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Advanced Journal of Microbiology Research

65 Articles | Volume 12 (2013)
Review
Etinosa O. Igbinosa and Anthony I. Okoh*
Abstract: Toxigenic strains of Vibrio cholerae belonging to the O1 and O139 serogroups cause cholera, a severe diarrhoeal disease that occurs frequently as epidemics in many developing countries. Although V. cholerae is known to be a human pathogen, the bacteria constitute part of the normal aquatic flora in the ecosystem, which includes both epidemic and non epidemic strains that vary in their virulence gene profile. V. cholerae O1 and O139 strains are commonly known to carry a set of virulence genes necessary for pathogenesis in human. The major virulence factors of V. cholerae include cholera toxin (CT), which is responsible for the profuse watery diarrhoea and a pilus colonization factor known as toxin coregulated pilus (TCP). The presence of virulence-associated genes in the environmental strains provides interesting possibility to understand the pathogenicity of the disease. The emergence of toxigenic V. cholerae strains has provided an opportunity to study the coevolution of different serogroups of epidemic V. cholerae strains, apparently driven by competition for survival and thereby attaining enhanced fitness. This review attempts to bring together some of the important researches in recent times that have contributed towards understanding the genetic, epidemiology and evolution of toxigenic V. cholerae.[...] Read More.
Keywords: Vibrio cholerae O1 and O139, wastewater, virulence-associated factors, environmental strains, mediating gene transfer.
  2013, 12(1), 1-6; 
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Research Article
Amitava Rakshit and Pratapbhanu S. Bhadoria
  2013, 12(1), 1-6; 
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Views:529
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Research Article
P. Lotrakul, P. Deenarn, S. Prasongsuk and H. Punnapayak*
Abstract: Ten Aureobasidium isolates were collected from bathroom surfaces in Thailand. They were identified as Aureobasidium pullulans. Cell extracts from all isolates were tested for antifungal activities against four selected Aspergillus species using a paper disc diffusion and conidial germination inhibition assay. BM1, KT1, HKW1 and HKW2 extracts inhibited Aspergillus terreus, whereas KT1 and BM1 extracts also inhibited Aspergillus fumigatus. BM1 extract alone inhibited Aspergillus flavus. From TLC analysis, an antifungal compound with an identical Rf to that of aureobasidin A was found in all extracts. Antifungal tests of TLC-separated compounds supported the paper disc diffusion and conidial germination inhibition assays.[...] Read More.
Keywords: Aureobasidium pullulans, antifungal activity, aureobasidin.
  2013, 12(1), 1-6; 
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Research Article
K. A. Yongabi *, W. F. Mbacham , K. K. Nubia and R. M. Singh
  2013, 12(1), 1-6; 
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Research Article
B. Saritha Kumari, M. Raghu Ram* and K. V. Mallaiah
  2013, 12(1), 1-6; 
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Views:566
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Research Article
Charu Gupta *, Amar P. Garg , Ramesh C. Uniyal and Archana Kumari
  2013, 12(1), 1-6; 
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Views:523
Download:828
Research Article
W. M. Ahmed and Kawther S. Zaher *
  2013, 12(1), 1-6; 
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Views:540
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Research Article
N.S. Abu Hujier* and F.A. Sharif
  2013, 12(1), 1-6; 
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Views:497
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Research Article
Belkherroubi-Sari L , Boucherit Z , Chéron M , Boucherit K , Benyoucef M and Belbraouet S
  2013, 12(1), 1-6; 
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Views:511
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Research Article
Dada, A.C
  2013, 12(1), 1-6; 
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Views:532
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Research Article
Olusola Abayomi Ojo * and Benjamin A. Oso
  2013, 12(1), 1-6; 
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Views:516
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Research Article
Adenike A. O. Ogunshe and Kehinde O. Olasugba
  2013, 12(1), 1-6; 
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Views:501
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Research Article
Raj K. Salar* and Suchitra
  2013, 12(1), 1-6; 
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Views:531
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Research Article
Kannan P. , Ramadevi S.R. and Waheeta Hopper*
  2013, 12(1), 1-6; 
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Views:528
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Research Article
Oyeleke, S. B.* and Jibrin, N. M.
