Search Results - "Samarasekera, Radhika"

Insecticidal activity of menthol derivatives against mosquitoes by Samarasekera, Radhika, Weerasinghe, Indira S, Hemalal, KD Patrick

“…BACKGROUND: The insecticidal activity of essential oil of Mentha piperita L. emend. Huds. against local mosquitoes as disease vectors was recognized and found…”
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Tyrosinase, elastase, hyaluronidase, inhibitory and antioxidant activity of Sri Lankan medicinal plants for novel cosmeceuticals by Liyanaarachchi, Gavini Dilkhushi, Samarasekera, Jayanetti Koralalage Ramani Radhika, Mahanama, Kariyawasam Ranaweerage Ranjith, Hemalal, Kirihettiliyanage Don Patrick

“…[Display omitted] •Artocarpus nobilis and Artocarpus altilis extracts are good sources of tyrosinase inhibitors and anti-oxidants.•Eleocarpus serratus bark…”
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Bioactive chemical constituents of Caesalpinia bonduc (Fabaceae) by Ata, Athar, Gale, Elikana M., Samarasekera, Radhika

“…From the bark of Caesalpinia bonduc, two new homoisoflavonoids, namely, caesalpinianone and 6- O-methylcaesalpinianone along with five known natural products,…”
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Glutathione S-Transferase Inhibiting Chemical Constituents of Caesalpinia bonduc by Udenigwe, Chibuike C., Ata, Athar, Samarasekera, Radhika

“…Glutathione S-transferase inhibition assay-guided fractionations on the ethanolic extract of the bark of Caesalpinia bonduc resulted in the isolation of a new…”
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Anti-inflammatory and Antioxidant Properties of Finger Millet (Eleusine coracana (L.) Gaertn.) Varieties Cultivated in Sri Lanka by Jayawardana, Sooriya Arachchige Sachini, Samarasekera, Jayanetti Koralalage Ramani Radhika, Hettiarachchi, Gardhi Hettiarachchige Chamari Madhu, Gooneratne, Jaanaki, Choudhary, Muhammad Iqbal, Jabeen, Almas

“…The prevalence of inflammatory-mediated and oxidative stress-associated diseases is increasing worldwide, creating an increasing demand for novel sources of…”
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Lactic acid bacteria isolated from fermented flour of finger millet, its probiotic attributes and bioactive properties by Divisekera, Divisekera Mudiyanselage Wasundara Devanmini, Samarasekera, Jayanetti Koralalage Ramani Radhika, Hettiarachchi, Chamari, Gooneratne, Jaanaki, Choudhary, Muhammad Iqbal, Gopalakrishnan, Subramaniam, Wahab, Atia-tul

“…This study aims to isolate and identify lactic acid bacteria from fermented flour of selected finger millet varieties grown in Sri Lanka and to evaluate their…”
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Identification of a native Bacillus thuringiensis strain from Sri Lanka active against Dipel-resistant Plutella xylostella by Baragamaarachchi, Rashini Yasara, Samarasekera, Jayanetti Koralage Ramani Radhika, Weerasena, Ovitigala Vithanage Don Sisira Jagathpriya, Lamour, Kurt, Jurat-Fuentes, Juan Luis

“…Biopesticides based on strains of the bacterium (Bt) are used globally for effective and environmentally friendly pest control. The most serious threat to the…”
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A new insecticidal protolimonoid from Aegle Marmelos by Samarasekera, J.K.R. Radhika, Khambay, Bhupinder P.S., Hemalal, K. Patrick

“…Bioassay-directed fractionation of the ethyl acetate extracts of the stem bark of Aegle marmelos Correa (Rutaceae) afforded a new compound, named skimmiarepin…”
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Development and quality evaluation of a finger millet ( Eleusine coracana (L.) Gaertn.) flour incorporated set yoghurt by Sachini Jayawardana, Sooriya Arachchige, Radhika Samarasekera, Jayanetti Koralalage Ramani, Madhu Hettiarachchi, Gardhi Hettiarachchige Chamari, Gooneratne, Mahavidanage Jaanaki

“…Nutritional and therapeutic properties of yoghurts can be enhanced by incorporating bioactive food components. The present study was focused on formulating a…”
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Glutathione S-Transferase Inhibiting Chemical Constituents of Caesalpinia bonduc by Chibuike C. UDENIGWEa, b, Athar ATAa, Radhika SAMARASEKERAc

