September 2013
Optimization of the fermentation conditions for ethanol production by new thermotolerant yeast strains of Kluyveromyces sp.
This study introduces two new thermotolerant strains of Kluyveromyces sp. for the biofuel industry to reduce the overall cost of production. The fermentation conditions including temperature, pH, incubation period and sugar concentration were adjusted. The two yeast strains were identified by sequencing of ITS1 and ITS2 regions. Comparing the sequence results with the GenBank reference proved that...
September 2013
Solubilization of phosphate by the Bacillus under salt stress and in the presence of osmoprotectant compounds
The Bacillus by their intrinsic properties have several mechanisms of procuring beneficial effects to plants. They are among the most successful bacterial communities in the solubilization of phosphates. Ten Bacillus strains were isolated from the rhizosphere of wheat from three areas in arid and semi-arid regions in Algeria. These strains were tested for their ability to solubilize phosphates on...
September 2013
Antibiotic resistance in Escherichia coli isolated from healthy cattle at a major cattle market in Ibadan, Oyo State, South Western, Nigeria
Isolation of multidrug resistant Escherichia coli from diseased livestock is becoming rampart from samples submitted for disease diagnostic purposes in some Tertiary Veterinary Teaching Hospitals in Nigeria. In order to evaluate the possible roles of commensal E. coli from apparently healthy animals in the epidemiology of drug resistant pathogens, antibiotic resistance status of...
September 2013
Effect of some botanicals on Colletotrichum destructivum O`Gara of cowpea
Colletotrichum destructivum is the causal pathogen of cowpea anthracnose; botanical extracts and benlate fungicide were evaluated as Biopesticides/chemical control strategies in cowpea (Vigna unguiculata L). Botanicals of four plants: Azadiractha indica,Cymbopogon citratus, Ocimum gratissimum, and Xylopia aethiopica, proved effective in reducing spore germination and colony...
September 2013
Bioremediation of 3,5-dinitrobenzoic acid and aniline by a Corynebacterium sp.
Corynebacterium sp was isolated from the soil by using 3-5 dinitro benzoic acid (DNB) as a sole carbon source. The highest rate of degradation of aniline (AN) or DNB was found in the exponential phase of the growth of the bacterium. After 24 h, about 50% of DNB and 30% of AN were degraded by Corynebacterium sp. At a concentration of 0.5 to 1 g/L of AN or DNB, good growth was...
September 2013
Antioxidant and anti-listerial activities of selected Egyptian medicinal plants
This work investigates the phenolic, antioxidant capacity of crude extracts of eight Egyptian medicinal plants (Syrian oregano, marjoram, rosemary, lemongrass, thyme, yarrow, marigold and sweet wormwood) and estimates their activity against Listeria monocytogenes, one of the most virulent food borne pathogens. Antioxidant activity of Rosemary (70.6±1.65%) and thyme (70.8±1.72%)...
September 2013
Novel characteristics and polymorphisms of hemagglutinin subunit 1 of 2009-2011 A/H1N1 viruses in Zhejiang, China
Since the 2009 pandemic A/H1N1 influenza virus emerged in North American, two H1N1 peaks have been reported in Zhejiang, China. The first peak occurred in November 2009 and the second in January 2011. In this study, we collected and analyzed the HA1 sequences of the Zhejiang H1N1 viruses in 2009 and 2010-2011. The phylogenic tree of HA1 suggested that the Zhejiang viruses were all derived from the 2009...
September 2013
Influence of hydrogen peroxide or gold nanoparticles in protoporphyrin IX mediated antimicrobial photodynamic therapy on Staphylococcus aureus
Antimicrobial photodynamic therapy (APDT) has been considered to treat skin diseases infected by drug resistant microorganisms. In this work, attempts were made to study the effectiveness of APDT with protoporphyrin IX (PPIX) in the presence of gold nanoparticles (GNPs) or hydrogen peroxide (H2O2) against the human bacterial pathogen,Staphylococcus aureus. To photoactivate the PPIX, xenon light source...
September 2013
Microbial contamination of radiographic films in maxillofacial surgery clinics
Radiographic investigation in maxillofacial surgery is a vital procedure in minor as well as major surgical procedures in dentistry and in this Department, for example, both analog and digital radiography is used. Patient files are usually transferred from one clinic to another according to the patient appointments and most dentists and surgeons routinely handle these files before treating patients. Since...
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