  2013, 12(1), 1-6; 
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Views:504
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Research Article
Tiby Guissou
Abstract: A pot experiment was carried out in a nursery to determine the influence of an arbuscular mycorrhizal (AM) fungus on plant growth and nutrient uptake in tamarind (Tamarindus indica) and jujube (Ziziphus mauritiana), both of which are multipurpose fruit trees in Sahelian agroforestry systems. Plants were inoculated or not with Glomus aggregatum and grown for four months in a sterilized phosphorus (P)-deficient sandy soil (2.18 ppm P) . Tamarind and jujube seedlings grew very poorly in the absence of G. aggregatum, whereas inoculated ones had greater shoot height and total biomass production. The total dry weight of the fruit tree species was increased 3 and 4 fold by G. aggregatum, respectively, in tamarind and jujube compared to the controls. Jujube with the highest AM root colonization had a higher P concentration (8.33 fold) in shoots than in tamarind (1.62 fold), indicating greater mycorrhizal dependency in jujube seedlings. The P concentration in shoots of AM plants contributed probably to enhance significantly plant growth and development more than N, K and Mg, particularly in jujube seedlings. Results suggested that fruit trees inoculated with AM fungi absorbed nutrients more efficiently from the soil, which resulted in improved plant growth and biomass production. These beneficial effects of AM inoculation may be useful for the production of these fruit trees in fields. Further investigations are therefore necessary to elucidate the effectiveness and competitiveness of G. aggregatum in real nursery conditions.[...] Read More.
Keywords: Arbuscular mycorrhizal fungi, fruit tree, mycorrhizal root colonization, mycorrhizal dependency, nutrient uptake.
  2013, 12(1), 1-6; 
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Short Communication
Kawther S. A. Zaher
  2013, 12(1), 1-6; 
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Views:555
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Research Article
Rowaida K. Khali
  2013, 12(1), 1-6; 
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Short Communication
Differentiation of parasitic and saprophytic leptospirae by oxidase test – A hasty modus operandi
Abstract: The use of the cytochrome oxidase test reagent, as a differential agent to study the pathogenic and saprophytic leptospires was studied. Growth of the leptospiral strains of the saprophytic group was almost involved in the conversion of colorless tetramethyl p-phenelene diamine dihydrochloride solution to dark brown color whereas pathogenic leptospirae strains showed reddish brown color. Saprophytic strains required 20-35 min for oxidation of cytochrome, however, pathogenic strains required more time, about 45 min for cytocrome oxidation. By this preliminary investigation, it is now possible to differentiate and report the saprophytic and parasitic strains based on the differential observation of the cytochrome oxidase test.[...] Read More.
Keywords: Pathogenic, leptopsiral strains, saprophytic strain, 1% oxidase reagent, rapid detection.
  2013, 12(1), 1-6; 
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Research Article
Qasem A. Jafar *, Al-Zinki Sameer , Al-Mouqati Salwa , Al-Amad Samee , Al-Marzouk Ahmed and Al -Sharifi Faisal
  2013, 12(1), 1-6; 
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Review
Multidrug resistance in Pseudomonas aeruginosa: Insights into the molecular mechanisms
Abstract: Pseudomonas aeruginosa is commonly found in chronic lung infections such as cystic fibrosis and others. Intrinsic antibiotic resistance of P. aeruginosa accompanied by its ability to acquire resistance via mutations and adapt to the heterogeneous and dynamic environment of chronically infected lungs are major threats and reasons for the ultimate failure of the current antibiotic therapies in eradicating the infection from lungs. New insights at molecular levels in the process of accumulating such beneficial mutations at faster rates, termed as hypermutation have allowed us to understand the high acquired resistance of this opportunistic pathogen. Also, these understandings will allow us to develop new therapeutic strategies to combat chronic infections.[...] Read More.
