• A cross-sectional study of popularity and usage of skin care products among users in Gampaha district, Sri Lanka 

  Edirisinghe, J.U.; Napagoda, M.T.; Wijesekera, K. (University of Ruhuna, 2020)

  Industries offer a vast range of skincare products (SCPs) to maintain and improve the general appearance of the skin. Currently, consumers are moving towards herbal-based cosmetics even though there are several synthetic ...
• Evaluation of Antibacterial activity in Nelumbo nucifera white flower 

  Mohanasundaram, T.; Wijesekera, K.; Napagoda, M.T. (University of Ruhuna, 2020)

  Nelumbo nucifera is commonly known as “Lotus” which is highly valued in aquatic horticulture in Sri Lanka, and broadly used in the Ayurveda and Siddha systems of medicines. Extracts of different parts of this plant ...
• Determination of Total Phenolic Content (TPC) of Nemphaea nouchali and Nymphaea pubescens by Folin Ciocalteu method 

  Sundaram, T. M.; Napagoda, M.T.; Wijesekera, K.D.; Wijayaratne, Gaya B. (Institute of Chemistry Ceylon, 2020)

  Nymphaea nouchali (Nil Manel) and Nymphaea pubescens (Olu) are aquatic plants, and have a long history of use as food and folk medicine in many countries. Many phenolic compounds isolated from these two plant species ...
• Evaluation of photoprotective property and antioxidant property of Clitoria ternatea (Katarolu) 

  Jayashan, T. W. K. S. S.; Napagoda, M.T.; Wijesekara, K.A.K.D. (Institute of Chemistry Ceylon, 2020)

  Cumulative lifetime dose of ultra violet (UV) radiation has increased significantly due to many natural and artificial consequences. UV-A and UV-B radiation are considered as the major risk factors for photo dermal ...
• Perceptions held by selected Allied Health Sciences academics on Student Centered Learning and barriers to their adoption 

  Akalanka, H.M.K.; Wijesekera, K. (Sri Lanka Association for Improving Higher Education Effectiveness (SLAIHEE), 2021)

  Despite presence of novel learning techniques, many academics are still using traditional teaching methods and how many adopt Student centered learning (SCL) approaches is not reported. Thus, the aim of the study was ...
• Antibacterial activity of a herbal deodorant formulated with Nymphaea pubescens flower petals against isolated human skin microflora 

  Wanigasekara, D.N.; Samarathunga, S.A.D.I.H.; Wijesekera, K.; Wijayaratne, W.M.D.G.B.; Napagoda, M.T. (National Science and Technology Commission, 2022)

  Introduction Deodorants are personal hygienic products that are used to avoid distinctive malodorous scents, simple “body odour” of an axillary area of the human body. The body odour is caused by the interaction of ...
• Metabolite diversification by cultivation of the endophytic fungus Dothideomycete sp. in halogen containing media: Cultivation of terrestrial fungus in seawater 

  Wijesekera, K.; Mahidol, C.; Ruchirawat, S.; Kittakoop, P. (Elsevier, 2017-03-20)

  The endophytic fungus, Dothideomycete sp. CRI7, isolated from the terrestrial plant, Tiliacora triandra, was salt tolerant, capable of growing in the culture medium prepared from seawater; salts in seawater did not have ...
• First Vesicular Self‐Assembly of Crotocembraneic Acid, a Nano‐Sized Fourteen Membered Macrocyclic Diterpenic Acid 

  Bag, B.G.; Barai, A.C.; Wijesekera, K.; Kittakoop, P. (Wiley, 2017-06-19)

  Study of the spontaneous self-assembly of molecules in aqueous binary solvent mixture yielding vesicular self-assem blies has been an area of intense research in recent years because of its tremendous potential application ...
• A bioactive diterpene; Nasimalun A from Croton oblongifolius Roxb 

  Wijesekera, K. (Prayogik Rasayan, 2017-09-08)

  A clerodane type diterpene, nasimalun A was isolated from a dichloromethane extract of the leaves of Croton oblongifolius Roxb. Nasimalun A showed moderate cytotoxicity toward MOLT- 3 cell line with IC50 value of ...
• Cembrane type diterpenoids from the leaves of Croton oblongifolius Roxb. and their bioactivities 

  Wijesekera, K. (Ruhuna Journal of Medicine, 2017-12-07)

  Current study focused on the isolation, characterization and evaluation of biological activities of secondary metabolites from C. oblongifolius. Two cembrane type ditepenes; crotocembranal and crotocembraneic acid were ...
• Critical vesicular concentration (CVC) of arjunolic acid in DMSO-water using hydrophobic pyrene as a fluorescent probe 

  Ghorai, S.; Wijesekera, K.; Napagoda, M.T.; Bag, B.G. (Prayogik Rasayan, 2018-01-22)

