Category: BIOLOGY

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Phenomenon of Bacterial Pathogenicity as a Function of Bo-molecules

The bacterial pathogenicity phenomenon is the poly-functional biological potency of germs that are realized by factors (determinants) of pathogenicity (PF) in multi-cellular organism.   Biological functions are responsible for bacterial pathogenicity in a multi-cellular host organism: the adhesive function, the function of invasion and penetration into the cell, the function of evasion of host defense, and…
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July 24, 2019 0

Partial Purification and Antimycobacterial Screening of the Ethyl Acetate Extract of Alcaligenes faecalis BW1

Aims: The focus of this study was to evaluate the antimycobacterial activity of Alcaligenes faecalis BW1 extract and to purify it partially. Study Design: Partial purification of A. faecalis BW1 extract was performed by using thin layer chromatography and active substances responsible for the biological activity were localized. Place and Duration of Study: The study…
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July 24, 2019 0

Tolerance Tests of Alcaligenes faecalis BW1 Extract

Aims: To highlight whether metabolites of Alcaligenes faecalis BW1 extract can be administered orally for their possible antimycobacterial effects. Study Design: Study of the influence of certain parameters on the extract of Alcaligenes faecalis by using either discs or well diffusion methods against M. smegmatis. Place and Duration of Study: Laboratory of Microbial Biotechnology, Department…
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July 24, 2019 0

Assessment of Changes in Beta-carotene Content and Sensory Attributes of Two Sweet Potato Varieties as Influenced by Organic and Inorganic Fertilizers and Storage Methods

Two field experiments were conducted at two seasons at the research fields of the University of Education, Winneba-Mampong campus  from September, 2011 to January, 2012  and April to July, 2012 to assess changes in beta-carotene content and sensory attributes of two sweet potato varieties (Okumkom and Apomuden) grown under organic and inorganic fertilizers and three…
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July 13, 2019 0

Bacillus spp with an Antibacterial Activity

Bacterial resistance to antibiotics poses a serious challenge to chemotherapy. Indeed, in recent decades, the risk of contracting infectious diseases has increased significantly due to the emergence and spread of multi-drug-resistant bacteria. The whole world is thus confronted with this situation which motivated scientists to find out new active molecules with an antibacterial effect. Therefore,…
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July 13, 2019 0

Evaluation of Three Phenotypic Tests vs. Duplex (coa & mecA) PCR for Detection of Methicillin-Resistance Staphylococcus aureus (MRSA) and S. epidermidis (MRSE) Strains from Patients with Nosocomial Infections (NI) in Several Mexican Hospitals

Background: Staphylococcus aureus (SA) and Staphylococcus epidermidis are a leading cause of hospital acquired infections worldwide. Epidemiological features have also changed in Mexican hospitals and either methicillin-resistance Staphylococcus aureus (MRSA) or Staphylococcus epidermidis (SERM) infections appear to be an emerging phenomenon.   Aims: The first aim of the present study was to detect the amplification of…
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July 13, 2019 0

Chemical Composition of Myrtus communis L. (Myrtaceae) Fruits

The chemical composition of Myrtus communis L. extracts were prepared and analyzed by GC-MS. Sixteen phytochemical constituents of chemical compounds were identified in fruits of Myrtus communis. The relative percentage of linoleic acid methyl ester was high (27.19%), followed by oleic acid methyl ester (21.18%) and then octane 3,5- dimethyl (16.47%), dodecane (11.39%), palmitic acid…
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July 13, 2019 0

Copper Nanomaterials as Delivery System in Combating Infective Agents and Cancer

Infectious diseases portend serious threat hazards to public health globally due to the development of the resistance to broad spectrum antimicrobials, the emergence of multidrug resistant biofilms, the drug side-toxicity, the non-specificity of drug targeting and the inability to overcome biological barriers. In this context, nanotechnology-based metal nanoparticles have attracted attention as nanomedicine against different…
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July 13, 2019 0

Keratin Degradation by Penicillium purpurogenum and Aspergillus niger Isolated from Nigerian Soils Polluted with Tannery Wastes

Background: Keratinophilic fungi are a group of fungi that colonize various keratinous substrates and degrade them to components of low molecular weight. Keratinized tissues include feathers, beaks of birds, horns, hooves, skins, hair, fur, wool, nails and claws of animals. Tannery soils are very rich in keratinous materials such as fur, wool and hair that…
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July 13, 2019 0

Antibiotics Susceptibility Pattern of Methicillin Resistant Staphylococcus aureus (MRSA) in Enugu State, South-East Region of Nigeria

Development of antimicrobial resistance by bacteria is now a worldwide health issue, as infection is one of the leading causes of death in the world today. The aim of this study was to evaluate the prevalence and antimicrobials susceptibility pattern of Methicilin-Resistant Staphylococcus aureus in 3 different hospitals in South-East geopolitical region of Nigeria. The…
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July 13, 2019 0