Keywords: Pseudomonas aeruginosa, chronic lung infections, multi drug resistance, hypermutation.
  2013, 12(1), 1-6; 
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Views:493
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Research Article
Junaid S. A. *, Abubakar A. , Ofodile A. C. , Olabode A. O. , Echeonwu G. O. N. , Okwori A. E. J. and Adetunji J. A.
  2013, 12(1), 1-6; 
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Research Article
Oyeleke, S. B.
Abstract: 30 samples (male and female) of ear swab were collected from patients at general hospital Minna for examination of bacteria that causes otitis media. 26 samples were positive for these organisms. The organisms isolated include Pseudomonas sp., Kleblesella sp., Proteus sp., Escherichia coli and Staphylococcus aureus. Pseudomonas sp., (54%) had the highest incidence of occurrence followed by Kleblesella sp. (19%) and Proteus sp (15%) while the least was S. aureus (4%). The organisms’ sensitivity test reveals that they were highly sensitive to gentamycin. The bacteria responsible for otitis media are pathogenic, therefore effort should be made to reduce the factors militating its occurrence of these pathogens in the community.[...] Read More.
Keywords: Otitis media, eustachian tube, salpingitis, gentamicin, prevalence, pathogenic.
  2013, 12(1), 1-6; 
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Research Article
Afia Ghafoor* and Shahida Hasnain
Abstract: Bacillus strains isolated from different habitats were screened and identified for high protease activity. Two of the bacillus strains genetically identified as Bacillus subtilis AG-1 and Bacillus subtilis EAG-2 exhibited tremendous potential for protease production. The strains were optimized with respect to production media and its components. Culture conditions were critically investigated with reference to other key determinants, involving inoculum concentration, incubation time, initial pH of the medium and temperature. The optimum production pH and temperature was found to be 7.0 and 35oC for B. subtilis AG-1, while 7.2 and 37oC were the optimum conditions for B. subtilis EAG-2. The inoculation ratio and incubation time were determined for both of the strains as 1% (v/v) and 24-32 h respectively. The study reveals that, high protease yield can be achieved over a moderate fermentation period with relatively economical production costs. Hence these strains might be useful for commercial exploitation.[...] Read More.
Keywords: Bacillus subtilis, protease, production medium, pharmamedia, optimum growth.
  2013, 12(1), 1-6; 
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Views:481
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Research Article
Shanmugam Velmurugan* and Santhanam Rajagopal
  2013, 12(1), 1-6; 
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Research Article
M. E. Zain, A. A. Razak, H. H. El-Sheikh, H. G. Soliman and A. M. Khalil
Abstract: Three fungal strains; namely, Aspergillus terreus, Penicillium janthinellum and Penicillium duclauxii were cultured on different growth media including yeast extract, malt extract, yeast-malt extract, Czapek's Dox, Sabourod's, Harrlod's, and potato dextrose. The growth and secondary metabolites of the three fungal strains were greatly affected by the growth medium. The colour of the culture and secondary metabolites were noticeably altered and changed according to the growth medium used.[...] Read More.
Keywords: Growth medium, Aspergillus, Penicillium, Secondary metabolites, Culture characteristics.
  2013, 12(1), 1-6; 
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Research Article
V. Karthikeyan* and S. W. Santosh
Abstract: Bacteriocin producing Lactobacillus plantarum strain isolated from marine shrimp (Penaeus monodon) gut, showed broad range of antibacterial activity against some major food born pathogens. Maximum bacteriocin production was observed at 50°C, pH 4 and 0.9% sodium chloride solution. The bacteriocin has purified by ammonium sulphate precipitate and ion exchange (DEAE cellulose) chromatography. Biochemically it was pure protein moiety and the molecular weight was 2.5 KDa based on the plasmid curing experiment, suggesting that the bacteriocin was a plasmid encoded protein molecule. The study revealed the possibility of using bacteriocin as a food preservative and the L. plantarum strain as probiotic.[...] Read More.