  Self-assembly of arjunolic acid, a naturally occurring 6-6-6-6-6 trihydroxytriterpenic acid, in bilary liquid mixtures has been reported yielding vesicles of nano to micrometer diameters (B.G. Bag, R. Majumdar, RSC ...
• Determination of critical vesicular concentration (CVC) of nano-sized oleanolic acid by using hydrophobic pyerene as a fluorescence probe 

  Panja, S.K.; Wijesekera, K.D.; Napagoda, M.T.; Bag, B.G. (Prayogik Rasayan, 2018-05-14)

  Previously we have reported the spontaneous self-assembly of renewable nano-sized oleanolic acid in aqueous-organic binary solvent mixtures to form vesicles (B. G. Bag and K. Paul, Asian J. Org. Chem., 2012, 1, 150 ...
• Development of Novel Topical Cosmeceutical Formulations from Nigella sativa L. with Antimicrobial Activity against Acne-Causing Microorganisms 

  Nawarathne, N. W.; Wijesekera, K.; Wijayaratne, W. M. D. G. B.; Napagoda, M. (Hindawi, 2019-08-14)

  Acne vulgaris occurs due to the inflammation of sebaceous follicles in the skin. It is triggered by the activity of some bacterial species like Propionibacterium acnes, Staphylococcus aureus, and Staphylococcus epidermidis. ...
• A green route to phytofabricated synthesis of Gymnema sylvestre conjugated silver nanoparticles (GS-AgNPs) and its antimicrobial activity 

  Hasan, S.K.N.; Jana, S.C.; Manna, S.; Dey, A.; Wijesekera, K.; Roy, S.; Napagoda, M.T.; Bag, B.G. (Prayogik Rasayan, 2020-01-03)

  The plant-derived chemicals present in the leaf extract of Gymnema sylvestre (LEGS) commonly known as “Gurmer” has been utilized for the synthesis of Gymnema sylvestre conjugated silver nanoparticles (GS-AgNPs) at room ...
• Development and Evaluation of a Novel Herbal Emulgel for Potential Anti-Inflammatory and Antioxidant Activities in Vitro 

  Srilal, T.L.I.; Hettihewa, S.K. (CINEC Academic Journal, Sri Lanka, 2021)

  Emulgel is a novel topical drug delivery system which can overcome the major limitation of gel; limited delivery of hydrophobic drugs. Leea indica (Burm.f.) Merr. (Burulla) is a medicinal plant used in Sri Lankan ...
• Development of a novel herbal balm with Leea indica (Burm.f.) Merr (Burulla) leaf extract and in vitro evaluation of anti-inflammatory and radical scavenging activities 

  Hettihewa, S.K.; Srilal, T.L.I. (Asian Journal of Pharmacognosy Society, 2021-06-19)

  The demand for the utilization of herbal medicine is rising due to their high efficacy, affordability, ease of use, better adaptability with human body and lesser side effects. Leea indica (Burm.f.)Merr. (Burulla) is ...
• Development of Herbal Green Tea Bags with Osbeckia octandra L. (DC.) (Heen bovitiya) and Evaluation of the Effect of Infusion Time and Temperature on Extracted Phytochemicals 

  Silva, P.D.S.A.; Hettihewa, S.K.; Hettihewa, L.M. (CINEC Academic Journal, Sri Lanka, 2021)

  Herbal tea or a tisane is a mixture of dried plant parts used for medicinal purposes. Present study was aimed to develop herbal green tea bags with Osbeckia octandra (Heen bovitiya) leaves predominantly and evaluate ...
• Effects of infusion conditions on in vitro antioxidant power of extracts obtained from nutraceutical tea products developed with Osbeckia octandra and black tea leaves 

  Hettihewa, S.K.; Silva, P.D.S.A. (Asian Journal of Pharmacognosy Society, 2021-08-07)

  The present study was aimed at developing herbal tea bags using Osbeckia octandra leaves as the major ingredient and evaluating the effect of infusion conditions on their in-vitro antioxidant power of biologically ...
• Phytochemical evaluation, in-vitro radical scavenging and antioxidant activities of aqueous leaf extract of Heen Bovitiya (Osbeckia octandra L. (DC.) grown in Sri Lanka 

  Hettihewa, S.K.; Silva, P.D.S.A. (Asian Journal of Pharmacognosy Society, 2021-09-19)

  Osbeckia octandra L. (DC.) is an endemic plant which belongs to the family Melastomataceae and highly used in Sri Lankan Ayurvedic medicine. The aim of the present study was to evaluate total phenolic (TP), flavonoid ...
• Phytochemical Analysis and Evaluation of In-VitroAntioxidantActivity of Bark Extractsfrom Madhuca longifolia (Madhu) and Ficus racemosa (Attikka) Grown in Sri Lanka 

  Hettihewa, S.K.; Ruwanpathirana, C.M.; Panangalage, P. (CINEC Academic Journal, Sri Lanka, 2022-09-07)

  Madhuca longifolia (Maddhu) and Ficus racemosa (Attikka) are well known medicinal plants which have been valued for decades in Sri Lankan Ayurvedic medicine. This research was aimed to study the phytochemical analysis ...

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