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Publication Patrick Hemalal

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Patrick Hemalal

The document lists the publications of an expert including 15 journal articles, 8 book chapters and conference proceedings, 15 communications, and 5 international posters. The publications cover topics such as bioactive constituents from Sri Lankan plants, insecticidal activity of menthol derivatives and other natural products, isolation and characterization of alkaloids, and improved analytical methods. The expert has extensively published on the identification and study of bioactive compounds from Sri Lankan medicinal plants with insecticidal and antimicrobial properties.

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1 PUBLICATIONS Journals: 1. Hemalal, K.P.; Samarasekera, R.; Ata, A. In pursuit of bioactive constituents from Sri Lankan Medicinal Plants. Planta Medica, 76(5), 2010, p.525. 2. Hemalal, K.P.; Samarasekera, R.; Weerasinghe, I. S. Insecticidal Activity of Menthol Derivatives against Mosquitoes. Pest Management Science, 64 (3), March 2008, p. 290-295. 3. K. Patrick Hemalal Bhupinder P.S. Khambay, J. K. R. Radhika Samarasekera. A New Insecticidal Protolimonoid from Aegle marmelos. Natural Product Research, Vol. 18 (2) April 2004, p. 117-122. 4. Hemalal, K.P.; Atta-Ur-Rahman, Chaudhry, M.I; Tillekeratne, L.M. Nortropane Alkaloids from Erythoxylum mooni. Heterocycles, Vol. 60, 2003 p. 917-924. 5. Hemalal, K.P.; Atta-Ur-Rahman,; Choudhary, M.I.; Tillekeratne, L.M.V. New Tropane Alkaloid from Erythroxylum mooni, Journal of Natural Products, Vol.65, 2002, p. 929-931. 6. Hemalal, K.P.; Atta-Ur-Rahman,; Night, F,; Shabbir, M.; Tillekeratne, L. M. V. Dimeric Tropane Alkaloids from Erythroxylum mooni. Phytochemistry, Vol.48, 1998, p. 377-383. Book Chapters/Conference Proceedings: 1. Hemalal, K.P.; De Costa, M.D.P.; Dissanayake, G.D.S.; Dasanayake,; Wickramasinghe, M.S. Improved Method for the determination of Anionic surfactant in cleaning products. International Conference on Chemical Sciences. 2012. 2. Hemalal, K.P.; De Costa, M.D.P.; Warnasekera, K.R.R.N.; A modified method for the determination of Total Tatty Matter of soap. Chemistry in Sri Lanka, 2010, 27(2). 3. Hemalal, K.P.; De Costa, M.D.P.; Kalhari, K.S.; Performance evaluation of market available oxidative hair dye: An improvement to SLS method. Chemistry in Sri Lanka. 2010, 27(2). 4. Hemalal, K.P.; Samarasekera, R.; Gunathilaka, W. D. S.; Balasuriya, A. S. Studies on Antimicrobial Natural Products from Terminalia arjuna. Herbal Medicines, Phytopharmaceuticals and other Natural Products:Trends and Advances. NAM S&T Centre, India and Institute of Chemistry, Ceylon, Sri Lanka, 2006, p.210-217. Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com)
2 Communications: 1. Hemalal, K.P.; Samarasekera, R.; Kalhari, K. S.; Peiris M L.; Malewana, W E U.; Weerasinghe, I. S.. Bioinsecticides for Mosquito Control in Sri Lanka. National Symposium on Mosquito Control. University of Peradeniya, Sri Lanka, September 15-16, 2005. Proceedings, p. 102-111. 2. Hemalal, K.P.; Samarasekera, R.; Gunathilaka, W. D. S.; Balasuriya, A. S. Antimicrobial Natural Products from Terminalia arjuna. International Symposium on Herbal Medicines, Phytopharmaceuticals and other Natural Products:Trends and Advances. Colombo, Sri Lanka, June 15-17, 2005. Proceedings, p. 59. 3. Hemalal, K.P.; Samarasekera, R.; Weerasinghe, I.; Kalhari, K. S,. In Pursuit of Mosquitocidal Compounds from Plant Essential Oils. International Symposium on the Chemistry of Essential Oils, Terpenes & Aromatics, October 18-21, 2002 at Tokushima Bunri University, Tokushima, Japan. 4. Hemalal, K.P.; Samarasekera, R.; Weerasinghe, I.; Kalhari, K. S. Insecticidal Properties of Menthol Derivatives against Mosquitoes. 