scholarly journals Antimicrobial activities of blinding tree, Excoecaria agallocha against selected bacterial pathogens

2014 ◽  
Vol 6 (2) ◽  
pp. 29-36 ◽  
Author(s):  
A. A Laith, ◽  
M Najiah,
Keyword(s):  
Bacterial Pathogens ◽  
Antimicrobial Activities ◽  
Excoecaria Agallocha

scholarly journals Antimicrobial activities of three seaweeds extract against some human viral and bacterial pathogens

BIOCELL ◽  
2022 ◽  
Vol 46 (1) ◽  
pp. 247-261
Author(s):  
JELAN MOFEED ◽  
MOHAMED DEYAB ◽  
ABDELNASER MOHAMED ◽  
MAHMOUD MOUSTAFA ◽  
SALLY NEGM ◽  
...  
Keyword(s):  
Bacterial Pathogens ◽  
Antimicrobial Activities

scholarly journals Antimicrobial activities of thiazole, imidazolidine, tetrahydropyrimidine derivatives and silver/polyvinyl alcohol nanocomposites against selected zoonotic fish bacterial pathogens

2017 ◽  
Vol 64 (3) ◽  
Author(s):  
B. Ghasemi ◽  
H. Beyzaei ◽  
S. H. Hashemi ◽  
M. Ghaffari-Moghadam ◽  
M. Mirzaei
Keyword(s):  
Polyvinyl Alcohol ◽  
Antibacterial Agents ◽  
Inhibitory Concentration ◽  
Bacterial Pathogens ◽  
Inhibition Zone ◽  
Antimicrobial Activities ◽  
Edwardsiella Tarda ◽  
Streptococcus Iniae ◽  
Inhibitory Effects ◽  
Thiazole Derivatives

One of the serious problems faced by health and food security is the spread of drug-resistant zoonotic aquatic bacterial pathogens. For this reason, identification and application of new antibacterial agents are required. In this study, inhibitory effects of thiazole, imidazolidine and tetrahydropyrimidine derivatives and silver/polyvinyl alcohol (Ag/PVA) nanocomposites were evaluated against three important zoonotic fish bacterial pathogens namely Streptococcus iniae, Edwardsiella tarda and Aeromonas hydrophila. Ag/PVA nanocomposite was found to inhibit growth of all tested bacteria, the highest activity was observed against S. iniae with minimum inhibitory concentration (MIC) of 256 μg ml-1 and inhibition zone diameter (IZD) of 10.2 mm. No inhibitory effects were observed with imidazolidines10a-c, tetrahydropyrimidines 10d-e and thiazoles 6a-c. Among heterocyclic compounds, only thiazole derivatives 6d and 8 had inhibitory effects onS. iniae and E. tarda with MIC values of 32-256 μg ml-1 but lacked antibacterial activity against A. hydrophila.

scholarly journals Antimicrobial Activity of Selected Medicinal Plants from a Sub-Saharan African Country Against Bacterial Pathogens from Post-Operative Wound Infections

2021 ◽  
Vol 9 (2) ◽  
pp. 23
Author(s):  
Enid Owusu ◽  
Martin Mensah Ahorlu ◽  
Emmanuel Afutu ◽  
Amos Akumwena ◽  
George Awuku Asare
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Traditional Medicine ◽  
Chronic Wounds ◽  
Bacterial Pathogens ◽  
Antimicrobial Activities ◽  
Aureus Strain ◽  
Diffusion Method ◽  
Phytochemical Analysis

