Chemistry: Recent submissions

Now showing items 21-40 of 445

Fabrication of activated carbon/chitosan hybrid material for adsorptive removal of pb(ii)

Perera, Rajith A.; Perera, Ruwan T.; Rajapakse, Chandima. S. K. (Lviv Polytechnic National University, Lviv, Ukraine, 2024)

In this study, a novel, cost-effective and envi-ronmentally friendly activated carbon/chitosan hybrid material (ACCHM) was synthesized by incorporating surface properties of both the activated carbon derived from rice husk ...
Graphite oxide coated sand composites for efficient removal of calcium ions from hard water: isotherm, kinetics, and adsorption mechanism

Perera, W.P.R.T.; Premasinghe, Niroshan; Fernando, W.S.K.; Perera, P.L.R.A.; Sandaruwan, Chanaka; Kumarasinghe, A.R.; Liyanage, Janitha A. (Polish Ministry of Science, 2024)

Even if granular media filtration effectively reduces the turbidity of water, its limited surface functionalities and physical properties may constrain its ability to effectively remove critical contaminants from water. ...
Computational studies of antiviral properties of curry powder water extract against Norovirus infection

Weerarathne, H.K.; Sooriyawansha, A.M.S.C.; Jayawardena, P.A.S.N.P.; Kumarathunga, P.G.J.D.; Dananjaya, P.D.H.; Sandaruwan, W.A.M.; Dahanayake, J.N.; Kadigamuwa, C.C. (Society for Conservation and Resource Development of Medicinal Plant, New Delhi, India., 2023)

Curry powder is a mixture of ground spices that are typically used to enhance flavor, aroma, color, and consistency in curries. The Sri Lankan roasted curry powder “bedapu thuna paha” consists of coriander seeds (Coriandrum ...
Efficacy of methanolic extract of Zingiber officinale against seed-born fungi

Hansini, Navoda; Sooriyawansha, A.M.S.C.; Jayawardena, P.A.S.N.P.; Kumarathunga, P.G.J.D.; Dananjaya, P.D.H.; Edirisinghe, E.A.C.P.; Alwis, M.D.N.; Daranagama, D.A.; Dahanayake, J.N.; Kadigamuwa, C.C. (Society for Conservation and Resource Development of Medicinal Plant, New Delhi, India., 2023)

This study is focused on determining the efficacy of natural compounds present in Zingiber officinale methanolic plant extraction in controlling seed-born fungal pathogens Aspergillus flavus and Rhizopus oryzae. The maximum ...
Biodiesel and Its Importance as an Alternative Energy Source for the Fuel Crisis

Perera, B.S.S.; Kadigamuwa, C.C. (Young Scientists Forum (YSF) National Science and Technology Commission Sri Lanka, 2023)

Upsurging of the population throughout the world has given a negative effect on daily energy consumption. Fossil fuel reserves are decreasing gradually due to the energy demand and the need of finding alternatives is ...
Geochemical Release and Environmental Interfaces

Kadigamuwa, C.C.; Perera, N.T.; Perera, B.S.S. (John Wiley and Sons, Inc., 2023)

The geochemical release is the process of chemical weathering of minerals from their parent materials. These minerals originate from naturally occurring solids which interact with the environment through their surfaces. ...
Antioxidant, anti-inflammatory, and antimicrobial actions of Paspanguwa: A decoction of traditional five medicinal herbal mixture

Madushani, H.M.R.; Jayawardena, P.A.S.N.P.; Kadigamuwa, C.C. (Society for Conservation and Resource Development of Medicinal Plants, 2023)

The name ‘Paspanguwa’ term comes from a combination of five primary herbs Zingiber officinale, Hedyotis corymbosa, Solanum xanthocarpum, Coscinium fenestratum, and Coriandrum sativum. In the present study, water extracts ...
Preliminary studies of antioxidant and anti-inflammatory activities in methanol extracts of mistletoe (Dendrophthoe falcata) in guava (Psidium guajava)

Hashitha, Tharakee; Kadigamuwa, C.C. (Society for Conservation and Resource Development of Medicinal Plants, 2023)

Mistletoe’s antioxidants and anti-inflammatory properties, attributed to bioactive compounds, make it a potential natural remedy for oxidative stress and inflammation-related ailments. This study is focused on evaluating ...
Synthesis of Annona glabra Mediated Silver Nanoparticles, their Photocatalysis and Toxicity on Daphnia magna

Wickramarachchi, S.R.; Paragodaarachchi, Y.L.; De silva, C.R.; Perera, A.D.L.C.; Amarasinghe5, I.D. (Asian Journal of Chemistry, 2023)

This work reports the synthesis of silver nanoparticles (AgNPs) using the leaf extract of Annona glabra as a green synthetic route and assessment of its photocatalytic property using methelyne blue as a model dye and toxic ...
Extracellular extracts of antagonistic fungi,Trichoderma longibrachiatum and Trichoderma viride, as larvicides against dengue vectors, Aedes aegypti and Aedes albopictus

Perera, Dinusha S.; Tharaka, W.G. Hiruni; Amarasinghe, Deepika; Wickramarachchi, Suranga R. (2023)