31st Annual Sessions of Institute of Chemistry, Ceylon, 19th - 21st June, 2002, SLAAS Headquarters, Colombo, Sri Lanka. 5. Hemalal, K.P.; Samarasekera, R.; Weerasinghe, I.; Kalhari, K. S. Studies of Essential Oil Based Anti-mosquito Cream. 57th SLAAS Annual Sessions, 26th November-1St December, 2001, University of Moratuwa, Sri Lanka. 6. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Structure-Activity Relationship Studies of Acrovestone. SLAAS Annual Sessions, 27th November- 1St December, 2000, University of Peradeniya, Sri Lanka. 7. Hemalal, K.P.; Samarasekera, R; Weerasinghe, I.; Kumari, G. T. Decorative Paint with Insecticidal Properties. SLAAS Annual Sessions, 27th November-1St December, 2000, University of Peradeniya, Sri Lanka. 8. Hemalal, K.P.; Samarasekera, R; Khambay, B. P. S. In Pursuit of Insecticidal Compounds from Sri Lankan Plants. 8th International Symposium on Natural Product Chemistry. 18-22 January, 2000, Karachi, Pakistan. 9. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Synthesis and the Insecticidal activity of Acrovestone. SLAAS Annual Sessions, 2nd December, 1999, Colombo, Sri Lanka. 10. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Studies of Insecticidal Activity of Aegle marmelos. SLAAS Annual Sessions, 2nd December, 1999, Colombo, Sri Lanka. Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com)
3 11. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Sri Lankan Plants with Pest Control Properties, Seminar on Pest Control in the Next Millennium, SLAAS, Section B, 7th August, 1999, Colombo, Sri Lanka. 12. Hemalal, K.P.; Samarasekera, R.; Insecticidal Natural Products from Sri Lanka- Isolation and Synthesis, A Young Scientists Symposium, Royal Society of Chemistry, East-Anglia section, July, 1998, Cambridge, UK. 13. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Insecticidal Natural Products from Sri Lankan Plants, A Young Scientists Symposium, The Phytochemical Society of Europe, 10-13 May, 1998, Rolduc, The Netherlands. 14. Hemalal, K.P.; Chandrasena, J.P.N.R.; Tillekeratne, L.M.V.; Atta-Ur- Rahman. Potent seed germination inhibitors from wild sunflower (Tithonia diversifolia HESL) leaves. 1992, SLASS 48,122. 15. Hemalal, K.P.; Chandrasena, J.P.N.R.; Tillekeratne, L.M.V.; Isolation and characterization of coumarin as an allelochemical from Giliricida maculata H.B.K leaves. Third Tropical Weed Science conference, Vol. 1, 1990, Kuala Lumpur, Malysia. 16. Hemalal, K.P.; Chandrasena, J.P.N.R,; Tillekeratne, L.M.V. Allelopathic effect of Gliricidia maculata H.B.K on selected crop and weed species. 12th conference, Asian Pacific Weed Science Society Vol 2, 1989, Korea. International Posters: 1. Hemalal, K.P.; Gunathilaka S.; Samarasekera, R.; W. D. S.; Balasuriya, A. S. Natural Products against Oral Pathogens. International Symposium on Natural Products and Medicinal Chemistry (NPMC) and International Science Congress (ISC). Kuala Lumpur, Malaysia, August 3-6 2005. 2. Hemalal, K.P.; Khambay, B. P. S.; Samarasekera, R.; Two New Insecticidal Protolimonoids from Aegle marmelos, poster presented at the International Workshop on Technology of Application of Pesticides, 23-26 June, 2003, Kandy, Sri Lanka. 3. Hemalal, K.P,; Khambay, B. P. S.; Samarasekera, R. Three New Insecticidal Sesquiterpene Polyol Ester Alkaloids from Pleurostylia opposita, poster presented at the International Workshop on Technology of Application of Pesticides, 23-26 June, 2003, Kandy, Sri Lanka. 4. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Three New Insecticidal Sesquiterpene Polyol Ester Alkaloids from Pleurostylia opposita, poster presented at 8th International Symposium on Natural Product Chemistry. 18-22 January, 2000, Karachi, Pakistan. Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com)
