesterol micellization inhibitory activity of Sri Lankan low grown orthodox orange pekoe grade black tea (Camellia sinensis ), Journal of coastal life medicine, 3(7) p. 570-574.
23. Ranaweera, C. B., Abeysekara, P. K. M., Silva, A. R. N., Chandana, A. K., Pathirana, R. & Ratnasooriya, W. D. (2015). In vitro antioxidant activity of methanolic extracts of leaves of Indigofera indica and stems of stereospermum suaveolens grown in Sri Lanka, International Journal of Institutional Pharmacy and Life Sciences; p 128-138.
24. Ranaweera, C. B., Abeysekara, W. P., Pathirana, R. & Ratnasooriya, W. D. (2015). Lack of in vitro antihyaluronidase activity of methanolic leaf extract of Indigofera tinctoria L and methanolic stem bark extract of Stereospermum suaveolens DC, Journal of Pharmaceutical Negative Results, 6(1), p. 40-43.
25. Ratnasooriya, W. D., Abeysekera, W. P. K. M. & Ratnasooriya, C. T. D. (2014). In vitro skin whitening and lightening properties of Sri Lankan low grown orthodox Orange Pekoe grade black tea, World Journal of Pharmaceutical Sciences, 2(10), 1249-1252.
26. Ratnasooriya, W. D., Abeysekera, W. P. K. M. & Ratnasooriya, C. T. D. (2014). In vitro anti-hyaluronidase activity of Sri Lankan low grown orthodox orange pekoe grade black tea (Camellia sinensis ), Asian Pacific Journal of  Tropical Biomedicine, 4(12), 959-963.
27. Ratnasooriya, W. D., Abeysekera, W. P. K. M & Muthunayake, T. B. S. (2013). Effect of Sri Lankan Low Grown Orthodox Orange Pekoe Grade Black Tea (Camellia sinensis ) on In vitro Anti-elastase Activity, International Journal of Research in Pharmaceutical and Biomedical Sciences, 4(3), Jul– Sep 2013.
28. Abeysekera, W. P. K. M, Premakumara, G. A. S. & Ratnasooriya, W. D. (2013). In vitro antioxidant properties of bark and leaf extracts of Ceylon Cinnamon (Cinnamomum zeylanicum Blume), Tropical Agricultural Research, 24 (2), 128-138.
29. Ranasinghe, P., Ranasinghe, P., Abeysekera, W. P. K. M., Premakumara, G. A. S., Perera, Y. S., Gurugama, P. & Gunatilake, S. B. (2012). In vitro erythrocyte membrane stabilization properties of Carica papaya leaf extracts, Pharmacognosy Research, 4(04), 196-202.