Keywords: Antagonistic activity, bacteriocin, chromatography, Lactobacillus plantarum.
  2013, 12(1), 1-6; 
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Research Article
Fatimata Ndiaye,*, Anicet Manga, Gnagna Diagne- Leye, Samba Arona Ndiaye Samba and Tahir Abdoulaye Diop,
Abstract: A greenhouse experiment was conducted to evaluate the effects of different indigenous arbuscular mycorrhizal (AM) fungi on the mobilization of phosphorus from Senegalese natural rock phosphate (NRP) for growth of Gliricidia sepium and Sesbania sesban seedlings. Levels of tested NRP were compatible with high AM fungal proliferation but modified pattern of root colonization according to plant cultivar and fungal species. NRP applications and AM inoculation positively stimulated growth parameters and shoot mineral mass of G. sepium and S. sesban after four months cultivation. More than 200% of weight gains in S. sesban were recorded with all AM fungi combined with 600 or 800 mg NRP. With Gliricidia, only Glomus aggregatum in presence with these high NRP levels induced the same tendency. Glomus fasciculatum enhanced twice height growth of Sesbania in presence of 400, 600 and 800 mg NRP. The impact of dual application of AM fungi and NRP on nutritional content was more marked with Sesbania than in Gliricidia seedlings.[...] Read More.
Keywords: Rock Phosphate, AM fungi, Ghricidia sepium, Sesbania sesban.
  2013, 12(1), 1-6; 
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Research Article
Chaiba Abdellah, Rhazi Filali Fouzia*, Chahlaoui Abdelkader, Soulaymani Bencheikh Rachida and Zerhouni Mouloud
Abstract: A study was made of Salmonella contamination in chicken carcasses and giblets sampled from retail outlets in Meknès, Morocco. The serotypes as well as antibiotic-resistance patterns of the Salmonella isolates were determined. A total of 576 samples (144 from popular market, 144 from artisanal slaughterhouses, 144 from poulterers’ shops and 144 from a supermarket) were tested. Among them, 57 (9.90%) were positive for Salmonella, 20.83% (30/57) from popular market, 16.66% (24/57) from artisanal slaughterhouses and 2.08% (3/57) from poulterers’ shops. The 57 Salmonella isolates were divided into 4 serotypes. The most prevalent serotypes were Salmonella typhimurium (40.35%) and S. newport (26.31%). All Salmonella isolates were tested for their susceptibility to 12 selected antimicrobial agents by the agar diffusion method. 43 (75.43%) isolates were resistant to one or more antimicrobials. Out of 43 resistant Salmonella isolates, 17 (39.5%) showed multiple resistance to tow or more different antimicrobials. Resistance to tetracycline, sulfamides, trimethoprim and streptomycin was the most frequent. We found 17 different patterns of multiresistant strains. The high level of antibiotic resistance of Salmonella isolates in the present study showed the possible significance of chicken meat as a source of multiple antimicrobial-resistant Salmonella for human infections and suggest more restrict-tions on the irrational use of antibiotics.[...] Read More.
Keywords: Salmonella, antibiotic-resistance, chicken, retail outlets, Mèknès, Morocco.
  2013, 12(1), 1-6; 
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Short Communication
Sulaiman Ali Alharbi
  2013, 12(1), 1-6; 
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Views:567
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Research Article
Muhammad, Nasiru Olanrewaju * and Oloyede, Oyelola Bukoye
  2013, 12(1), 1-6; 
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Views:488
Download:786
Research Article
Del Nobile, M. A.,*, Conte, A. , Incoronato, A. L. and Panza, O.
  2013, 12(1), 1-6; 
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Views:498
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Research Article
Oyeleke, S. B.
