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Item Phenetic analysis and phytochemical screening of medicinally important Albizia spp. in Sri Lanka(Ceylon Journal of Science (Biological Sciences), 2016) Jayasiri, A.P.A.; Senanayake, S.P.; Paranagama, P.; Amarasinghe, A.P.G.Albizia Durazz. is a genus of 150 species in the tropics and subtropics of the world and belongs to the sub family Mimosaceae in the Family Fabaceae. Of the six species recorded in Sri Lanka, A. lebbeck is used as a shady tree while A. odoratissima is grown mainly for their timber value, However, A. odoratissima and A. lebbeck are found to be used in ayurvedic medicine however, the medicinal properties of these species are not fully understood. A questionnaire survey was carried out using a hundred sample population to identify their medicinal usage. Floral and vegetative characters of the above two Albizia spp. were observed and phenetic relationships were identified. Air dried stem barks of A. odoratissima and A. lebbeck were subjected to sequential solvent extraction using hexane, chloroform, methanol and water, and the crude weight of the yield were obtained. The results revealed that ayurvedic physicians and traditional ayurvedic medical practitioners use A. odoratissima in medicinal preparations whereas the medicinal use of A. lebbeck is not reported. Further, it was revealed that Samanea saman and Adenanthera pavonina are commonly used as substitutes for A. lebbeck. Knowledge of phenetic variation of the two Albizia spp. can be used for accurate identification which prevents adulteration. Highest yield was obtained from the methanolic extracts. These extracts were subjected to preliminary phytochemical screening to assess the occurrence of different phytochemicals. Results have shown the presence of glylcosides, tannins, phenolics, phytosteroids and flavonoids in methanolic extracts A. odoratissima, and A. lebbeck. The present study suggests that further studies should be conducted on the identification of active compounds in these two plant species for their pharmacognostic properties in order to understand their mode of remedial action for ailments.Item Estimation of total phenolic content on stem bark extracts of selected Sri Lankan medicinal plants(National Centre for Advanced Studies in Humanities and Social Sciences Sri Lanka, 2015) Jayasiri, A.P.A.; Paranagama, P.A.; Senanayake, S.P.; Amarasinghe, A.P.G.Item Phytochemical screening and In vitro anti-inflammatory activity of stem bark of Samanea saman(National Centre for Advanced Studies, 2014) Jayasiri, A.P.A.; Paranagama, P.A.; Senanayake, S.P.; Amarasinghe, A.P.G.Item Phytochemical screening of Albezia odorantissima stem bark(Institute of Indigenous Medicine, University of Colombo, 2014) Jayasiri, A.P.A.; Paranagama, P.A.; Senanayake, S.P.; Amarasinghe, A.P.G.Item Preliminary phytochemical screening of the medicinal Plant Adenanthera pavonina and its morphological variation(Sri Lanka Journal of Indegenous Medicine (SLJIM), 2013) Jayasiri, A.P.A.; Senanayaka, S.P.; Paranagama, P.A.; Amarasinghe, A.P.G.Adenanthera pavonina L.(vernacular:Madatiya) is a medicinal plant, belongs to family Fabaceae. It is widely used for the treatments of many diseases in various therapeutic systems including Ayruveda therapeutic system. The medicinal uses and the distribution of the species were studied using a structured questionnaire survey considering 100 sample population. Morphological characters were analyzed using the specimens collected from their natural habitats to infer the phenetic relationships and has shown no variations with respect to their habitat differences. Qualitative phytochemical analysis was done to identify the chemical compounds present in the stem bark extracts of different solvents such as hexane, chloroform, methanol and water. Phytochemical screening of stem barks of the different samples confirms the presence of phytochemicals; alkaloids, flavonoids, glycosides, tannins, steroids, proteins and saponins in the extracts of the methanolic, chloroform and water. This study draws attention to the need of further analysis of the active principles of the species in order to understand their mode of action in controlling different diseases.