COMMUNICATIONS

1. Harthika, T.L. Suraweera, N. Y. Jayanath, S. I. Jayathilaka, W. P. K. M. Abeysekera, P.D. S. M. Fernando, W. K. S. M. Abeysekera. 2021. Antioxidant properties of methanolic and aqueous flower extracts of Ceylon Spinach (Talinum paniculatum). Nutrition and Foods 2021. https://event.fourwaves.com/nutrition-and-foods-2021/abstracts/1351123f-a574-4f86-8a3c8f4741806a7b.
2. D. Weeratunge, I.G.N.H. Senevirathne, W.P.K.M. Abeysekera, G.A.S. Premakumara and W.K.S.M. Abeysekera, Antioxidants and antioxidant activity of H grade bark of Ceylon Cinnamon (Cinnamomum zeylanicum Blume), Proceedings of the 41st annual sessions of Institute of Biology (IOB), Sri Lanka; 2021, Pp 54.
3. P.K.M. Abeysekera, W.K.S.M. Abeysekera, I.G.N.H. Senevirathne, P. Ranasingha, H.D. Weerathunge, G.A.S. Premakumara, In vitro study on skin whitening and anti-aging potential of leaves of Moringa oleifera Lam. (Murunga), Proceedings of the 3rd conference of The College of Biochemists of Sri Lanka, 2021. Abstract No PP 10.
4. P.K.M. Abeysekera, Ilangasingha G.N.H. Senevirathne, Walimuni K.S.M. Abeysekera, Galbada Arachchige S. Premakumara and Wanigasekera D. Ratnasooriya, Nitric Oxide and Superoxide Radical Scavenging Activities of Sri Lankan Low Grown Orthodox Orange Pekoe Grade Black Tea (Camellia sinensis L.), International conference on Innovation and Emerging Technologies, Faculty of Technology, University of Sri Jayawardenepura, Sri Lanka, 2021. Pp. 114.
5. M. U. I. Medawatta, P. Ranasinghe, H. D. Weerathunga, W. P. K. M Abeysekera, G. A. S Premakumara, D. N. Samaraweera, and G. G. Jayasinghe (2021). Antioxidants and antioxidant activity of leaf of Sri Gemunu and Sri Wijeya (Cinnamomum zeylanicum Blume) high yielding cinnamon varieties in Sri Lanka. Proceedings of the International Conference on Innovation and Emerging Technologies (ICIET), University of Sri Jayawardenapura Sri Lanka.
6. Medawatta, H. M. U. I., Ranasinghe, P., Weerathunga, H. D., Abeysekera, W. P. K. M., Premakumara, G. A. S., Samaraweera, D. N., and Jayasinghe, G. G. (2021). Antioxidant properties of Sri Gamunu bark (Cinnamomum zeylanicum Blume) high yielding Cinnamon variety developed in Sri Lanka: an in vitro study. Proceedings of the 5^th Biennial Research Symposium, Industrial Technology Institute Sri Lanka.
7. K. S. M. Abeysekera, W. D. Ratnasooriya, I. G. N. H. Senevirathne, W. P. K. M. Abeysekera, G. A. S. Premakumara. Anti-acetylcholinesterase activity of selected commercially important Ceylon black tea (Camellia sinensis L.) grades belonging to different elevations., Annual Research Symposium, University of Colombo, 2020.
8. G.N.H. Senevirathne, H.P.T. Wathsara, W.K.S.M. Abeysekera, G.A.U. Jayasekera, W.P.K.M. Abeysekera, K.R.W. Abeywickrama. Antioxidant potential of Ceylon white tea., Proceedings of the 40^th Annual sessions of the Institute of Biology, Sri Lanka, 2020.
9. G.N.H. Senevirathne, W.K.S.M. Abeysekera, G.A.U. Jayasekera, W.P.K.M. Abeysekera, K.R.W. Abeywickrama. Anti-glycation and glycation reversing properties of Ceylon white tea. Proceedings of the 40^th Annual sessions of the Institute of Biology, Sri Lanka. Pp. 86.
10. Mylvaganam, T.L. Suraweera, N.Y. Jayanath, S.I. Jayathilaka, W.P.K.M. Abeysekera, P.D.S.M. Fernando, W.K.S.M. Abeysekera. Antioxidant properties of flower extracts of Ceylon Spinach (Talinum paniculatum)., Proceedings of the National Conference on Multidisciplinary Research, Young Scientists’ Association, National Institute of Fundamental Studies, Sri Lanka, 2020.
11. Kumari A.G.A.C, Rajawardana D.U, Abeysekera W.K.S.M, Wimalasiri K.M.S, Abeysekera W.P.K.M, Weerasinghe W.D.P, Jayanath, N.Y. Antimicrobial Potential of Brans of Sri Lankan Traditional Rice and New Improved Rice Advance breeding lines against Staphylococcus aureus., Proceedings of the Faculty of Agriculture Undergraduate Research Symposium (FAuRS-2019), Faculty of Agriculture, University of Peradeniya, Sri Lanka.
12. Jayathilaka, S. I., Jayanath, N. Y., Abeysekera, W. P. K. M. & Abeysekera, W. K. S. M. (2019). Anti-oxidant and Anti-lipidemic Properties of Selected Millet Types and Sorghum Varieties of Sri Lanka: An In vitro Study, Proceedings of the 5^th Faculty of Agriculture Undergraduate Research Symposium (FAuRS-2018), Faculty of Agriculture, University of Peradeniya, Sri Lanka, pp. 73.
