Please use this identifier to cite or link to this item: https://doi.org/10.2174/1570180811310050011
Title: Purification and biological evaluation of some bioactive metabolomics as antimicrobial agent
Authors: Samy, R.P. 
Sethi, G.
Chow, V.T.K.
Keywords: Antibacterial activity
Cassia fistula
Compounds
Cytotoxicity
Human cells
Konraikki
Issue Date: Jun-2013
Citation: Samy, R.P., Sethi, G., Chow, V.T.K. (2013-06). Purification and biological evaluation of some bioactive metabolomics as antimicrobial agent. Letters in Drug Design and Discovery 10 (5) : 437-443. ScholarBank@NUS Repository. https://doi.org/10.2174/1570180811310050011
Abstract: In vitro activities of methanol and water (crude) extracts of leaves, barks and seeds from Cassia fistula were tested against Gram-positive and Gram-negative bacteria by using disc-diffusion method at 6.25-100 ìg/ìl. Of which water extracts of leaf showed powerful antibacterial action against Proteus vulgaris and Staphylococcus aureus than others. Six (6) purified compounds from the most active leaves displayed higher antibacterial activity than the compound (2) and (4) against P. vulgaris and S. aureus. In vitro toxicological properties were evaluated by MTT assay to test the reduction of viability of human lung (MRC-5), skin (HEPK) fibroblasts and human macrophage (U-937) cells with the C. fistula water-leaf extracts and compounds (6) at 62.5 - 2000 ìg/ml doses. The water-leaf extracts -showed less cytotoxic activity on MRC-5 cells than the U-937 and HEPK cells. However, the compound (6) was not toxic to all the human cells up to 1000 ìg/ml doses. In conclusion, the significant antibacterial activity may be due to the compound flavonoids and the toxicity results proved the traditional usage of this plant for bacterial therapy. © 2013 Bentham Science Publishers.
Source Title: Letters in Drug Design and Discovery
URI: http://scholarbank.nus.edu.sg/handle/10635/97656
ISSN: 15701808
DOI: 10.2174/1570180811310050011
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