Antibacterial activity of some salt marsh halophytes and mangrove plants against methicillin resistant Staphylococcus aureus
01 Jan 2009-World Journal of Microbiology & Biotechnology (Springer Netherlands)-Vol. 25, Iss: 1, pp 155-160
TL;DR: The antibacterial activity of aqueous and methanol extracts of leaves/shoots of five salt marsh halophytes and six mangroves was studied against methicillin resistant, clinical isolates of Staphylococcus aureus and further separation of active principle from the potent mangrove plant will be useful for the control of drug resistant strains.
Abstract: The antibacterial activity of aqueous and methanol extracts of leaves/shoots of five salt marsh halophytes and six mangroves was studied against methicillin resistant, clinical isolates of Staphylococcus aureus. There was a clear comparability between the salt marsh halophytes and mangroves in their antibacterial action. The mangrove plants possessed higher antibacterial potency than the salt marsh halophytes. The highest activity was recorded with the methanol extract of Excoecaria agallocha followed by the methanol extracts of Aegiceras corniculatum, Lumnitzera racemosa and Ceriops decandra. The minimum inhibitory concentration (MIC) values ranged from 0.125 to 4 mg/mL and 1 to 16 mg/mL for methanol and aqueous extracts, respectively. Further separation of active principle from the potent mangrove plant will be useful for the control of drug resistant strains of S. aureus.
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01 Jan 2012
TL;DR: All the species documented in this study being used for treating number of diseases like, flatulence, epilepsy, small pox, asthma, diabetes, rheumatism, stomach pains, fevers, malaria, cholera, hepatitis etc.
Abstract: Mangroves are world’s most productive ecosystems and support genetically diverse community of terrestrial and aquatic flora and fauna. They provide innumerable direct and indirect benefits to human beings. The ethnobotanical informations of true mangroves and mangrove associates were collected from the surrounding villages of mangrove forest of Pitchavaram, Tamil Nadu. The medicinal uses of twelve species of true mangroves and six species of mangrove associates were recorded from the present study. All the species documented in this study being used for treating number of diseases like, flatulence; epilepsy, small pox, asthma, diabetes, rheumatism, stomach pains, fevers, malaria, cholera. hepatitis etc. The collected informations were discussed with previous authentic report on antimicrobial activities of mangroves.
16 citations
Journal Article•
TL;DR: There are metabolites in S. alba that have the potential to serve as antioxidant and antibacterial compounds that may serve as a lead to the development of new pharmaceuticals.
Abstract: A study was carried out to investigate the antioxidant potential and antibacterial activities of ethanol, methanol and chloroform extracts from soil grown and tissue culture explants of the mangrove plant Sonneratia alba, as well as its ethyl acetate and water extracted fractions. Antioxidant effects were determined by DPPH and SOD assays while antibacterial activities were determined using the agar disk diffusion method. LC-MS/MS analysis was also conducted in an attempt to identify active compounds in the extracts and fractions. The results showed that both the methanol and ethanol extracts of leaf and bark exhibited potentially good antioxidant and antibacterial activities compared to the chloroform extracts. There was a positive correlation between the total phenolic content and the antioxidant effects of the ethanol and methanol extracts of leaf and bark (R = 0.72). Among the crude extracts, the ethanol extract of bark exhibited the best antioxidant and antibacterial activities. Chloroform extracts of both leaf and bark samples exhibited lower antioxidant and antibacterial activities. On the other hand, water extracted fraction showed better antioxidant activity compared to ethyl acetate extracted fraction. All the extracts showed good antioxidant activity with IC50 values ranging between 0.019-0.37 mg mL . LC-MS/MS analysis revealed 8 peaks at m/z values of 331, 345, 452, 463, 473, 480 and 494 with fragmentation patterns corresponding to the high antioxidant activity of the water extracted fraction. This study has shown that there are metabolites in S. alba that have the potential to serve as antioxidant and antibacterial compounds that may serve as a lead to the development of new pharmaceuticals. © 2014 Friends Science Publishers
13 citations
Cites background from "Antibacterial activity of some salt..."