13. Senevirathne, I. G. N. H., Jayanath, N. Y., Abeysekera, W. P. K. M. & Abeysekera, W. K. S. M. (2019). Novel Anti-diabetic Related Health Food Properties of Selected Millet Types and Sorghum Varieties of Sri Lanka: An In vitro Study, Proceedings of the 5^th Faculty of Agriculture Undergraduate Research Symposium (FAuRS-2018), Faculty of Agriculture, University of Peradeniya, Sri Lanka, pp. 159.
14. Abeysekera, W. K. S. M., Abeysekera, W. P. K. M., Lakshan, S. A. T., Samaranayake, M. D. W., Liyanage, S. L., Premakumara, G. A. S., Ratnasooriya, W. D. & Sumith de Z Abeysiriwardena, D. (2019). Antioxidant Properties of Selected Pigmented and White Long Grain Rice Varieties of Sri Lanka at Market Available Polishing Rates. Proceedings of Symposium on Agro biodiversity for Climate Change Adaptation, Plant Genetic Resource Centre, Gannoruwa, Sri Lanka. pp. 44.
15. Senevirathne, I.G. N. H.,Abeysekera, W. P. K. M., Abeysekera, W. K. S. M., Jayanath, N. Y., Premakumara, G. A. S., & Wijewardana, D. C. M. S. I. (2019). α-amylase and α-glucosidase enzyme inhibitory activities of selected millet types and sorghum varieties of Sri Lanka, Proceedings of Symposium on Agro biodiversity for Climate Change Adaptation, Plant Genetic Resource Centre, Gannoruwa, Sri Lanka. pp. 49.
16. Jayathilaka, S. I., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M., Jayanath, N. Y., Premakumara, G. A. S., & Wijewardana, D. C. M. S. I. (2019). Phenolic content and pancreatic lipase and cholesterol esterase inhibitory activities of selected millet types and sorghum varieties of Sri Lanka, Proceedings of Symposium on Agro biodiversity for Climate Change Adaptation, Plant Genetic Resource Centre, Gannoruwa, Sri Lanka. pp. 50.
17. Lakshan S. A. T., Jayathilaka, S. I., Ulpathakumbura, B. S. K., Jayanath, N.Y. & Abeysekera, W. P. K. M. (2019). Antioxidant Properties of Methanolic and Aqueous Extracts of Different Parts of Ceylon Spinach (Talinum patenspaniculatum (Jacq.) Gaertin), Proceedings of International Conference on Agriculture and Food Security (AGROFOOD 2019), Sri Lanka, pp. 20.
18. Abeysekera, W. P. K. M., Premakumara, G. A. S. & Ratnasooriya, W. D. (2019). Skin whitening and anti-aging potential of Ceylon cinnamon (Cinnamomum zeylanicum Blume), Proceedings of Annual Research Symposium, Faculty of Nursing, University of Colombo, Sri Lanka.
19. Weerakkody, R., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M., Ranasinghe, P., Premakumara, G. A. S. & Ratnasooriya, W. D. (2019). Antioxidants and antioxidant activity of root and stem bark of Moringa oleifera (Murunga), Proceedings of the 39^th Annual sessions of the Institute of Biology, Sri Lanka.
20. Binuwangi, A. K. D. M., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M., Premakumara, G. A. S. & Ratnasooriya, W. D. (2019). In vitro anti-diabetic potential of bark of Ceylon cinnamon (Cinnamomum zeylanicum Blume) using yeast cells glucose uptake assay, Proceedings of the 39^th Annual sessions of the Institute of Biology, Sri Lanka.
21. Thathsarani, K. D. D., Abeysekera, W. P. K. M., Weerathunga, H. D., Abeysekera, W. K. S. M. & Premakumara, G. A. S. (2019). Quantification of selected phenolic compounds in leaf and stem bark of Moringa oleifera Lam. (Murunga), Proceedings of the 39^th Annual sessions of the Institute of Biology, Sri Lanka.
22. Senevirathne, I. G. N. H., Abeysekera, W. K. S. M., Abeysekera, W. P. K. M., Jayanath, N. Y., Premakumara, G. A. S. & Wijewardana, D. C. M. S. I. (2019). Anti-Glycation and Glycation Reversing Potential of Range of Selected Millet Types and Sorghum Varieties of Sri Lanka: In Vitro Study, Proceedings of the 39^th Annual sessions of the Institute of Biology, Sri Lanka.
23. Senevirathne, I. G. N. H., Jayathilaka, S. I., Abeysekera, W. K. S. M., Abeysekera, W. P. K. M., Jayanath, N. Y., Premakumara, G. A. S. & Wijewardana, D. C. M. S. I. (2019). Proximate Composition of Range of Millet Types and Sorghum Varieties of Sri Lanka, Proceedings of the 39^th Annual sessions of the Institute of Biology, Sri Lanka.
24. Jayathilaka, S. I., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M., Jayanath, N. Y., Premakumara, G. A. S. & Wijewardana, D. C. M. S. I. (2019). Anti-oxidant and Anti-inflammatory Activities of Selected Millet Types and Sorghum Varieties of Sri Lanka: In Vitro Study, Proceedings of the 39^th Annual sessions of the Institute of Biology, Sri Lanka.
