A study of antibacterial activity of plant extracts on bacterial pathogens isolated from Eye infections (conjunctivitis)

10.5580/2950 ◽  
2007 ◽  
Vol 4 (1) ◽  
Keyword(s):  
Antibacterial Activity ◽  
Plant Extracts ◽  
Bacterial Pathogens ◽  
Eye Infections

scholarly journals Antibiotic sensitivity and in vitro antimicrobial activity of plant extracts to pseudomonas fluorescens isolates collected from diseased fish

1970 ◽  
Vol 1 (4) ◽  
pp. 82-88 ◽  
Author(s):  
MJ Foysal ◽  
MM Rahman ◽  
M Alam
Keyword(s):  
Antibacterial Activity ◽  
Pseudomonas Fluorescens ◽  
Plant Extracts ◽  
Antibiotic Sensitivity ◽  
Diffusion Method ◽  
Biochemical Tests ◽  
Leaf Extracts ◽  
Sensitivity Pattern ◽  
Medicinal Plant Extracts

Studies were conducted to identify Pseudomonas fluorescens isolates from a collection of bacteria isolated from bacterial haemorrhagic septicaemia infected carp and catfish, evaluate their antibiotic sensitivity pattern and screen the antibacterial activity of some medicinal plant extracts against the isolates.. A total of 10 isolates were identified as P. fluorescens by morphological, physiological and biochemical tests. In vitro antibiotic sensitivity test of the P. fluorescens isolates were conducted by disc diffusion method for seven antibiotics where, all of the isolates were found to be sensitive only against streptomycin and gentamycin but, most of the isolates (80%) were found resistant to chloramphenicol (C). Moreover, eighty percent of the isolates showed resistance to multiple antibiotics. A total of 118 plant extracts were screened for their antibacterial activity against the P. fluorescens isolates where the isolates exhibited sensitivity to 30 samples. Leaf extracts of Tamarindus indicus, Terminalia chebula, Citrus aurantifolia, Eugenia caryophyllata and Spondias pinnata were found to inhibit the growth of all of the P. fluorescens isolates. DOI: http://dx.doi.org/10.3329/ijns.v1i4.9733 IJNS 2011 1(4): 82-88

scholarly journals In VitroAntibacterial Potential of Extracts ofSterculia africana,Acacia sieberiana, andCassia abbreviatassp.abbreviataUsed by Yellow Baboons(Papio cynocephalus)for Possible Self-Medication in Mikumi National Park, Tanzania

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
Irene Kirabo ◽  
Faith P. Mabiki ◽  
Robinson H. Mdegela ◽  
Christopher J. D. Obbo
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Plant Extracts ◽  
National Park ◽  
Nonhuman Primates ◽  
Diffusion Method ◽  
Root Bark ◽  
Self Medication ◽  
Gram Positive ◽  
Acacia Sieberiana

In the animals in general and nonhuman primates in particular self-medication has been widely reported; however, little is still known about the pharmacological activity of the extracts present in their daily diet. Thein vitroantibacterial activity of the stem, root bark, and leaf extracts of three selected plants on which yellow baboons feed in an unusual manner in Mikumi National Park, Tanzania, was evaluated. Crude plant extracts were tested against Gram positive and Gram negative bacteria of medical and veterinary importance employing a modified agar well diffusion method and Minimum Inhibitory Concentration (MIC) technique. The lowest MIC value for Gram positive strains was 0.31 mg/ml demonstrated byCassia abbreviatassp.abbreviataagainstStaphylococcus aureus(ATCC 25923). The highest susceptibility to the ethanol plant extracts was exhibited byPseudomonas aeruginosa,Escherichia coli,andStaphylococcus aureus,examples of microbes that affect both human and nonhuman primates. These findings demonstrate that the plant extracts fromSterculia africana,Acacia sieberiana,andCassia abbreviatassp.abbreviatahave antibacterial activity and may be used as feed for their prophylactic benefits. Remarkably, the lowest MIC of 0.16 mg/ml was only 16-fold weaker than Gentamicin, a standard drug.

scholarly journals Antagonistic activity of terrestrial Streptomyces sp. VITNK9 against Gram negative bacterial pathogens affecting the fish and shellfish in aquaculture

2018 ◽  
Vol 53 (2) ◽  
pp. 171 ◽  
Author(s):  
Mohammed Ishaque Nabila ◽  
Krishnan Kannabiran
Keyword(s):  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Vibrio Harveyi ◽  
Bacterial Pathogens ◽  
Vibrio Anguillarum ◽  
Antagonistic Activity ◽  
Edwardsiella Tarda ◽  
Streptomyces Sp ◽  
Aeromonas Caviae ◽  
Fish And Shellfish

A total of 72 morphologically different actinomycetes isolates were isolated from samples collected at different regions of Vellore, Tamil Nadu, India and screened for its antibacterial activity against fish and shellfish pathogens. All actinomycetes isolates were screened for antibacterial activity by cross streak method against the selected fish and shellfish bacterial pathogens including Aeromonas caviae, Aeromonas hydroplila, Edwardsiella tarda, Vibrio anguillarum and Vibrio harveyi. Secondary screening of antagonistic isolates by well diffusion method leads to the identification of potential isolate. Culture conditions for the potential isolate were optimized for maximal growth and yield of the ethyl acetate (EA) crude extract. The potential isolate was characterized by molecular taxonomy and phylogeny and identified as Streptomyces species and named as Streptomyces sp. VITNK9. The 16S rDNA nucleotide sequence was searched through the GenBank database and showed 83% similarity to Streptomyces vinaceusdrappus. The EA extract prepared from Streptomyces sp. VITNK9 showed moderate antagonistic activity accessed by the formation of zone of growth inhibition against, Aeromonas caviae (15.33 mm), Aeromonas hydrophila (17.66 mm), Edwardsiella tarda (18.33 mm), Vibrio anguillarum (14.33 mm) and Vibrio harveyi (14.33 mm). The MIC value of EA extract was ranged between 0.03-0.125 mg mL-1. The GC-MS spectrum of the ethyl acetate extract revealed the presence of two major compounds, pyrrolo [1,2-A] pyrazine-1,4-Dione (56.67%) and Hexahydro-3-(2-Methylpropyl) (27.91%), respectively. The results of the study suggest that Streptomyces sp. VITNK9 is a potential source for antagonistic secondary metabolites against fish and shellfish bacterial pathogens.

scholarly journals Antibacterial activity of eight Iranian plant extracts against methicillin and cefixime restistant Staphylococcous aureus strains

2010 ◽  
Vol 3 (4) ◽  
pp. 262-265 ◽  
Author(s):  
Morteza Shojaei Moghadam ◽  
Susan Maleki ◽  
Esmaeil Darabpour ◽  
Hossein Motamedi ◽  
Seyyed Mansour Seyyed Nejad
Keyword(s):  
Antibacterial Activity ◽  
Plant Extracts
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