..., 2006), methanol extract of Excoecaria agallocha leaves and shoots (Chandrasekaran et al., 2009) and antifungal activity of methanol extract of Exoecaria agallocha and Bruguiera gymnorrhiza trunks (Kazuhiko, 2002) are some examples of pharmaceutical potential of mangrove plants....
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...…of ethyl acetate extract of Avicennia marina mature leaves (Abeysinghe et al., 2006), methanol extract of Excoecaria agallocha leaves and shoots (Chandrasekaran et al., 2009) and antifungal activity of methanol extract of Exoecaria agallocha and Bruguiera gymnorrhiza trunks (Kazuhiko, 2002) are…...
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19 Sep 2015
TL;DR: In this article, the authors used Mangrove products as coloring and antioxidant agents in the cosmetic, pharmaceutical, and food industry, and showed that using these products might help in preserving Mangroves from depredation and sustainable exploitation.
Abstract: Mangrove populations were selected in Multiple Use Natural Reserve of Monterrico, Guatemala, for the chemical characterization and biological evaluation of leaves, roots and bark. Ethanol extract were prepared and secondary metabolites identified by macro and semi-micro tests. The antioxidant activity was determined by ABTS and DPPH tests and antibacterial activity by a microdilution test. The best extraction yields of leaves was obtained with ethanol (43%), most common secondary metabolites were identified as flavonoids and tannins. Leaf samples demonstrated the greatest number of flavonoids expressed as chlorogenic acid; in the bark and roots, the most common secondary metabolites were tannins. Ethanol extracts of root and leaf showed the highest antioxidant activity by DPPH and ABTS tests (IC50 0.21 and 0.15 mg/mL, respectively). The extracts showed moderate antibacterial activity against Escherichia coli and Salmonella typhi at 1 mg/ml. The tests showed a possible cosmetics use as coloring extracts; it can be used at concentrations of 1, 3 and 5%, which had coloration from yellow to orange as possible substitutes for artificial yellow dyes such as No. 5 and 6. Tinctures showed good stability a different pH (3, 4, 5 and 7), especially leaves tinctures at pH 5 such as Red No. 40. Phytochemical analysis showed the presence of various metabolites of therapeutic and cosmetic significance. This paper demonstrates that Mangrove products could be used as coloring and antioxidant agents in the cosmetic, pharmaceutical and food industry. Utilization of these products might help in preserving Mangrove from depredation and sustainable exploitation in ecological reserve areas.
12 citations
11 citations
TL;DR: This review will guide through the constitution of bioactive compounds, in these two mangrove species, and the treatment possibilities over certain diseases.
11 citations
References
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TL;DR: Recommendations of the National Committee for Clinical Laboratory Standards continue to be based on this publication; the “Kirby-Bauer” method is, among the many disk methods used in other countries, still the one that has been researched most thoroughly and updated continuously.
Abstract: In the words of the authors, the paper by A. W. Bauer et al., from the University of Washington in Seattle, on a standardized single-disk method for antibiotic susceptibility testing “. . . consolidate(s) and update(s) previous descriptions of the method and provide(s) a concise outline for its performance and interpretation.” Clinical microbiologists were relieved that finally a disk diffusion method had been standardized, could be used with ease, and provided reliable results as compared with minimum inhibitory concentration tests. The pivotal role of Hans Ericsson’s theoretical and practical studies (H. Ericsson and G. Svartz-Malmberg, Antibiot. Chemother. 6:41–74, 1959), as well as earlier reports by some of the authors of the publications cited, must be mentioned as a matter of fairness. Most of the recommendations given are still valid today even though some of the antimicrobial agents are obsolete, new ones have been added, some zone sizes had to be modified, and new media were designed for Haemophilus influenzae and Neisseria gonorrhoeae. Recommendations of the National Committee for Clinical Laboratory Standards continue to be based on this publication; the “Kirby-Bauer” method is, among the many disk methods used in other countries, still the one that has been researched most thoroughly and updated continuously. ALEXANDER VON GRAEVENITZ
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