25. Wathsara, H. P. T., Abeysekera, W. K. S. M., Senevirathne, I. G. N. H., Abeysekera, W. P. K. M., Jayasekara, J. A. U. & Jayanetti, S. (2019). Anti-Glycation and Glycation Reversing Potential of Selected Traditional Foods of Sri Lanka, Proceedings of Annual Research Symposium, Faculty of Technology, University of Colombo, Sri Lanka.
26. Kandamby, S. R. H., Abeysekera, W. K. S. M., Hewajulige, I. G. N., Liyanage L. & Abeysekera, W. P. K. M. (2019). Antioxidant Potential of Selected Traditional Foods of Sri Lanka, Proceedings of the 74^th Annual sessions of the Sri Lanka Association of Advancement of Science, Sri Lanka.
27. Lakshan, S. A. T., Jayanath, N. Y., Abeysekera, P. K. M. & Abeysekera, W. K. S. M. (2018). Antioxidant and glycemic regulatory properties of blue pea (Clitoria ternatea) flower extract, 3^rd International Conference on Bioscience and Biotechnology, The International Institute of Knowledge Management (TIIKM), Colombo, Sri Lanka, A. 12.
28. Lakshan, S. A. T., Jayanath, N. Y., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M. (2018). Use of pH sensitive colour variation of blue pea flower extract in developing a colour chart as an indicator for storage stability, Proceedings of the Wayamba University International Conference, Sri Lanka, P. 281.
29. Lakshan, S. A. T., Jayanath, N. Y., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M. (2018). Evaluation of antioxidant properties of different types of Katarolu (Clitoria ternatea) flowers grown in Sri Lanka, Proceedings of the Asian Symposium of medicinal plants, spices and other natural products (ASOMPS) XVI, Colombo, Sri Lanka. pp. 135.
30. Lakshan, S.A.T., Jayanath, N.Y., Abeysekera, W.P.K.M. and Abeysekera, W.K.S.M. (2018). Valorization of Blue Pea Flower (Clitoria ternatea) through Developing a Functional Beverage. Proceedings of Annual Research Symposium, Faculty of Technology, University of Colombo, Sri Lanka. pp. 262.
31. Lokuge, P. L. C.,Weerathunge H. D., Abeysekera W. P. K. M., Premakumara G. A. S., Chandrathilake G. G. T., Samaraweera D. N. (2018). Comparative study on chemical compositions of bark and leaf essential oils of Sri Wijeya and Sri Gemunu cinnamon varieties (Cinnamomum zeylanicum Blume) developed in Sri Lanka, Proceedings of the International Forestry and Environmental Symposium, University of Sri Jayewardenepura, Sri Lanka, Volume 23, pp.58.
32. De Silva, D. S. N., Bandanra, L. L., Ratnasooriya, W. D., Pathirana, R. N., Abeysekara, W. P. K. M. (2018). Investigation of sunscreening and antioxidant activity of Mangifera indica ver “Willard”, Proceedings of the Asian Symposium of medicinal plants, spices and other natural products (ASOMPS) XVI, Colombo, Sri Lanka. pp. 210.
33. Abeysekera, W. P. K. M., Premakumara, G. A. S., Ratnasooriya, W. D. (2018). Bark extracts of Ceylon cinnamon potentiate growth inhibition and cytotoxicity in human breast carcinoma (MCF 7), hepatocarcinoma (HepG₂) and endometrial carcinoma (AN3CA) cell line, Proceedings of Annual Research Symposium, Faculty of Nursing, University of Colombo, Sri Lanka. pp. 200.
34. Karunaratne, T. D. N., Sugataratana, K., Ariyawansa, H. A. S., De Silva, H. A., Abeysekera, W. P. K. M., Medawatta, U. K. & Arawwawala, L. A. D. M. (2017). Evaluation of antioxidant activity of important memory enhancing ayurvedic formula. Proceedings of the International conference on Ayurveda, Unani, Siddha and Traditional Medicine, pp. 210.
35. Samaranayake, M. D. W., Abeysekera, W. K. S. M., Liyanage, S. L., Premakumara, G. A. S., Abeysekera, W. P. K. M & Abeysiriwardena, D. S. de Z. (2017). Physicochemical, Nutritional and Antioxidant Properties of Selected black and red whole grain rice verities developed and commercialized in Sri Lanka. Proceedings of the 3^rd Biennial Research Symposium, Sri Lanka. pp. 41-42.
36. Medawatta, H. M. U. I., Abeysekera, W. P. K. M., Premakumara, G. A. S., Peiris, M. D. P. M & Abeysekera, W. K.S. M. (2017). Antioxidants and antioxidant activity of different maturity stages of leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume) in vitro. Proceedings of the 3^rd Biennial Research Symposium, Sri Lanka. pp. 15-16.
