Niranjan MH, Prabhurajeshwar C*
Associate Professor Department of Studies in Biotechnology, Davangere University, Davangere-577007, Karnataka, India
*Address for Corresponding Author
Dr. Prabhurajeshwar
Assistant Professor Department of Studies in Biotechnology, Davangere University, Davangere-577007, Karnataka, India
Abstract
Objective: Alternanthera paronychioides A.St.-Hil. is belongs to the family Amaranthaceae. A native of tropical America becoming widespread as an introduced weed in India, Java and other parts of the old world tropics. The objective of the study of this plant is to determine the bioactive chemical constituents and to evaluate leaf and stem crude extracts for in vitro antimicrobial activities by agar disc diffusion method. Material and methods: Phytochemical analysis of the crude extracts of leaf and stem parts revealed the presence of tannins, saponins, anthraquinones, glycosides, flavonoids and reducing sugar. Results and conclusion: The crude extracts leaf and stem were showed effective against the Staphylococcus aureus, Escherichia coli, Salmonella typhi and Bacillus subtilis. The minimum inhibitory concentrations (MIC) of the crude extracts were determined for the various organisms which ranged between 5.0 and 37.0 mg/ml. These results have showed that Alternanthera paronychioides leaf and stem crude extracts had significant activity against all organisms tested.
Keywords: Alternanthera paronychioides, Phytochemical analysis, Antimicrobial activity, Smooth joy weed