Aedes aegypti and Aedes albopictus are the responsible vectors of transmitting dengue in Sri Lanka. Excessive use of chemical pesticides causes insecticide resistance.Therefore, mosquito biolarvicides remain to be an ...
Characteristics and application of animal byproduct- based films and coatings in the packaging of food products

Thakur, Rahul; Santhosh, R.; Kumar, Yaghuvendra; Suryavanshi, Vedsagar Rajesh; Singhi, Harshi; Madhubabu, D.; Wickramarachchi, Suranga; Pal, Kunal; Sarkar, Preetam (2023)

A large volume of animal byproducts remains underutilized, and low-value components such as skin, bones, feathers, heads, feet, hairs, horns, hooves, tails, cartilage, unused myofibril muscles, fins, fish scales, and whey ...
Mycosynthesis of Silver Nanoparticles (Trichoderma viride, Trichoderma longibrachiatum) and their Mosquito Larvicidal Efficacy on Dengue Vectors and Acute Toxicity on Moina macrocopa

Perera, Dinusha s.; Tharaka, W.G. hiruni; Wickramarachchi, Suranga R.; Amarasinghe, Deepika; De silva, Channa R.; Gunawardana, Thilini N. (Asian Journal of Chemistry, 2023)

Current study is based on the larvicidal effect of mycosynthesized siver nanopartices (AgNPs) from Trichoderma longibrachiatum (Tl-AgNPs) and Trichoderma viride (Tv-AgNPs) on Aedes aegypti and Aedes albopictus dengue vectors ...
Psidium guajava L. (Common Guava) Peel, Pulp and Leaves as Natural Sources of Antioxidants, Antimicrobials and Photoprotective Agents for Development of Sun Protection Cosmeceuticals

Dewage, D.; Samarakoon, S.; Karunaratne, S.; Rajapakse, N. (Asian Journal of Chemistry, 2022)

Sunscreens with natural ingredients for skin care become a new trend in cosmetology as it protects skin against photo-aging and dermatologic disorders. Therefore, the goal of this study was to evaluate the antioxidant, ...
Effect of CdTe nucleation layer on the performance of CdS/CdTe thin film solar cells

Gajanayake, G.K.U.P.; Lakmal, A.A.I.; De Silva, D.S.M.; Dassanayake, B. S. (J Mater Sci, 2023)

In this study, an electrodeposited CdTe nucleation layer (ED-CdTe*) was introduced on a chemical bath deposited (CBD) CdS layer prior to close-spaced sublimation (CSS) of the CdTe absorber layer to improve the efficiency ...
Facile, green approach for aqueous methylene blue dye adsorption: Coconut vinegar treated Trema orientalis wood biochar

Udawatta, M. M.; De Silva, R.; De Silva, D. (Environmental Engineering Research, 2022)

Biochar is widely utilized in low-cost water treatment. However, chemicals used in most of the recorded activation techniques are corrosive, may cause secondary pollution, and not accessible by rural communities, reducing ...
RNA N6-Methyladenosine (m6A) Methyltransferase-like 3 Facilitates Tumorigenesis and Cisplatin Resistance of Arecoline-Exposed Oral Carcinoma

Wang, C.; Kadigamuwa, C.; Wu, S.; Gao, Y.; Chen, W.; Gu, Y.; Wang, S.; Li, X. (Cells, 2022)

Background: Arecoline is known as the main active carcinogen found in areca nut extract that drives the pathological progression of oral squamous cell carcinoma (OSCC). Studies have revealed that dysregulation of RNA ...
Investigation and Comparison of Antioxidant Potential of Catechins Present in Green Tea: DFT Study

Wijesooriya, Sanduni S.; Pandithavidana, Dinesh R. (Chemistry Chemical Technology, 2022)

DFT calculations were applied to compare the antioxidant potential of four major catechins present in green tea. The thermodynamic parameters related to three key mechanisms of primary antioxidant action were investigated ...
Equilibrium Isotherms, Kinetics, and Thermodynamic Mechanisms of a Novel Polyacrylamide-Strychnos potatorum Seed-Derived Activated Carbon Composite for Aqueous Hardness Removal

Mathota Arachchige, Y. L. N.; Fernando, T. D. (Journal of Chemistry, 2022)

Hardness in water is responsible for both residential and industrial problems. Moreover, drinking hard water is suspected as the main cause of chronic kidney disease of unknown etiology (CKDu) in Sri Lanka. The major ...
Soybean oil and coconut oil enhance the absorption of chlorogenic acid in humans

Weerakoon, W. N. M. T. D. N.; Anjali, N. V. P.; Jayathilaka, N.; Seneviratne, K. N. (Journal of Food Biochemistry, 2021)

The effect of a mainly polyunsaturated oil (soybean oil) and a mainly medium chain triglyceride oil (coconut oil) on the absorption of the phenolic antioxidant chlorogenic acid (5-caffeoylquinic acid) was investigated using ...
Volatiles from host plant brinjal attract the brinjal Fruit and Shoot Borer -Leucinodes orbonalis Guenee

Nusra, M. S. F.; Udukala, D. N.; Amarasinghe, L. D.; Paranagama, P. A. (Journal of Asia-Pacific Entomology, 2021)

Brinjal Fruit and Shoot Borer- Leucinodes orbonalis Guenee is a major insect pest on brinjal- Solanum melongena worldwide. An effective strategy used in developing pest controlling agents is the synergism between ...

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