Antibacterial properties of selected plant ethanolic extract against water-borne bacteria
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Date
2019
Authors
Goldwin Grace V. Reyes
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Abstract
In this study, the antibacterial potentials of the identified Senna alata (Linn.) Roxb Persea americana Mill, Syzigium cumini 9Linn.) Skeels, Eucalyptus tereticornis Sm. and Gliricidia sepium (jacq) Kunth ex Steud leaves and shoots ethanol extracts were evaluated against water borne bacteria namely: Enterobacter cloacae and Exiguobacterium sp. Forty(40) grams of pulverized air-dried plant samples were soaked with 400 ml of 95% ethanol in 72 hours. Extraction and rotary evaporation were done, the ethanolic extracts of the plant samples were subjected to eradicant and protectant test aginst E. cloacae and Exiguobacterium sp. that were isolated from water wage canal. Zone of inhibition and colonization were observed. results showed that in the eradicant test, only ethanolic extracts of E. tereticorns inhibits the growth of E. cloacae. On the other hand, all the ethanolic extracts inhibits the growth of Exiguobacterium sp. after 24 hours of incubation. meanwhile, in the protectant test, all the extract showed to be negative against E. cloacae and Exiguobacterium sp. after 24 hours of incubation. This implies the antibacterial activity of the aforementioned plant samples against water borne bacteria.
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Research Subject Categories::NATURAL SCIENCES::Biology , Research Subject Categories::NATURAL SCIENCES::Biology::Organism biology::Microbiology