37. Samaranayake, M. D. W., Abeysekera, W. K. S. M., Liyanage, S. L., Premakumara, G. A. S., Abeysekera, W. P. K. M. & Abeysiriwardena, D. S.de Z. (2017). Antioxidant properties of selected pigmented whole long grain rice varieties of Sri Lanka. Proceedings of the 73^rd Annual sessions of the Sri Lanka Association of Advancement of Science, pp. 179.
38. Samaranayake, M. D. W., Abeysekera, W. K. S. M., Liyanage, S. L., Premakumara, G. A. S., Abeysekera, W. P. K. M. & Abeysiriwardena, D. S.de Z. (2017). Physicochemical and nutritional properties of selected pigmented and white long grain rice varieties of Sri Lankan at different polishing rates. Proceedings of the 37^th Annual sessions of the Institute of Biology, Sri Lanka. pp. 23.
39. Lakshan, S .A. T., Jayanath, N. Y., Abeysekera, W. P. K. M., Abeysekera, W. K. S. M. & Piyalunga, P. (2017). Development of a herbal drink using blue pea flower (Clitoria ternatea) and investigation of its antioxidant and anti-diabetic properties. Proceedings of the Faculty of Agriculture Undergraduate Research Symposium, pp. 21.
40. Lakshan, S. A. T., Jayanath, N. Y., Abeysekera, W. P. K. M. & Abeysekera, W. K. S. M. (2017). Optimization of hot water extract of blue pea flower (Clitoria ternatea) by Response Surface Methodology. Proceedings of the Gari Winter Research Symposium, Colombo, Sri Lanka. pp. 96.
41. Kathirgamanathar, S., Abeysekera, W. P. K. M., Binduhewa, A. M. C. U., Ranasinghe, P. & Peiris, M.D.P.M. (2017). Development of an antioxidant rich ready to serve drink from Aporosa lindleyana (Kebella). Proceedings of the 3^rd Biennial Research Symposium, Sri Lanka. pp. 8-9.
42. Kathirgamanathar, S., Abeysekera, W. P. K. M., Weerasinghe, M. K. P., Ranasinghe, P., Binduhewa A. M. C. U. & Peiris, M. D. P. M. (2017). Aporosa lindleyana Baill. (Kebella) tea: An alternative to Green tea. Proceedings of the Sri Lanka Association for the Advancement of Science, pp. 73.
43. Karunaratne, T. D. N., Sugataratana, K., Ariyawansa, H. A. S., De Silva, H. A., Abeysekera, W. P. K. M., Medawatta, U.K., Arawwawala, D.AM. (2016). Saravatha Choorna: in vitro antioxidant activity of hot water extract. Proceedings of International Conference on Ayurveda, Unani, Siddha and Traditional Medicine, Proceedings of the 4^th International Conference on Ayurveda, Unani, Siddha and Traditional Medicine (ICAUST), Institute of Indigenous Medicine, University of Colombo, Sri Lanka. pp. 126.
44. Gayanthika, M. R. U., Godakumbura, P. I., Weerathunga, H. D., and Abeysekera, W. P. K. M. (2016). Investigation of Ceylon cinnamon bark extracts for health promoting properties as nutraceutical agent, 2^nd Symposium of BSc. [Honors] Degree in Applied Sciences, Symposium, University of Sri Jayawardanapura, Sri Lanka. pp. 42.
45. Abeysekera, W. K. S. M., Gunasekara, U. K. D. S .S., Premakumara, G .A. S., Abeysekera W. P. K. M., Ranasinghe, (2016).  A study of the antioxidant potential of the bran of red and white rice varieties from Sri Lanka. National Science Foundation Research Summit, Sri Lanka. pp. 83.
46. Jayawardana, A. S., Abeysekera, W. K. S. M., Ranasinghe, P.,. Abeysekera W. P. K. M., Premakumara, G. A. S. (2016). Antioxidants rich whole grain cereals in Sri Lanka: Potential functional substitute to wheat in food industry. National Science Foundation Research Summit, Sri Lanka. pp. 77.
47. Abeysekera, W. P. K. M., Premakumara, G. A. S., Ratnasooriya, W. D. (2016). Anti-inflammatory activity of bark of Ceylon cinnamon (Cinnamomum zeylanicum Blume), 9^th International Research Conference, General Sir John Kotelawala Defence University, pp. 260.
48. Abeysekera, W. P. K. M., Premakumara, G. A. S., Ratnasooriya W. D. (2016). Bark of Ceylon cinnamon (Cinnamomum zeylanicum Blume): A potential natural product for novel hypolipidemic functional foods and nutraceuticals, NSF Research Summit, pp. 81.
49. Abeysekera, W. P. K. M., Premakumara, G. A. S., Ratnasooriya W. D. (2016). Proanthocyanidins and selected phenolic and non phenolic compounds in bark and leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume), Proceedings of the 72^nd Annual Sessions, Sri Lanka Association for the Advancement of Science, pp. 96.
50. Abeysekera, W. P. K. M., Premakumara, G. A. S., Ratnasooriya W. D. (2016). Growth inhibition and cytotoxicity of leaf extracts of Ceylon cinnamon (Cinnamomum zeylanicum) on human breast carcinoma (MCF 7) and hepatocarcinoma (HepG₂) cell lines, Proceedings of the annual research symposium, University of Colombo, pp. 257.
