Preliminary Phytochemical and Anti-Bacterial studies on Flowers of selected medicinal plants
نویسندگان
چکیده
The present study was aimed to evaluate the phytochemical constituents and antibacterial activity of the flower extracts of Albizia lebbeck, Cordia sebestena, Thunbergia grandiflora and Antigonon leptopus. Preliminary phytochemical screening was done by the standard methods described by Harborne. Antibacterial study was carried out by disc diffusion method. The results of the phytochemical antibacterial screening revealed the presence of higher degree of chemical diversity and antibacterial activity in the methanolic extracts of A. lebbeck and A. leptopus. Antibacterial activity is comparatively less in methanolic extracts of flowers from T. grandiflora which show the presence of only three groups of compounds (alkaloids, phenols and flavonoids). The methanolic extracts of A. lebbeck, A. leptopus and C. sebestena show the presence of several bioactive compounds. The isolation of the pure compounds and screening of the bioactivity of individual compounds of the flower extracts will give much information on the medicinal values of these plants.
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