Background: Globally, the application of medicinal plants in the management of acute and chronic wounds can be considered a common occurrence in most traditional medicine practices. In view of this, many plants in the tropical and subtropical regions have been screened for their wound-healing activities. Consequently, plants having antimicrobial activity against multidrug-resistant (MD-R) pathogens can be considered great assets. Therefore, this study evaluated ethanolic and aqueous extracts of five medicinal plants (Psidium guajava, Myrianthus arboreus, Alchornea cordifolia, Momordica charantia, and Justicia flava) for their antimicrobial activities against MD-R bacterial pathogens isolated from post-operative wounds; Methods: This involved the aqueous and ethanolic extraction of the selected medicinal plants. Preliminary phytochemical constituents of the plants were examined. The agar well diffusion method was then used to determine the antibacterial activity of the leaves against reference strains (Escherichia coli ATCC 25922, Salmonella typhi ATCC 19430, Pseudomonas aeruginosa ATCC 27853 and Staphylococcus aureus ATCC 25923, and a Methicillin-Resistant Staphylococcus aureus strain) as well as the MDR clinical isolates (E. coli, P. aeruginosa, S. aureus and CoNS) from the wounds; Results: The preliminary phytochemical analysis of the leaves showed the presence of saponins, phenolics, and reducing sugars in almost all the plants tested. All plant extracts were observed to have some antimicrobial activity against at least one reference strain. For the clinical MDR isolates, A. cordifolia from this study showed highest inhibition to growth of all bacteria used. Activity of J. flava against S. aureus was highest as compared to that of E.coli and P. aeruginosa. Similar observation was made for M. arboreus, P. guajava and M. charantia where the highest activity was observed against S. aureus; Conclusion: This study has mainly shown that P. guajava, M. arboreus, A. cordifolia, M. charantia, and J. flava exhibits antimicrobial activities against MD-R bacterial pathogens isolated from post-operative wounds. Also, these plants has bioactive phytochemical compounds with potential medicinal values for the treatment of numerous infections. Therefore, these plants may be helpful in the management of acute and chronic wounds, especially in traditional medicine practices.

scholarly journals Human-derived probiotic Lactobacillus reuteri demonstrate antimicrobial activities targeting diverse enteric bacterial pathogens

Anaerobe ◽  
2008 ◽  
Vol 14 (3) ◽  
pp. 166-171 ◽  
Author(s):  
Jennifer K. Spinler ◽  
Malai Taweechotipatr ◽  
Cheryl L. Rognerud ◽  
Ching N. Ou ◽  
Somying Tumwasorn ◽  
...  
Keyword(s):  
Lactobacillus Reuteri ◽  
Bacterial Pathogens ◽  
Antimicrobial Activities ◽  
Probiotic Lactobacillus

scholarly journals First ever report on the antimicrobial activities of some selected mangrove halophytes of Sundarban against milk spoilage microflora

2017 ◽  
Vol 4 (8) ◽  
pp. 273-292
Author(s):  
Abhishek Mukherjee ◽  
Subhajit Das ◽  
Sabyasachi Chakraborty ◽  
Anwesa De ◽  
Tarun Kumar De
Keyword(s):  
Statistical Significance ◽  
Avicennia Marina ◽  
Antimicrobial Activities ◽  
Inhibitory Effect ◽  
Data Sets ◽  
Leaf Extracts ◽  
Excoecaria Agallocha ◽  
Acanthus Ilicifolius ◽  
Level Of Significance ◽  
Spoilage Microflora

The study was governed by the objective of investigating the antimicrobial effects of mangrove leaf extracts. The fresh and dried leaf extracts from Avicennia marina (Forssk.) Vierh., Avicennia officinalis L., Aegiceras corniculatum (L.) Blanco, Aegialitis rotundifolia Roxb., Acanthus ilicifolius L, Lumnitzera racemosa Willd., Excoecaria agallocha L. and Sonneratia apetala Buch-Ham. were found to have inhibitory effects on the milk spoilage microflora obtained from curd sample. Methanol and Acetone were used as extraction solvents and in comparison, extracts by acetone were observed to suppress the microbial growth to lesser extents. Leaf extracts of A. marina, A. officinalis L. racemosa and A. rotundifolia were able to exert relatively greater inhibitory effect on the milk spoilage microbial broth than others, although all the species expressed some degree of suppression. Interestingly A. rotundifolia, S. apetala, L. racemosa and E. agallocha demonstrated greater efficiency in formation of larger growth inhibition zones on the petri plates. The extracts obtained from dry leaves produced greater adverse effects of the microbes than the raw leaf extracts. The data generated were analyzed with the help of 'ANOVA: Single factor' and 'F-test: Two sample for variance' and data sets were of statistical significance at 0.05 level of significance as null hypothesis was rejected.

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