“…Glutathione S-transferase inhibition assay-guided fractionations on the ethanolic extract of the bark of Caesalpinia bonduc resulted in the isolation of a new…”
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Cholinesterase, protease inhibitory and antioxidant capacities of Sri Lankan medicinal plants by Samaradivakara, Saroopa P., Samarasekera, Radhika, Handunnetti, Shiroma M., Weerasena, O.V.D.S. Jagath

“…[Display omitted] •Of the 17 medicinal plant extracts screened, the bark extract of Toona ciliata showed significant antioxidant capacity and marked AChE,…”
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In vitro pro-inflammatory enzyme inhibition and anti-oxidant potential of selected Sri Lankan medicinal plants by Perera, Hettiarachchige Dona Sachindra Melshandi, Samarasekera, Jayanetti Koralalage Ramani Radhika, Handunnetti, Shiroma Mangalika, Weerasena, Ovitigala Vithanage Don Sisira Jagathpriya, Weeratunga, Hasitha Dhananjaya, Jabeen, Almas, Choudhary, Muhammad Iqbal

“…The extracts of the ten selected Sri Lankan medicinal plants have been traditionally used in the treatment of inflammatory mediated diseases. The extracts were…”
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Chemical constituents of Barleria prionitis and their enzyme inhibitory and free radical scavenging activities by Ata, Athar, Kalhari, Kosmulalage S., Samarasekera, Radhika

“…From the aerial parts of Barleria prionitis, one new phenylethanoid glycoside, barlerinoside ( 1) was isolated along with six known natural products. Compound…”
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A Bioactive Resveratrol Trimer from the Stem Bark of the Sri Lankan Endemic Plant Vateria copallifera by Samaradivakara, Saroopa P, Samarasekera, Radhika, Handunnetti, Shiroma M, Weerasena, O. V. D. S. Jagathpriya, Al-Hamashi, Ayad A, Slama, James T, Taylor, William R, Alhadidi, Qasim, Shah, Zahoor A, Perera, Lalith, Tillekeratne, L. M. Viranga

“…A new resveratrol trimer, vateriferol (1), having four cis-oriented methine protons and constituting four contiguous stereocenters, was isolated from the bark…”
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Bioactivities of n-hexane fraction of Vateria copallifera and GC–MS analysis of its phytoconstituents by Samaradivakara, Saroopa P., Samarasekera, Radhika, Tillekeratne, L.M. Viranga, Handunnetti, Shiroma M., Weerasena, O.V.D.S. Jagathpriya, Taylor, William R., Alhadidi, Qasim, Shah, Zahoor A.

“…[Display omitted] •Composition of n-hexane fraction of Vateria copallifera bark was identified for the first time by Gas chromatography–Mass…”
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Glutathione S-transferase inhibitory, free radical scavenging, and anti-leishmanial activities of chemical constituents of Artocarpus nobilis and Matricaria chamomilla by Iverson, Chad D., Zahid, Shamsulhaq, Li, Yimeng, Shoqafi, Ahmed H., Ata, Athar, Samarasekera, Radhika

“…Phytochemical studies on Artocarpus nobilis and Matricaria chamomilla resulted in the isolation of compounds 1– 16. Compound ( 10) was found to be new. All of…”
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New Cycloartane-type Triterpenoids from Artocarpus nobilis by Zahid, Shamsulhaq, Ata, Athar, Samarasekera, Radhika

“…Recent phytochemical studies on the ethanolic extract of Artocarpus nobilis, collected from Sri Lanka, have resulted in the isolation of two new…”
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Glutathione S-Transferase, Acetylcholinesterase Inhibitory and Antibacterial Activities of Chemical Constituents of Barleria prionitis by Kosmulalage, Kalhari S., Zahid, Shamsulhaq, Udenigwe, Chibuike C., Akhtar, Sarfraz, Ata, Athar, Samarasekera, Radhika

“…Phytochemical studies on the ethanolic extract of Barleria prionitis of Sri Lankan origin have resulted in the isolation of a new compound, balarenone (1),…”
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Insecticidal activity of essential oils of Ceylon Cinnamomum and Cymbopogon species against Musca domestica by Samarasekera, R, Kalhari, K.S, Weerasinghe, I.S

“…Insecticidal properties of essential oils of leaf and bark of Ceylon Cinnamomum zeylanicum Blume (Lauraceae), Cymbopogon nardus Rendle (Gramineae) and…”
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Minor chemical constituents of Caesalpinia bonduc by Ata, Athar, Udenigwe, Chibuike C, Gale, Elikana M, Samarasekera, Radhika

“…From the ethanolic extract of Caesalpinia bonduc, one new diterpene, neocaesalpin P (1) and six known diterpenoids, neocaesalpin H (2), cordylane A (3),…”
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