Conference Abstracts
Permanent URI for this communityhttps://dr.ichemc.ac.lk/handle/123456789/2
News
Annual Sessions
Browse
Browsing Conference Abstracts by Issue Date
Now showing 1 - 20 of 69
- Results Per Page
- Sort Options
Item Microwave assisted acetylation of cellulose isolated from the banana pseudo-stem(Institute of Chemistry Ceylon, 2019-05) Kariyawasam,K .H .C .S; Gunathilake,M.D .M. S; De Silva,H, I,C; Abeytunga,D .T. UCellulose acetate (CA) is an ester derivative of cellulose with a wide range of industrial applications as coatings, cigarette filters, textile fibers, filtration membranes, photo films, composites, and medical and pharmaceutical products.1 Annually, a few tons of banana pseudo-stems are left behind in the plantation soil as an agro waste in Sri Lanka.Item Enhancement of crop productivity of red onion using tea-waste biochar as a soil amendment(Institute of Chemistry Ceylon, 2019-05) Peiris,C; Wathudura,P.D; Nayanathara,O; Wewalwela,J.J; Kaumal,M.N; Gajanayake,B; Gunatilake,S.RBiochar (BC) is a low cost adsorbent produced by the pyrolysis of biomass which can be used for agricultural purposes. Tea waste is an excellent biomass for BC production since it is an abundant solid waste in Sri Lanka. T he presented work was carried out to study the impact of BC as a soil amendment on the quality of Kalpitiya soil and the crop productivity within a time period of 3 months. Soil was collected from 3 different sites located at Kalpitiya during October for the greenhouse experiment where the particle size was ranged below 1 mm.Item Acute and subacute toxicity studies of the ethyl acetate soluble proanthocyanidins of immature inflorescence of Cocos nucifera L. in Wistar rats(Institute of Chemistry Ceylon, 2019-05) Ekanayake,C.P; Thammitiyagodage,M.G; Padumadasa,S; Seneviratne,B; Padumadasa,C; Abeysekera,A.MThe coconut palm, Cocos nucifera L. is a member of the monocotyledonous family, Arecaceae and mainly grows in tropical coastal areas. Ayurvedic and traditional medical practitioners of Sri Lanka use the decoction of the immature inflorescence of Cocos nucifera L. (IC) variety aurantiaca for the treatment of menorrhagiaItem Development of a new spectrophotometric method for the analysis of metformin hydrochloride in drugs administered to patients with type II diabetes(Institute of Chemistry Ceylon, 2019-05) Herath,H.M.M.B; Jayasundara,U.KDetermination of drug concentration is important, as a specific dose is needed to be administered to each patient. This dose is different from one person to another person since the effective dose (ED50 ) for one person could be deadly for another person. Therefore, it is very important to ensure that the drug has the correct amount of active ingredients present in any drug component administered to a patient as overdosing or underdosing may create critical consequences to the patient.Item Application of green synthesized palladium nanoparticles using banana leaf extract in Suzuki cross-coupling reaction(Institute of Chemistry Ceylon, 2019-05) Dantanarayana,S.O.A; De Silva,H.I.CApplication of plant extract-based nanoparticles in organic synthesis has become an emerging field today due to its biocompatibility, eco-friendliness and cost efficiency.1,2 The objectives of the present study were to develop an elementary and ecological method to synthesize palladium nanoparticles (Pd NPs) using extracts of banana leaves, which is a commonly found agro-waste in Sri Lanka, and investigate the catalytic activity of the synthesized Pd NPs in Suzuki crosscoupling reactions.Item A novel immunoanalytical method for obesity biomarker detection using antibody functionalized silver nanoparticles(Institute of Chemistry Ceylon, 2019-05) Abeysinghe,A.A.D.T; Sirimuthu,N.M.S; Perera,P.P.RObesity is a serious health issue related with increased body fat content. Escalating numbers of patients have been reported worldwide throughout the recent past, associated with a high cost in the healthcare sector. Other than being a disease condition by itself, it also acts as a risk factor for many metabolic and cardiovascular diseases.Item Method development and validation of lipid lowering drug Atorvastatin using UV-Visible spectroscopy(Institute of Chemistry Ceylon, 2019-05) Kaushalya,P.V.N; Jayasundara,U.KWith the high risk for cardiovascular diseases, statin drugs have become the life saver for millions of people around the world. Atorvastatin Calcium is one of the most commonly used lipid lowering drugs. Since this drug has been extensively used, it is essential to know the exact active ingredient concentration as the dose itself might cause negative impact on the patients.Item Microwave and open vessel digestion methods for biochar and activated carbon(Institute of Chemistry Ceylon, 2019-05) Wathudura,P.D; Peiris,C; Gunatilake,S.R; Kaumal,M.NActivated carbon (AC) and biochar (BC) are low cost carbonaceous adsorbent material widely used for the removal of toxic metal ions from aqueous systems due to their highly porous nature.Item Spectrophotometric determination of nitrite content in processed chicken products(Institute of Chemistry Ceylon, 2019-05) Somarathne,W. R. P; Chilki, K. K. D; Jayatissa,R. M. K. P; Nishadya,S. M. S; Anuththara, G. V. D; Illangakoon,M. S. A; Somapala,E. G; Udawatte,C. SNitrites are used as preservatives in processed meat. Although they are beneficial and safe at permitted levels, they can be carcinogenic when used in excess. Large doses of nitrites can also lead to a condition