51. P. K. M Abeysekera, G. A. S Premakumara, W. K. S. M Abeysekera, P. Ranasinghe, P. Fernando. (2016). Value added products developed from Moringa oleifera (Murunga) leaf: Nutritionally and functionally enhanced Tea and Leaf powder and skin whitening and anti-aging cream. International Research Conference, General Sir John Kotelawala Defence University, Sri Lanka. pp. 215.
52. Kathirgamanathar, S., Abeysekera, W. P. K. M., Weerasinghe, M. K. P., Ranasinghe, P., Binduhewa, A. M. C. U. (2016). Anti-lipase and anti-cholesterol esterase activities and binding of bile acids by leaf extracts of Aporosa lindleyana Baill. (Kebella), Proceedings of the 36^th Annual Sessions of the Institute of Biology, Sri Lanka. pp. 24.
53. Kathirgamanathar, S., Abeysekera, W. P. K. M., Weerasinghe, M. K. P., Ranasinghe, P., Binduhewa, A. M. C. U. (2016). Anti-amylase potential and phytochemical analysis of leaf extracts of Aporosa lindleyana Baill. (Kebella), Proceedings of the 4^th International Conference on Ayurveda, Unani, Siddha and Traditional Medicine (ICAUST), Institute of Indigenous Medicine, University of Colombo, Sri Lanka. pp. 135.
54. Abeysekera, W. P. K. M., Premakumara, G. A. S., Ratnasooriya W. D (2015). Glycemic regulatory properties of stem bark and leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume) in vitro,8^th International Research Conference, General Sir John Kotelawala Defence University, Sri Lanka. pp.157.
55. Abeysekera, P. K. M., Premakumara, G. A. S., Ranasinghe, P., Abeysekera, W. K. S. M., Fernando, P. and Gunasekara, U. K. D. S. S. (2015). Mineral composition of dried leaf powder of Moringa oleifera Lam. (Murunga), 8^th International Research Conference, General Sir John Kotelawala Defence University, Sri Lanka, pp. 190.
56. Abeysekera, W. P. K. M., Premakumara, G. A. S., W. D Ratnasooriya (2015). Anti-cholinesterase activity of bark and leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume) in vitro, Proceedings of the 71^st Annual Sessions, Sri Lanka Association for the Advancement of Science, pp. 46.
57. Abeysekera, W. P. K. M., Premakumara, G. A. S., Ratnasooriya W. D. (2015). Nitric oxide and superoxide radical scavenging activity of bark and leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume) in vitro, Proceedings of the 35^th Annual Sessions of the Institute of Biology, pp. 50.
58. Kathirgamanathar S., Weerasinghe D. M. K. P., Abeysekera W. P. K. M., Ranasinghe, P., and Binduhewa A. M. C. U. (2015). Antioxidant properties of leaves of Aporosa lindleyana Baill. (Kebella), Proceedings of the 35^th Annual Sessions, Institute of Biology Sri Lanka, pp. 62.
59. Jayawardana, A. S., Abeysekera, W. K. S. M.., Sutharsana, R.., Ranasinghe, P., Abeysekera W.P.K.M. and Premakumara, G.A.S. (2015). A comparative antioxidant properties of selected whole grain cereals: A preliminary in vitro study, 2^nd Biennial Research Symposium, Industrial Technology Institute, Sri Lanka, pp. 1.
60. Elamaldeniya, L. M. P. R., Ranasinghe, P., Dissanayaka, P. K., Abeysekera, W .P. K. M., Gunasekara, K. D. S. S. (2015). Evaluation of six wild fruit extracts as a sources of antioxidants in neutraceutical and cosmetic products, 2^nd Biennial Research Symposium, Industrial Technology Institute, Sri Lanka, pp. 16.
61. Abeysekera W. K. S. M, Gunasekara U. K. D. S. S, Premakumara G. A. S, Abeysekera W. P. K. M and Ranasinghe P, (2015). Antioxidant properties of brans of twenty nine rice (Oryza sativa L.) varieties of Sri Lanka, Proceedings of the 35^th Annual Sessions, Institute of Biology Sri Lanka, pp. 51.
62. Abeysekera, W. P. K. M., Premakumara, G. A. S., W. D Ratnasooriya (2014). In vitro lipase, cholesterol esterase and cholesterol micellization inhibitory activities of Ceylon cinnamon (Cinnamomum zeylanicum Blume),7^th International Research Conference, General Sir John Kotelawala Defence University, Sri Lanka, pp. 53.
63. Abeysekera, W. P. K. M., Premakumara, G. A. S., W. D Ratnasooriya (2014). Methylglyoxal mediated protein glycation inhibitory activity of Ceylon cinnamon (Cinnamomum zeylanicum Blume)- Proceedings of the 70^th Annual Sessions, Sri Lanka Association for the Advancement of Science, Sri Lanka. pp.