Abstract: Five samples each of twenty brands of commercially produced yoghurt were purchased randomly from different provision stores within Minna. The results showed that the total bacterial count ranged from 1.0 x 107 to 9.4 x 107 cfu/ml. The organisms isolated included species of Staphylococcus, Lactobacillus, Enterobacter and Bacillus, for bacteria, and species of Aspergillus, Fusarium, Candida, Penicillium, Cephalosporium and Mucor for fungi. However, species of Bacillus and Aspergillus were isolated the most frequently. The result revealed that yoghurt commercially produce in Minna are of high quality. All effort should be geared toward sustaining it.[...] Read More.
Keywords: Yoghurt, commercially, bifidobacteria, probiotic, lactobacili.
  2013, 12(1), 1-6; 
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Views:529
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Research Article
Babajide, J. M.*, Atanda, O. O, Ibrahim, T. A., Majolagbe, H.O. and Akinbayode, S. A.
  2013, 12(1), 1-6; 
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Research Article
Batool Keramat, *, Khosrow Manouchehri Kalantari, and Mohammad Javad Arvin
Abstract: The jasmonates are a group of plant–growth regulators that cause a wide variety of plant responses. Cadmium (Cd) is a toxic heavy metal, which causes toxicity in living organisms, and is considered as an environmental contaminant. In present investigation, the interactive effects of methyl jasmonate (0, 0.01 or 0.1 mM) and cadmium chloride (0 or 500 µM) on malondialdehyde (MDA), hydrogen peroxide (H2O 2) and antioxidant enzymes in soybean (Glycine max L.) leaves were studied. Treatment of methyl jasmonate (MeJA) together with cadmium reduced the amount of H2O2 and MDA when compared with cadmium treated plants. The activity of superoxide dismutase (SOD), ascorbate peroxidase (APX) and catalase (CAT), increased in treated plants with MeJA, and Cd, but guaiacol peroxidase (GPX) activity did not show any noticeable difference. In addition, MeJA treatment increased the amount of dehydro ascorbic acid (DHA) in plants under Cd stress whereas, there was no significant difference in the content of ascorbic acid (ASA). Based on our results, it seems that the application of MeJA together with Cd caused alleviation of Cd damages by the reduction of MDA and H2O2 content and increase in activities of antioxidant enzymes in soybean plants.[...] Read More.
Keywords: Ascorbate peroxidase, catalase, lipid peroxidation, superoxide dismutase.
  2013, 12(1), 1-6; 
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Research Article
P. Daisy, Kanakappan Santosh and M. Rajathi*
Abstract: This study aims to investigate the therapeutic effects of Clitoria ternatea Linn. leaves and flowers extract on alloxan-induced diabetic rats. The effect of aqueous extract of C. ternatea leaves and flowers on serum glucose, glycosylated hemoglobin, insulin, total cholesterol, triglycerides, HDL-cholesterol, protein, urea, creatinine were examined in control and extract treated diabetic rats. Glycogen was examined both in the liver and skeletal muscles of control and extract treated diabetic rats, whereas, the activity of glycolytic enzyme glucokinase and gluconeogenic enzyme glucose-6- phosphatase was examined in the liver. Oral administration of aqueous extract of C. ternatea leaves (400 mg/kg body weight) and flowers (400 mg/kg body weight) for 84 days significantly reduced serum glucose, glycosylated hemoglobin, total cholesterol, triglycerides, urea, creatinine and the activity of gluconeogenic enzyme glucose-6-phosphatase, but increased serum insulin, HDL-cholesterol, protein, liver and skeletal muscle glycogen content and the activity of glycolytic enzyme glucokinase. For all the above biochemical parameters investigated, C. ternatea leaves treated rat showed a little better activity than C. ternatea flowers treated diabetic rats. The present investigation suggests that C. ternatea leaves and flowers extract exhibit antihyperglycaemic and antihyperlipidaemic effects and consequently may alleviate liver and renal damage associated with alloxan-induced diabetes mellitus in rats.[...] Read More.
