Browsing by Author "Wickramarachchi, P.A.S.R."

Now showing items 1-11 of 11

Activity of chitosan films containing rhizome oil of Alpinia malaccensis against Escherichia coli and Staphylococcus aureus

Samaratunge, I.N.; Wickramarachchi, P.A.S.R. (Sri Lanka Association for the Advancement of Science, 2014)
Antifungal activity of chitosan films containing dry rhizome oil of Alpinia malaccensis against Colletotrichum musae

Rasangika, W.P.M.; Wickramarachchi, P.A.S.R. (Sri Lanka Association for the Advancement of Science, 2013)
Comparative study on larvicidal activity of green synthesized silver nanoparticles and Annona glabra (Annonaceae) aqueous extract to control Aedes aegypti and Aedes albopictus (Diptera: Culicidae)

Amarasinghe, L.D.; Wickramarachchi, P.A.S.R.; Aberathna, A.A.A.U.; Sithara, W.S.; De Silva, C.R. (Heliyon 6, 2020)

The present study reports mosquito larvicidal potential of green synthesized silver nanoparticles by using Annona glabra leaves (An-AgNPs). Synthesized An-AgNPs were characterized by Ultraviolet-Visible spectroscopy (UVVIS), ...
The effect of changing the oil concentration on oil content, encapsulation efficiency and release rate of cinnamon leaf oil encapsulated chitosan microcapsules.

Muthumali, A.M.T.; Wickramarachchi, P.A.S.R. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)

Antibiosis, insect repelling and stress reducing properties of essential oils have been widely studied and well established. However, the release speeds of these compounds are usually high. Encapsulation is one of the ...
Encapsulation of 1,8-cineole with chitosan by emulsion formulation: optimization of parameters for a stable imulsion

Alahakoon, U.V.S.H.; Wickramarachchi, P.A.S.R. (Sri Lanka Association for the Advancement of Science, 2013)
Exploring bioactive compounds in the endolichenic fungus, Xylaria feejeensis, inhabiting the lichen, Graphis librata, collected from Negombo lagoon, Sri Lanka

Gunawardhana, M.H.A.Y.; Wickramarachchi, P.A.S.R.; Weerasinghe, W.R.H.; Paranagama, P.A. (Proceedings of the 1st International Conference on Frontiers in Chemical Technology, Institute of Chemistry Ceylon, 2020)

The accelerating pharmaceutical problem ofbacteria growing resistant to existing antibrotics forces the scientific community to search for new antibacterial compounds for antibiotic drug development. I-iterature reveals ...
A Novel Cytotoxic Compound From the Endolichenic Fungus, Xylaria psidii Inhabiting the Lichen, Amandinea medusulina

Santhirasegaram, S.; Wickramarachchi, P.A.S.R.; Attanayake, R.N.; Weerakoon, G.; Samarakoon, S.; Wijeratne, K.; Paranagama, P.A. (Natural Product Communication, 2020)

The lichen host, Amandinea medusulina, collected from mangrove habitats in Sri Lanka, and its associated endolichenic fungi were isolated and identified by rDNA-ITS sequence analysis and morphological features. One of the ...
Photocatalytic Activity of Biosynthesized of Silver Nanoparticles Using Leaf Extract of Annona glabra

Paragodaarachchi, Y.L.; Wickramarachchi, P.A.S.R.; De Silva, C.; Amarasinghe, L. D. (International Postgraduate Research Conference 2019, Faculty of Graduate Studies, University of Kelaniya, Sri Lanka, 2019)

Recently metallic nanoparticles were found to possess photocatalytic activity on organic molecules under visible radiation a phenomenon which will be useful in degrading and removing hazardous organic dyes. During this ...
Qualitative analysis of heavy metal adsorption by the green synthesized silver nanoparticles,

Ramanayake, R.A.D.J.; Wickramarachchi, P.A.S.R. (Proceedings of the 1st International Conference on Frontiers in Chemical Technology, Institute of Chemistry Ceylon, 2020)

Silver nanoparticles (AgNPs) have attracted high research interest because of their important applications in antimicrobial, cataiysis, and water treatment plants. They dispray totarly new and. errhanced properties compared ...
Synthesis of Chitosan Stabilized Silver Nanoparticles using Gamma Ray Irradiation and Characterization

Hettiarachchi, M.A.; Wickramarachchi, P.A.S.R. (University of Kelaniya, 2011)

Chitosan stabilized silver nanoparticles (AgNPs) were synthesized using gamma ray irradiation. Four different sample solutions were prepared [1 mM AgNO3 in 0.1% (w/v) chitosan, 1 mM AgNO3 in 0.5% (w/v) chitosan, 2 mM AgNO3 ...
Toxic potential of green synthesized silver nanoparticles using Annona glabra leaf extract against Daphnia magna

Paragodaarachchi, Y.L.; Wickramarachchi, P.A.S.R.; De Silva, C.R.; Amarasinghe, L.D. (Proceedings of the 1st International Conference on Frontiers in Chemical Technology, Institute of Chemistry Ceylon, 2020)

This study aims to evaluate the acute toxicity of biosynthetic AgNPs produced using Annona glabra leaf extract, against a selected aquatic-indicator, Daphnia magna. The toxicity of the biosynthetic AgNPs was compared against ...

Browsing by Author "Wickramarachchi, P.A.S.R."

Browsing by Author "Wickramarachchi, P.A.S.R."

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