Posted by admin on Aug 31, 2016 in |
Background: Widespread use of antibiotics in livestock production in large-scale across the globe has become of public and veterinary health importance because of its implication in antibiotic resistance. Adequate data in this area of research is not readily available in Nigeria; this study was undertaken in view of the possible link between antimicrobial resistance in farm animals and humans. Methods: We collected fifty samples of raw beef from different vendors and slaughter houses within Abuja and screened them for the presence of Listeria monocytogenes and Salmonella typhimurium using standard microbiological methods. The total bacterial and fungal counts, susceptibility of the isolates to different antibiotics and heat sensitivity at 55, 60 and 65ºC for 15 minutes were determined. Results: Our results show that ten isolates of Listeria monocytogenes and eighteen isolates of Salmonella typhimurium were isolated from the samples. The total viable bacteria count range was 1x 109 – 8x 109cfu/g while the fungal count was 1x 103 – 9x 109cfu/g. One (10 %) of the Listeria monocytogenes isolates was...
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Posted by admin on Jul 31, 2016 in |
The main objective of this study is to evaluate the antibacterial activity and phytochemical analysis of Lemon (Citrus limon L.) and Orange (Citrus sinensis L.) Increasing resistance of microorganisms to present day antibiotics arose a way to focus on antimicrobial activity and future prophylactic potential of the lemon and orange peels. In the present study, a total of two extract each of Methanol & Ethanol of Citrus limon and Citrus sinensis were evaluated for their antibacterial activity due to the phytochemicals present in the both the fruit’s peels. All the extracts showed antibacterial activity against all the four bacterial stains. The antibacterial activity of Methanolic and Ethanolic peel extract of C. limon L. and C.sinensis L. were evaluated on bacterial strains Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia and Staphylococcus aureus by recording minimum inhibitory concentration (MIC) by disc diffusion method. Methanolic extract of C. sinensis showed maximum inhibition zone of 17 mm against S....
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Posted by admin on Jul 31, 2016 in |
About 5 extract (hexane, acetone, ethanol, methanol, aqueous extraction) from the flowers of Mangifera indica was extracted. Ethanol extract was characterized by Gas Chromatography-Mass Spectroscopy. Seven constituents from 7 peaks were identified. Icosanedioic acid monomethyl ester, nonadec-16-enyl-benzene, 1, 9 diphenyl nonane, icosane, octadecane, dodecanoic acid butyl ester, tetracosyl- benzene were identified. The antimicrobial activity of different extract was tested against human and plant pathogenic bacteria. Ethanol extract showed significant role on inhibiting almost all tested pathogenic organisms and antitubercular activities at various...
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Posted by admin on Jul 31, 2016 in |
Nigella sativa seed is one of the spices, which is referred by Prophet Mohammed as a herb of blessing, which can cure everything other than death. Therapeutic potential of Nigella sativa seed has been very well studied by many researchers, but its use in cosmetic science is not very well studied. Nigella sativa seed is intensively studied for its chemical composition. It is reported to contains Thymoquinone, Nigellimine-N-oxide, Nigellicine, Nigellidine, Nigellone, Dithymoquinone, Thymohydroquinone, Thymol, Arvacrol, 6-methoxy-coumarin, 7-hydroxy-coumarin, Oxy-coumarin, Alpha-hedrin, Steryl-glucoside, Tannins, Flavinoids, Essential fatty acids, Essential amino acids, Ascorbic acid, Iron and calcium. Presence of these natural actives makes Nigella sativa seed as great medicinal herb. Nigella sativa seed has antimicrobial, antioxidant, anti-aging, hair growth promoter, sun protection, anti cancer activity, which make it a novel ingredient for many cosmetic preparations. This review brings the comprehensive compilation of researches on Nigella sativa seed in the area of cosmetics and related...
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Posted by admin on Jul 31, 2016 in |
Urinary tract infections causing bacteria play an important role in expression and spread of drug resistance among bacteria in the hospitals and in community. Because of rapid increase in antibiotic resistance, alternative antimicrobial agents are needed to be developed and employed to control multi-drug resistant bacteria. The present study focuses on antibacterial activity of Green and Black tea (Camellia sinensis) extracts against the virulent uropathogens. Twelve bacterial isolates from urinary tract infections were studied for their ability to produce virulence phenotypes like hemolysin, biofilms, gelatinases, hydrophobic nature and penicillinases. Antibacterial susceptibility testing was done. Out of the total isolates tested 67% of E.coli and 60% of Klebsiella spp were multi drug resistant Penicillinase production as tested by filter paper iodometric method and biofilm production on Congo red plates were the virulence features exhibited by maximum number of E.coli and Klebsiella Spp. Among the aqueous, methanol and ethanol extracts tested for antibacterial activity, methanol extracts showed maximum dimeter of zone of inhibition. Minimum inhibitory concentration for ethanol and aqueous extracts was 0.8mg /ml whereas that for...
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