Keywords: Alloxan, diabetes mellitus, Clitoria ternatea, enzymes, hemoglobin.
  2013, 12(1), 1-6; 
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Views:551
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Research Article
A. O. T. Ashafa* and A. J Afolayan*
Abstract: Chrysocoma ciliata L. is a medicinal plant used in the management of pains, stomach and menstrual disorders in the Eastern Cape province of South Africa. Studies were conducted to determine the antimicrobial activity of the extracts from this herb. All the extracts except water extract, inhibited Staphylococcus aereus, Staphylococcus epidermidus, Bacillus cereus and Streptococcus faecalis at minimum inhibitory concentration (MIC) less than 0.1 mg/ml. The extracts also inhibited the gram-negative bacteria tested including the popularly known antibiotic resistant Pseudomonas aeruginosa with MIC ranging from 1.56 to 12.5 mg/ml. All the extracts at the concentration of 0.5 mg/ml, suppressed the growth of Aspergillus niger, Aspergillus flavus and Penicilium notatum with percentage inhibition ranging from 50.83 to 88.33%. The ethanol and methanol extracts were able to inhibit the growth of Candida albicans at 5.0 mg/ml. Results from this study have shown that extracts from C. ciliata displayed strong antimicrobial activity, which is a manifestation of the plant’s broad spectrum potential for the treatment of microbial induced ailments including complications and disorders associated with the female reproductive and genital organs. This herb could be a potential agent for antibiotic bioprospecting.[...] Read More.
Keywords: Chrysocoma ciliata, medicinal plant, menstrual disorder, antimicrobial activity, bioprospecting.
  2013, 12(1), 1-6; 
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Research Article
D. Jothi
Abstract: Biotechnology is a frontier area in science and technology having significant commercial applications in healthcare, agriculture, process industry and service sectors the world over. Ethiopia is in an advantageous position to harness the potential of biotechnology due to its unique strengths such as availability of technical expertise, skilled manpower, rich bio-resources and progressive government policies. The country is also rapidly emerging as a major market for biotech products. Today, new processes and products are closely linked with biotechnology in many research and industrial fields. There are the most diverse possibilities for its profitable use in the textile industry too. In this study, aloe gel has applied to 100% cotton fabric to develop antimicrobial fabric. In order to optimize the process parameter, cotton fabric was treated with Aloe vera extract (Aloe barbadensis Mill) at various concentrations that is 1, 2, 3 and 5 gpl at 60°C for 30 min by pad-dry –cure method. Methanol was used as a solvent for aloe gel extraction from Aloe vera plant. The finished fabric samples have been tested for activity as per the ATCC (Agar diffusion) method and quantitative analysis test method. The aloe gel treated fabrics exhibited antimicrobial activity against the Staphylococcus aureus (ATCC 6538). The treated cotton fabrics have shown excellent antimicrobial activity at 5 gpl concentration. The wash durability of the treated sample was found good even after 50 wash.[...] Read More.
Keywords: Biotechnology, agar plate, micro organism, Aloe vera.
  2013, 12(1), 1-6; 
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Research Article
N. L. Tatsadjieu*, Y. N Njintang, T. Kemgang Sonfack, B. Daoudou and C. M. F. Mbofung
Abstract: 30 strains of lactic acid bacteria (LAB) isolated from 5 samples, raw and fermented cow milk, cow meat, soil and fermented-dried cassava, were screened for their antimicrobial activity against poultry pathogens Salmonella enterica CIP8132 and Escherichia coli CIP548. All the lactobacillus strains were active against the target pathogens with the strains LF2, SM3, SM4, V3 and V5 exhibiting activity higher than 25 mm. 4 of the 5 isolated cultures were confirmed as bacteriocin producing cultures, in addition LF2 strain was cocci, can grow on sucrose, was thermal resistant and was partially inhibited by proteinase K and lysozyme suggesting a nisin-like molecule. This strain with promising future needs to be further characterised.[...] Read More.
