Course/Modules Teaching for undergraduates

• Pharmaceutical Chemistry, Biochemistry, Medicinal Chemistry and Pharmacognosy, Analytical Chemistry, Pharmaceutical analysis, Research

Research and publications

Present research interests

Isolation of natural products

Special awards and prizes

• Presidential award 2002

Research publications(full paper)

• Pectin purified from pomelo (Citrus maxima) peel as a natural hatching agent for fish embryos. S.H.S. Dananjaya , L.A.U. Nayanaransi , M. Edussuriya, A.S. Dissanayake , Ilson Whang , Mahanama De Zoysa Aquaculture Research. 2020, 51, 3109.
• Growth performance and color enhancement of goldfish, Carassius auratus, fed diets containing natural dyes extracted from annatto (Bixa orellana) seeds. S.H.S Dananjaya, Prabuddha Manjula, Dissanayake, A. S. M. Edussuriya, K., Radampola, Bae Keun Park & Mahanama De Zoysa, J. App. Auquaculture. 2020, 32, 53
• Methanolic Leaf Extract ofIpomoea Pes-capraePossessesIn Vitro Sun Screen Activity. W.D.Ratnasooriya, R.N.Pathirana, A.S.Dissanayake, B.L.C.Samanmali, R.S.Banu, Imperial Journal of Interdisciplinary Research, 2017, 3, 150
• Invito sun screening activity of Codiaeumvariegatum and its two varieties. R. S. Banu, W.D. Ratnasooriya, A.S. Dissanayake, R.N. Pathirana,, , Intl. J. Sci. and Res. Pub. 2017, 7, 206
• In vitro sun screening activity of salt marshy plant Salicorniabrachiata W.D. Ratnasooriya, R.N.Pathirana, A.S.Dissanayake, B.L.C.Samanmali and P.K.Desman, Intl. J. Sci. and Res. Pub. 2016, 6, 235.
• Evaluation of invitrosun screen activities of salt marshy plantsSuaedamonoica, Suaedamaritimaand Halosarciaindica, W. D. Ratnasooriya, R. N. Pathirana, A.S. Dissanayake, B. L. C. Samanmaliand P. K. Desman, International Journal of Pharmaceutical Research & Allied Sciences, 2016, 5(2): 15-20.
• Selenocysteine substituted de novo designed luminescent Cu(I) metalloprotein. Aruna S. Dissanayakeand Michael Y. Ogawa, manuscript prepared for submission
• Photocurrent enhancement of d.c. sputtered copper oxide thin films P. Samarasekara, A. S. Disanayake, M. A. K. Mallikaarchchi, A S Abeydeera, C A N Fernando, Bull. Mater. Sci., 2005, 28, 483.
• High Photo-Voltage Zinc Oxide Thin Films Deposited by DC-Sputtering, P. Samarasekara, A.G.K. Nisantha, A. S. Disanayake Chinese J. Phy..2002 40, 196
• Compartmental Fluorescent pH Indicators with nearly Complete Predictability of Indicator Parameters: Molecular Engineering of pH Sensors, A. P. de Silva,; S. A. de Silva,; A. S. Dissanayake, J. Chem. Soc., Chem. Commun., 1989, 1054

Published abstracts of oral presentations

• Evaluation of in vitro antioxidant and sunscreening activities of different solvent extracts obtained from Drypetessepiaria (Weera) leaves. Hettihewa S.K, Kaushalya W.P.D, Dissanayake, A. S, Proc. 5 thRuhuna University International Science Conference. 2018, 82.
• Isolation and characterization of Pomelo pectin and preparation of pectin derived Ag nanoparticles, Nayanaransi L. A. U., Edussuriya M., Dissanayake A.S, Proc. 5 thRuhuna University International Science Conference. 2018, 94.
• Visual detection of Fluoride ions by a simple chromogen, Bromothymolbluediacetate., A.S. Dissanayake, W. N. R Fernando, Proc. 4 thRuhuna University International Science Conference. 2017, 20.
• A Preliminary Study of a New Chromogen Derived from Phenolphthalein for the Trace Analysis of Fluoride. KavindiLiyanage, A.S. Dissanayake, Y.M.A.Lalith. Yapa, Proc. Second Ruhuna University International Science Conference. 2015
• Isolation of natural pigments with potential photosensitizing property, A. A. D. D. Amarasinghe, A. S. Dissanayake*, and S. H. S. Dananjaya. Proc. First Ruhuna University International Science Conference. 2014.
• Colour enhancement and the growth performance of Buenos Aires (B A) tetra (Hemmigrammuscaudovittatus) fed marigold petal meal (Tageteserecta) and a commercial colour feed. J. M. S. N. Rathnapala, K. Radampola, and A.S Dissanayake. Proc. 09th Academic Sessions & Vice Chancellor’s Awards University of Ruhuna. 2012
• Inhibition Action of Lawsone on the Corrosion of Mild Steel in Acidic S.H.S.Dananjaya, M.Edusuriya, A.S DissanayakeProc. International Science and Technology Conference at Istanbul, Turk, 2011.
• Separation of Carotenoid Bixin from Annatto Seeds Using Thin-Layer Chromatography and flash Column Chromatograph, Dananjaya S. H. S., Edussuriya M., Dissanayake Aruna. S, Radampola K., Proc. JAWA International Congress at the Sri Lanka Exhibition and Convention Centre and BMICH November 2010
• Selenocysteine Variant of a Synthetic LluminescentCu(I) metalloprotein. Aruna S. Dissanayake and Michael Y. Ogawa Proc. CERMACS, Cincinati, USA. 2007,168.
• Efficient Chemiluminescence from an Adamantyl Stabilized Dioxetane in Aqueous Solution , A. P. Schaap.; A. S. Dissanayake.; K. D. Thakur, Proc. 9th Intl. Symp. onBiolumin. andChemilumin. 1996

Editorial contribution

• RuFARS
• RISTCON

Membership of professional associations

Sri Lanka Association for the Advancement of Science

• (SLAAS)- Member
• I.Chem. - Member