•Journal•ISSN: 1119-5096
African Journal of Biomedical Research
African Journals OnLine
About: African Journal of Biomedical Research is an academic journal published by African Journals OnLine. The journal publishes majorly in the area(s): Population & Health care. It has an ISSN identifier of 1119-5096. It is also open access. Over the lifetime, 779 publications have been published receiving 9070 citations.
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TL;DR: Amongst the plant species screened, methanol extract of Bauhinia variegata bark showed best antibacterial activity, and S. typhimurium was the most resistant bacteria while B. cereus was themost susceptible bacteria.
Abstract: The aqueous and methanol extracts of 12 plants each belonging to different families were evaluated for antibacterial activity against medically important bacteria viz. B. cereus ATCC11778 , S. epidermidids ATCC12228 , E. aerogenes ATCC13048, P. vulgaris NCTC 8313, S. typhimurium ATCC 23564. The in vitro antibacterial activity was performed by agar disc diffusion and agar well diffusion method. The aqueous extracts were inactive but methanol extracts showed some degree of antibacterial activity against the tested bacterial strains. S. typhimurium was the most resistant bacteria while B. cereus was the most susceptible bacteria. Amongst the plant species screened, methanol extract of Bauhinia variegata bark showed best antibacterial activity. (Afr. J. Biomed. Res. 10: 175 – 181)
345 citations
TL;DR: The aqueous and ethanolic extracts of Launaea procumbens Roxb, Vitis vinifera L. and Cyperus rotundus L. were evaluated for antimicrobial activity against clinically important bacteria and Salmonella typhimurium was the most resistant bacterial strain against all the extracts.
Abstract: The aqueous and ethanolic extracts of Launaea procumbens Roxb (Labiateae), Vitis vinifera L (Vitaceae) and Cyperus rotundus L (Cyperaceae) were evaluated for antimicrobial activity against clinically important bacteria viz Alcaligenes faecalis ATCC8750, Bacillus cereus ATCC11778, Bacillus subtilis ATCC6633, Enterobacter aerogenes ATCC13048, Escherichia coli ATCC25922, Klebsiella pneumoniae NCIM2719, Proteus mirabilis NCIM224, Proteus vulgaris NCTC8313, Pseudomonas aeruginosa ATCC27853, Pseudomonas pseudoalcaligenes ATCC17440, Salmonella typhimurium ATCC23564, Staphylococcus aureus ATCC25923, Staphylococcus epidermidis ATCC12228, Staphylococcus subfava NCIM2704 and Candida tropicalis ATCC4563 The in vitro antimicrobial activity was performed by agar disc diffusion and agar well diffusion method The ethanolic extracts of all the plants were active against all the investigated bacterial strains while all the aqueous extracts were inactive except for Vitis vinifera L S typhimurium was the most resistant bacterial strain against all the extracts (Afr J Biomed Res 9:89 – 93, May 2006) Keywords: antimicrobial activity, aqueous extract, ethanolic extract, Launaea procumbens Roxb, Vitis vinifera L and Cyperus rotundus L
252 citations
TL;DR: The antibacterial activity of defatted extracts of Bauhinia variegata L. was more than those without defatting and maximum activity was observed at highest concentration i.e. 10mg/ml.
Abstract: Bauhinia variegata L. bark powder was defatted with petroleum ether. The non-defatted plant material as well as the defatted plant material was then individually extracted in different solvents with increasing polarity viz. 1,4-dioxan, acetone, methanol, dimethylformamide (DMF) and distilled water respectively. The extractive value of B. variegata L. for non-defatted extracts ranged from (0.7-13%) and for defatted extracts the extractive value ranged from (1-10.5%). The antibacterial activity of all the extracts (non-defatted and defatted) of Bauhinia variegata L. bark was determined by agar well diffusion method at three different concentrations i.e., 10 mg/ml, 5 mg/ml and 2.5 mg/ml. The antibacterial activity of defatted extracts of Bauhinia variegata L. was more than those without defatting. Maximum activity was observed at highest concentration i.e. 10mg/ml. Defatted acetone and methanol extracts of Bauhinia variegata L. were most active as compared to other extracts against all the studied organisms. Petroleum ether extracts of Bauhinia variegata L. was inactive against all microorganism (Afr. J. Biomed. Res. 9: 53 – 56, 2006) Keywords: Antibacterial activity, Bauhinia variegata L. non-deffated extracts, defatted extracts.
148 citations
TL;DR: As part of a screening program for biologically active compounds in plants, twenty two medicinal plants were extracted and screened for anti-oxidant activity using the 2, 2,diphenyl-picryl-hydrazyl radical.
Abstract: As part of a screening program for biologically active compounds in plants, twenty two medicinal plants were extracted and screened for anti-oxidant activity using the 2, 2,diphenyl-picryl-hydrazyl radical.
141 citations
TL;DR: Higher concentrations of zinc than recommended by the Federal Environmental Protection Agency were recorded in the fish during the dry season and Iron was the dominant metal in the muscle while Chromium was the least.
Abstract: Adult Clarias gariepinus (African Catfish) were purchased from Eleiyele Lake and Zartech fish farm in Ibadan. Water samples were also collected in February (dry season) and June (rainy season), 2002. Gill, bone, intestine, muscle and water samples were analyzed for five metals: manganese, copper, zinc, iron, and chromium by atomic absorption spectroscopy (AAS) in two separate experiments. In each case, two tissues were compared with the levels of the metals in water viz: Gill, bone, and water; intestine, muscle and water. Generally, lower concentrations of the metals were recorded in water than fish tissues. Higher concentrations of zinc than recommended by the Federal Environmental Protection Agency were recorded in the fish during the dry season. Iron was the dominant metal in the muscle while Chromium was the least. Significant differences (p
137 citations