Keywords: Lactic acid bacteria, antimicrobial activity, bacteriocins, Salmonella enterica, Escherichia coli.
  2013, 12(1), 1-6; 
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Research Article
S. C. Enemuor* and A. S. Amedu
  2013, 12(1), 1-6; 
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Views:545
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Research Article
Ahmad Sabzali , Mitra Gholami and M. A. Sadati
  2013, 12(1), 1-6; 
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Review
Zhu CH , Hassan H. Musa , Wu SL and Zhu GQ*
  2013, 12(1), 1-6; 
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Views:566
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Research Article
Narasimha Rao Kollu*, Sivadevuni Girisham and Solipuram Madhusudhan Reddy
  2013, 12(1), 1-6; 
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Views:574
Download:792
Research Article
Omer Mohamed Khalil* and Meshref Awad Al-Ruaily
  2013, 12(1), 1-6; 
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Views:549
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Research Article
Charu Gupta*, Amar P. Garg , Ramesh C. Uniyal and Archana Kumari
  2013, 12(1), 1-6; 
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Views:547
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Research Article
A. O. Ojo, E. van Heerden and L. A. Piater*
  2013, 12(1), 1-6; 
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Research Article
Fausto Gardini, Nicoletta Belletti, Maurice Ndagijimana, Maria E. Guerzoni, Francois
Abstract: The composition of four essential oils (EOs) extracted by hydrodistillation from plants of common use in Cameroon (Curcuma longa, Xylopia aethiopica, Zanthoxylum leprieurii L., Zanthoxylum xanthoxyloides) was assessed by gas chromatography-mass. Their bactericidal and bacteriostatic activity was tested in vitro against three food borne pathogenic bacteria: Listeria monocytogenes, Salmonella enteritidis and Staphylococcus aureus. The bacteriostatic activities of this EOs on food borne bacteria were assessed in vitro through optical density measurements. The minimal bactericidal concentrations (MBC) were determined in broth combined with a spot plating method. Z. xanthoxyloides and Z . leprieurii showed a similar composition, with a prevalence of oxygenated monoterpenes (about 58%). The EO of Z. xanthoxyloides was the most effective against the microorganisms tested. Its higher concentration of geraniol could be linked to this higher activity. In almost all cases, the MBC was higher than the maximum concentration tested (3000 ppm). Notwithstanding their low bactericidal effect, the EOs studied showed interesting inhibiting activities against the tested food borne pathogens. S. enteritidis was the most resistant to the bacteriostatic effect of the four EOs. The knowledge of the antimicrobial potential of local plant EOs used in developing countries could help in their choice and their use to improve food safety and shelf-life.[...] Read More.
Keywords: Essential oils, composition analysis, antimicrobial activity, pathogens.
  2013, 12(1), 1-6; 
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Research Article
Stephen A. Enabulele* and Nduka Uraih
Abstract: Food samples made up of three meat types of 72 samples each of fresh meat from abattoir and open traditional market and “ready to eat” grilled meat (suya) and three vegetable types consisting of 72 each of cabbage, lettuce and tomatoes all totaling 432 samples, were screened to determine the presence of Escherichia coli 0157:H7 in these food items sold in Benin City, Nigeria. Of the total food samples analyzed E. coli was isolated from 365(84.45%) out of which 10(2.32%) had E. coli 0157:H7. 72(100%) each of the abattoir and open traditional market samples had E. coli, while 41(56.9%) suya samples had E. coli isolated from them. Of these, 5(6.94%) abattoir samples, 2(2.78) open traditional market and 3(4.17%) suya samples had E. coli 0157:H7 present on them. The cabbage, lettuce and tomatoes had 48(66.67%), 68(94.99%) and 64(88.8%) samples with E. coli respectively. E. coli 0157:H7 was not detected in any of the vegetable samples. Most significant of the result is the finding that E. coli 0157:H7 is present in meat sold in Benin City, Nigeria and especially in the “ready to eat” grilled meat ( suya) which is consumed directly without further processing. There is therefore the need for health authorities to put in place measures to prevent possible E. coli 0157:H7 outbreak.[...] Read More.