4 5. Hemalal, K.P; Samarasekera, R.; Khambay, B. P. S. Two novel Protolimonoids from Aegle marmelos, poster presented at the IUPAC, 9th International Congress, London, UK, 2-7, August 1998. Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com)

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Publication Patrick Hemalal

  • 1. 1 PUBLICATIONS Journals: 1. Hemalal, K.P.; Samarasekera, R.; Ata, A. In pursuit of bioactive constituents from Sri Lankan Medicinal Plants. Planta Medica, 76(5), 2010, p.525. 2. Hemalal, K.P.; Samarasekera, R.; Weerasinghe, I. S. Insecticidal Activity of Menthol Derivatives against Mosquitoes. Pest Management Science, 64 (3), March 2008, p. 290-295. 3. K. Patrick Hemalal Bhupinder P.S. Khambay, J. K. R. Radhika Samarasekera. A New Insecticidal Protolimonoid from Aegle marmelos. Natural Product Research, Vol. 18 (2) April 2004, p. 117-122. 4. Hemalal, K.P.; Atta-Ur-Rahman, Chaudhry, M.I; Tillekeratne, L.M. Nortropane Alkaloids from Erythoxylum mooni. Heterocycles, Vol. 60, 2003 p. 917-924. 5. Hemalal, K.P.; Atta-Ur-Rahman,; Choudhary, M.I.; Tillekeratne, L.M.V. New Tropane Alkaloid from Erythroxylum mooni, Journal of Natural Products, Vol.65, 2002, p. 929-931. 6. Hemalal, K.P.; Atta-Ur-Rahman,; Night, F,; Shabbir, M.; Tillekeratne, L. M. V. Dimeric Tropane Alkaloids from Erythroxylum mooni. Phytochemistry, Vol.48, 1998, p. 377-383. Book Chapters/Conference Proceedings: 1. Hemalal, K.P.; De Costa, M.D.P.; Dissanayake, G.D.S.; Dasanayake,; Wickramasinghe, M.S. Improved Method for the determination of Anionic surfactant in cleaning products. International Conference on Chemical Sciences. 2012. 2. Hemalal, K.P.; De Costa, M.D.P.; Warnasekera, K.R.R.N.; A modified method for the determination of Total Tatty Matter of soap. Chemistry in Sri Lanka, 2010, 27(2). 3. Hemalal, K.P.; De Costa, M.D.P.; Kalhari, K.S.; Performance evaluation of market available oxidative hair dye: An improvement to SLS method. Chemistry in Sri Lanka. 2010, 27(2). 4. Hemalal, K.P.; Samarasekera, R.; Gunathilaka, W. D. S.; Balasuriya, A. S. Studies on Antimicrobial Natural Products from Terminalia arjuna. Herbal Medicines, Phytopharmaceuticals and other Natural Products:Trends and Advances. NAM S&T Centre, India and Institute of Chemistry, Ceylon, Sri Lanka, 2006, p.210-217. Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com)
  • 2. 2 Communications: 1. Hemalal, K.P.; Samarasekera, R.; Kalhari, K. S.; Peiris M L.; Malewana, W E U.; Weerasinghe, I. S.. Bioinsecticides for Mosquito Control in Sri Lanka. National Symposium on Mosquito Control. University of Peradeniya, Sri Lanka, September 15-16, 2005. Proceedings, p. 102-111. 2. Hemalal, K.P.; Samarasekera, R.; Gunathilaka, W. D. S.; Balasuriya, A. S. Antimicrobial Natural Products from Terminalia arjuna. International Symposium on Herbal Medicines, Phytopharmaceuticals and other Natural Products:Trends and Advances. Colombo, Sri Lanka, June 15-17, 2005. Proceedings, p. 59. 3. Hemalal, K.P.; Samarasekera, R.; Weerasinghe, I.; Kalhari, K. S,. In Pursuit of Mosquitocidal Compounds from Plant Essential Oils. International Symposium on the Chemistry of Essential Oils, Terpenes & Aromatics, October 18-21, 2002 at Tokushima Bunri University, Tokushima, Japan. 4. Hemalal, K.P.; Samarasekera, R.; Weerasinghe, I.; Kalhari, K. S. Insecticidal Properties of Menthol Derivatives against Mosquitoes. 31st Annual Sessions of Institute of Chemistry, Ceylon, 19th - 21st June, 2002, SLAAS Headquarters, Colombo, Sri Lanka. 5. Hemalal, K.P.; Samarasekera, R.; Weerasinghe, I.; Kalhari, K. S. Studies of Essential Oil Based Anti-mosquito Cream. 57th SLAAS Annual Sessions, 26th November-1St December, 2001, University of Moratuwa, Sri Lanka. 6. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Structure-Activity Relationship Studies of Acrovestone. SLAAS Annual Sessions, 27th November- 1St December, 2000, University of Peradeniya, Sri Lanka. 7. Hemalal, K.P.; Samarasekera, R; Weerasinghe, I.; Kumari, G. T. Decorative Paint with Insecticidal Properties. SLAAS Annual Sessions, 27th November-1St December, 2000, University of Peradeniya, Sri Lanka. 8. Hemalal, K.P.; Samarasekera, R; Khambay, B. P. S. In Pursuit of Insecticidal Compounds from Sri Lankan Plants. 8th International Symposium on Natural Product Chemistry. 18-22 January, 2000, Karachi, Pakistan. 9. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Synthesis and the Insecticidal activity of Acrovestone. SLAAS Annual Sessions, 2nd December, 1999, Colombo, Sri Lanka. 10. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Studies of Insecticidal Activity of Aegle marmelos. SLAAS Annual Sessions, 2nd December, 1999, Colombo, Sri Lanka. Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com)
  • 3. 3 11. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Sri Lankan Plants with Pest Control Properties, Seminar on Pest Control in the Next Millennium, SLAAS, Section B, 7th August, 1999, Colombo, Sri Lanka. 12. Hemalal, K.P.; Samarasekera, R.; Insecticidal Natural Products from Sri Lanka- Isolation and Synthesis, A Young Scientists Symposium, Royal Society of Chemistry, East-Anglia section, July, 1998, Cambridge, UK. 13. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Insecticidal Natural Products from Sri Lankan Plants, A Young Scientists Symposium, The Phytochemical Society of Europe, 10-13 May, 1998, Rolduc, The Netherlands. 14. Hemalal, K.P.; Chandrasena, J.P.N.R.; Tillekeratne, L.M.V.; Atta-Ur- Rahman. Potent seed germination inhibitors from wild sunflower (Tithonia diversifolia HESL) leaves. 1992, SLASS 48,122. 15. Hemalal, K.P.; Chandrasena, J.P.N.R.; Tillekeratne, L.M.V.; Isolation and characterization of coumarin as an allelochemical from Giliricida maculata H.B.K leaves. Third Tropical Weed Science conference, Vol. 1, 1990, Kuala Lumpur, Malysia. 16. Hemalal, K.P.; Chandrasena, J.P.N.R,; Tillekeratne, L.M.V. Allelopathic effect of Gliricidia maculata H.B.K on selected crop and weed species. 12th conference, Asian Pacific Weed Science Society Vol 2, 1989, Korea. International Posters: 1. Hemalal, K.P.; Gunathilaka S.; Samarasekera, R.; W. D. S.; Balasuriya, A. S. Natural Products against Oral Pathogens. International Symposium on Natural Products and Medicinal Chemistry (NPMC) and International Science Congress (ISC). Kuala Lumpur, Malaysia, August 3-6 2005. 2. Hemalal, K.P.; Khambay, B. P. S.; Samarasekera, R.; Two New Insecticidal Protolimonoids from Aegle marmelos, poster presented at the International Workshop on Technology of Application of Pesticides, 23-26 June, 2003, Kandy, Sri Lanka. 3. Hemalal, K.P,; Khambay, B. P. S.; Samarasekera, R. Three New Insecticidal Sesquiterpene Polyol Ester Alkaloids from Pleurostylia opposita, poster presented at the International Workshop on Technology of Application of Pesticides, 23-26 June, 2003, Kandy, Sri Lanka. 4. Hemalal, K.P.; Samarasekera, R.; Khambay, B. P. S. Three New Insecticidal Sesquiterpene Polyol Ester Alkaloids from Pleurostylia opposita, poster presented at 8th International Symposium on Natural Product Chemistry. 18-22 January, 2000, Karachi, Pakistan. Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com)
  • 4. 4 5. Hemalal, K.P; Samarasekera, R.; Khambay, B. P. S. Two novel Protolimonoids from Aegle marmelos, poster presented at the IUPAC, 9th International Congress, London, UK, 2-7, August 1998. Create PDF files without this message by purchasing novaPDF printer (http://www.novapdf.com)