64. Abeysekera, W .P. K. M., Premakumara, G. A. S., Ranasinghe, P., Abeysekera, W. K. S. M., Abeysuriya , A. P. M. L., Fernando, P. and Gunasekara, U. K. B. S. S. (2014). Nutritional composition of leaves of Moringa oleifera (Murunga).  Proceedings of the 70^th Annual Sessions, Sri Lanka Association for the Advancement of Science, Sri Lanka. Pp. 136.
65. Abeysekera, W .K .S. M., Premakumara, G. A. S., Gunasekara, U. K. D. S .S., Ranasinghe, P. and Abeysekera^, P.K.M. (2014). Antioxidant properties of brans of selected improved, old improved and traditional rice varieties (Oryza sativa L.) of Sri Lanka, Proceedings of the 7^0th annual sessions, Sri Lanka Association for the Advancement of Science, Sri Lanka. pp. 67.
66. Abeysekera, W. P. K. M., Premakumara, G. A. S., W. D Ratnasooriya (2013). Anti-elastase activity of Ceylon cinnamon (Cinnamomum zeylanicum Blume): A novel skin anti-aging property, Proceedings of the 69^th annual sessions, Sri Lanka Association for the Advancement of Science, Sri Lanka. pp.
67. Abeysekera, W. K. M., Premakumara, G. A. S., W. D Ratnasooriya (2013). Glutathione S –Transferase enzyme inhibitory activity of Ceylon cinnamon (Cinnamomum zeylanicum Blume), Proceedings of the annual research symposium, University of Colombo, pp. 185.
68. Abeysekera, W. K. M., Ranasinghe, P., Premakumara, G. A. S. (2013). Anti-glycation, glycation reversing and antioxidant properties of leaves of Moringa oleifera (Murunga) tea brew, Proceedings of the 33^rd annual sessions of Institute of Biology, Sri Lanka. pp. 67.
69. Abeysekera, W. K. M., Ranasinghe, P., Premakumara, G. A. S. (2013). Anti-genotoxic potential of Ceylon cinnamon (Cinnamomum zeylanicum Blume), Proceedings of the Young Scientist Forum, pp. 2.
70. Abeysekera, W. P. K. M., Premakumara, G. A. S., W. D Ratnasooriya (2013). In vitro anti-diabetic properties of bark and leaf of Ceylon cinnamon (Cinnamomum zeylanicum Blume), Proceedings of the annual research symposium, ITI, pp. 27.
71. Abeysekera, W. K. M., Premakumara, G. A. S., W. D Ratnasooriya (2012). In vitro antioxidant properties of bark and leaf extracts of Ceylon Cinnamon (Cinnamomum zeylanicum Blume), Tropical Agricultural Research, pp. 13.
72. Abeysekera, W. K. M., Ranasinghe, P., Premakumara, G. A. S. (2012). Antioxidant properties of leaves of Moringa oleifera tea brew collected from three different districts in Sri Lanka, International conference on chemical sciences, Institute of Chemistry, Sri Lanka.
73. Abeysekera, W. K. M., Premakumara, G. A. S., W. D Ratnasooriya (2012). In vitro antioxidant properties of bark and leaf extracts of Ceylon Cinnamon (Cinnamomum zeylanicum Blume), 3^rd International conference of South Asian Association of Physiologists (SAAP-3), Sri Lanka. pp.69.
74. Wijayasiriwardena C., Abeysekera W. P. K. M. & Premakumara, G. A. S. (2011). Pharmacognostical study on Pogostemon heyneanus Benth. (Kollankola) and its adulterant Eupatorium odoratum (Podisinnomaran), Proceedings of the Young Scientist Forum Symposium, pp. 47.
75. Weeratunga, H. D., Abeysekera, W. P. K. M., Premakumara, G. A. S. & Thavarajah, P. (2011). Phenolic composition of two varieties of red lentils (Lens culinaris L.) consumed in Sri Lanka. Proceedings of Nutrition Society Annual Sessions, Sri Lanka. pp.23.
76. Ranasinghe, P., Ranasinghe, P., Abeysekera, W. P. K. M., Premakumara, G. A. S., Perera Y. S., Gurugama, P. & Gunatilake, S. B. (2011). In vitro erythrocyte membrane stabilization properties of Carica papaya leaf extracts, 3^rd International Conference on Medicinal Plants and Herbal Products, Colombo, Sri Lanka. pp. 105.
77. Abeysekera, W. K. M., Ranasinghe, P. & Premakumara, G. A. S. (2011). Antioxidant properties of Moringa oleifera leaves cultivated in Sri Lanka, 67^th SLAAS annual sessions. pp. 45.
78. Samarasekera, R., Siriwardhana, D. A. S. & Abeysekera, W. P. K. M. (2007). Antioxidant activity of the Sri Lankan variety of Nelumbo nucifera stamens and carpals. International Symposium on Chemistry, Technology and Innovation for Greater Safety and Economic Growth. Institute of Chemistry, Sri Lanka. 58-61.
79. Abeysekera, W. P. K. M. & Hirimburegama, K. (2005). Some factors affecting In vitro micropropagation of Ananas comosus (L.), Proceedings of Institute of Biology Annual Sessions, Sri Lanka. pp.21.