known as methemoglobinemia. The aim of this study is to determine whether the nitrite content in four locally available brands of processed chicken products are within the permitted levels.Item A preliminary study on green synthesis of silver nanoparticles using Annona glabra leaf extract(Institute of Chemistry Ceylon, 2019-05) Sithara,W. S; Wickramarachchi,S; De Silva,C. R; Aberathna,A. A. A .U; Amarasinghe,L .DIn this study, an eco-friendly, simple, rapid and a cost effective biological method for reducing Ag+ ions into silver nanoparticles (AgNPs) using the leaf extract of Annona glabra (A. glabra) plant has been developed. Although a number of plant extract mediated synthesis of AgNPs have been reported in the literature no previous attempt has been made on the use of A. glabra in the green synthesis of AgNPs.Item Synthesis and characterization of novel zinc ditriazine comp(Institute of Chemistry Ceylon, 2019-05) Fonseka,W.G.K; Deraniyagala,S.P; Perera,N.TTriazine derivatives have gained considerable attention due to their biological properties. Here we have focused on the synthesis and spectroscopic characterization of novel Zinc complexes bearing derivatives of 1,2,4-Ditriazine ligands (R = Me, Et, Py). Although the ditriazine scaffold was synthesized more than five decades ago,1 only a few reports exist on their metal complexes2,3 and Zn(II) complexes of ditriazine are relatively unexplored.Item Sorptive removal of p-nitroaniline from aqueous matrices by using acid modified tea waste biochar(Institute of Chemistry Ceylon, 2019-05) Block,Y.D; Dissanayake,B; Peiris,C; Gunathilake,S.RPara-Nitroaniline (PNA) is one of the most widely used synthetic precursors in the pharmaceutical industry which has been identified as a contaminant of emerging concern (CEC) due to its toxicity. Slow pyrolyzed teawaste biochar (BC), modified by shaking with 5M hydrochloric acid for 24 h at 50±5 °C, was used for the sorptive removal of PNA from aqueous systems.Item Adsorptive removal of Co(II) in aqueous solutions using Strychnos potatorum seed powder(Institute of Chemistry Ceylon, 2019-05) Ranaweera,K. H; Perera,B. AContamination of natural water bodies due to improper discharge of heavy metals has become a worldwide environmental problem. Development of low cost adsorbent materials for the removal of heavy metals, utilizing the technique of adsorption is an effective solution to this problem.Item Cinnamon wood as an adsorbant for the removal of Cu2+ from aqueous solutions(Institute of Chemistry Ceylon, 2019-05) Wijesekara,D.N; Udawatte,C.SHeavy metal water pollution remains one of the most harmful ecological and health issues globally, and Cu2+ is a common pollutant found in water bodies. Cinnamon (Cinnamomum verum or Cinnamomum zeylanicum) is native to Sri Lanka. Cinnamon wood is discarded as firewood, making it an ideal candidate as a locally available low cost adsorbent for Cu2+.Item Durian and rambutan peels as potential sources of antioxidants(Institute of Chemistry Ceylon, 2019-05) Silva,A.A.G; Wickramaarachchi,S; Attanayake,R.N; Rajapakse,C .S .KRambutan (Nephelium lappaceum L.) and Durian (Durian zibethinus Murr.) are popular seasonal fruits grown in tropical countries, enriched in varieties of phytochemicals.1, 2 However, peels of these fruits cause unpleasant odors and serious environmental problems.Item Influence of volatiles from brinjal host on the attraction of brinjal fruit and shoot borer- Leucinodes orbonalis Guenee(Institute of Chemistry Ceylon, 2019-05) Nusra,M.S.F; Paranagama,P.A; Amarasinghe,L.D; Udukala,D.NBrinjal fruit and shoot borer, Leucinodes orbonalis Guenee, is a major pest on brinjal, Solanum melongena in South and South-East Asia. Larvae cause enormous damage to brinjal pods and shoots and the population management is normally done with frequent application of insecticides.Item Plumbagin functionalized silver nanoparticles for potential antimicrobial applications(Institute of Chemistry Ceylon, 2019-05) Dammulla,I.N; Bogahawatta,L .B. A. E; Gunasekara,C. P; Weerasekara,M. M; Padumadasa,C; Sirimuthu,N. M. SPlumbago indica L. called “Rathnitul” in Sinhala is a medicinal plant belonging to the family Plumbaginaceae that is extensively used in the traditional system of medicine in Sri Lanka.Item Determination of microbiological and chemical parameters of ready-to-serve fruit drinks and carbonated beverages commercially available in Sri Lanka(Institute of Chemistry Ceylon, 2019-05) Radiyya,F.L; Somapala.E.G; Perera,M; Deraniyagala,S.PItem Cytotoxic potential and apoptotic effect of Barringtonia asiatica seed kernel against HepG2 cell line(Institute of Chemistry Ceylon, 2019-05) Paramasamy,R; Ekanayake,S; Samarakoon,S.RLiver cancer causes significant morbidity and mortality among humans worldwide due to lack of effective therapeutic strategies for control and treatment. According to World Health Organization, 7.5 % of male deaths in Sri Lanka are due to liver cancer and mortality rate due to liver cancer is increasing each year1.Item Chemical and microbiological contaminants and preservatives in commercially available tomato sauces(Institute of Chemistry Ceylon, 2019-05) Iqbal,F.N; Somapala,E. G; Perera,M; Deraniyagala,S.PTomato sauces are a part of the processed food industry which is currently amongst the fastest growing both for consumption and export making it a highly profitable industry. The present work was aimed to determine microbiological and some chemical parameters of commercially available tomato sauces.