Keywords: Escherichia coli 0157:H7, meat, vegetables, suya.
  2013, 12(1), 1-6; 
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Research Article
*Esayas Assefa , Fekadu Beyene and Amutha Santhanam
  2013, 12(1), 1-6; 
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Research Article
Ehsanollah G. R.*, V. Neela, Chong P. P., Zamberi S. and Mariana N. S.
Abstract: Staphylococcus aureus is a major human pathogen capable of causing a wide range of infections. Treatment of S. aureus infections is becoming more challenging with the continuous emergence of new strains of methicillin resistant S. aureus (MRSA) from hospital and community. The aim of the present study is to formulate an oil based combinatorial herbal extract which will not only have antibacterial effect for treatment, but also anti-adhesive and anti-invasive activities against MRSA for to be used as a prophylactic agent. Based on the Indian and Iranian traditional medicine, herbs such as barberry and turmeric which has medicinal properties are tested against MRSA. MRSA and S. aureus strains exposed to oil based di-herbal extract prepared from coconut oil, barberry and turmeric suppressed the partial expression of fibronectin binding protein (FNBP) encoded by fibronectin binding gene (fnbA), that establishes the attachment to and invasion of host cells. Results from the current study showed that the formulated extract has good anti-bacterial, anti-adhesive and anti-invasive activity against S. aureus and MRSA as it showed good zone of inhibition (15 mm) and inhibited the FNB protein synthesis. The formulated combinatorial herbal extract thus could be used for the treatment of S. aureus and MRSA infections as well as for prophylaxis; thus controls the spread of MDR S. aureus strains in hospital and community.[...] Read More.
Keywords: Anti adhesive, Anti invasive, barberry, coconut oil, turmeric, MRSA.
  2013, 12(1), 1-6; 
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Research Article
S. C. Enemuor* and A. S. Amedu
  2013, 12(1), 1-6; 
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Research Article
Jyotirmayee Das, Bandana Das and Tushar Kanti Dangar
  2013, 12(1), 1-6; 
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Research Article
Sadaka S. M., El-Ghazzawy E. F., Harfoush R. A.* and Meheissen M. A.
  2013, 12(1), 1-6; 
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Research Article
Oyeleke*, S. B. and Oduwole, A. A.
  2013, 12(1), 1-6; 
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Research Article
K. Elhabazi*, A. Ouacherif , A. Laroubi , R. Aboufatima , A. Abbad , A. Benharref , A. Zyad , A. Chait and A. Dalal .
  2013, 12(1), 1-6; 
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Research Article
L. B. Taiwo * and M. Ogundiya
  2013, 12(1), 1-6; 
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A. O. Oghenekaro, J. A Okhuoya and E. O Akpaja
  2013, 12(1), 1-6; 
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Soumaya El Herry , Hichem Nasri, and Noureddine Bouaïcha *
  2013, 12(1), 1-6; 
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Research Article
Sekaran, S. D.*, Ew, C. L., Subramaniam, G., Kanthesh, B. M.
  2013, 12(1), 1-6; 
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Research Article
Suchitra Joyce B.* and Lakshmidevi N.
  2013, 12(1), 1-6; 
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Research Article
Krishna Bolla*, Syed Zeenat Shaheen, Kandukuri Vasu and M. A. Singara Charya
  2013, 12(1), 1-6; 
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W. F. Sule , S. C. Enemuor , M. O. Adewumi * and O. C. Attah
  2013, 12(1), 1-6; 
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K. A. Yongabi*, P. L. Harris , D. M. Lewis and M. O. Agho
  2013, 12(1), 1-6; 
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