PATENTS

1. Lakshan, S.A.T., Jayanath N.Y., Abeysekera, W.P.K.M., Abeysekera, W.K.S.M., Arampath, P.C. 2019, July 11. Optimized Blue Katarolu Flower (Clitoria ternatea ) Extract Incorporated Sugar Free Herbal Beverage. Sri Lanka patent application no: LK/P/20607.
2. Abeysekera, W.P.K.M., Premakumara, G.A.S., Fernando, P.I.P.K., Ranasinghe, P., and Abeysekera, W.K.S.M. A herbal or pharmaceutical cream with skin-whitening and anti-ageing properties, Application date 03/10/2014, Patent application number – 17943, Sri Lanka.
3. Abeysekera, W.P.K.M., Premakumara, G.A.S., Fernando P. Herbal cosmetic formulae with skin whitening and anti-aging effects, Application date 15/09/2015, Patent application number – 18423, Sri Lanka.

BOOK CHAPTERS

1. Abeysekera, W.K.S.M., Abeysekera, W.P.K.M., Premakumara, G.A.S. & Ratnasooriya, W.D. (2021). Chapter 04 – Ancient Rice, Domestication and Traditional and Indigenous Rice (Oryza sativa L.) of Sri Lanka. In Ancient Grains in Modern Soils, Edited By: Raymond Cooper, Ph.D., Consultant, St. Louis, Missouri, USA, DESTech Publishers, USA. ISBN 978-1-60595-559-9.
2. Premakumara, G.A.S. & Abeysekera, W.P.K.M. (2020), Chapter 12: Pharmacological properties of Ceylon cinnamon, Cinnamon: Botany, Agronomy, Chemistry and Industrial Applications, Springer Nature Switzerland AG Gewerbestrasse 11, 6330 Cham, Switzerland.
3. Abeysekera, W.P.K.M., Premakumara, G.A.S. & Ratnasooriya, W.D. (2018). Ceylon cinnamon (Cinnamomum zeylanicum Blume) in Nutritional and Health Benefits of Selected Food Crops of Sri Lanka: A Concise Compilation of Scientific Findings, Institute of Biology, Sri Lanka, p. 41-62.

NEWSLETTERS

1. P.K.M. Abeysekera & W.K.S.M. Abeysekera, Moringa oleifera (Murunga): A Miracle Food Crop on the Earth. Institute of Biology (IOB), Bio news. Volume 01, Issue 02, 2021.
2. K.S.M. Abeysekera & W.P.K.M. Abeysekera, Millet and Sorghum: Healthy Food Grains for the Future. The Sri Lankan Scientist. The Premier Science Magazine in Sri Lanka. Vol 07, Issue 02, Pp. 10-12. 2021.
3. K.S.M. Abeysekera & W.P.K.M. Abeysekera, Health Benefits of Ceylon White Tea. Newsletter, Nutrition Society of Sri Lanka, Volume 01, August 2021. Pp 7-9.
4. P.K.M. Abeysekera, Cinnamomum zeylanicum Blume (Ceylon cinnamon): A multifaceted Medicinal Spice, Institute of Biology (IOB), Bio news. Volume 01, Issue 02, 2021.

NEWSPAPER ARTICLES

1. Health benefits of ‘True cinnamon’ Ceylon cinnamon in Vidya magazine of Daily Newspaper (31.01.2018).
2. Medicinal properties of Ceylon cinnamon in Silumina newspaper (09.09.2018).
3. Health benefits of Murunga leaves in Vidusara newspaper (2012.01.11)

TECHNOLOGIES/NEW PRODUCTS DEVELOPED

• Anti-glycation and glycation reversing bioassay kit
• Nutritionally and functionally enhanced Moringa oleifera Lam. (Murunga) tea
• Nutritionally and functionally enhanced Moringa oleifera Lam. (Murunga) capsule
• Skin whitening and anti-aging cream and moisturizer from Ceylon cinnamon
• Skin whitening and Anti-aging Moringa oleifera Lam. (Murunga) cream

 TECHNOLOGY TRANSFERRED

• Technology of the preparation of Moringa oleifera Lam. (Murunga) leaf powder for e Tosh Global (Pvt) Ltd, No. 21/11, Polhengoda Gardens, Narahenpita, Colombo 05, Sri Lanka. (TT 1415034).

TECHNOLOGIES AVAILABLE FOR TRANSFER

• Nutritionally and functionally enhanced Moringa oleifera Lam. (Murunga) tea
• Skin whitening and anti-aging cream and moisturizer from Ceylon cinnamon
• Skin whitening and Anti-aging Moringa oleifera Lam. (Murunga) cream
• Anti-glycation and glycation reversing bio assay kit