January 2007
Distribution of hepatitis B virus genotypes in 50 patients with chronic hepatitis B in Abidjan–Côte d’Ivoire in 2003
Hepatitis B virus (HBV) strains isolated worldwide have been classified into eight genomic groups deduced from genome comparisons and designated as genotypes A to H. In order to investigate the prevalence of HBV genotypes in Abidjan-Cote d’Ivoire, a total of 50 chronic hepatitis B patients from two teaching hospitals were enrolled. Patients who were HBs Ag positive in serum at least for 6 months, who had HBV- DNA...
January 2007
Relation between explant age, total phenols and regeneration response in tissue cultured cotton (Gossypium hirsutum L.)
The aim of this study is to determine total phenol amount of the explants and to expose relation between explant age, total phenols and regeneration response for tissue culture and gene transfer systems of cotton (Gossypium hirsutum L.). In this study, total phenol amount of 7, 14, 21 and 28 day old cotton (G. hirsutum L) var. Nazilli 84S explants and excreted total phenols into...
January 2007
Effect of composts or vermicomposts on sorghum growth and mycorrhizal colonization
Rice straw compost (RSC) and rice straw vermicompost (RSVC) were prepared and four weeks after maturity used for plant growth studies using sorghum as host plant under glasshouse conditions. Both RSC and RSVC were applied at different concentrations with and without arbascular mycorrhizae (AM) (Glomus spp.) as additional inoculants for plant growth and mycorrhzial colonization in roots. RSC or RSVC...
January 2007
Macropropagation of Ocimum gratissimum L: A multi purpose medicinal plant in Nigeria
The purpose of this study was to determine optimum macropropagation method forOcimum gratissimum, a multi purpose medicinal plant. The result showed that significant differences exist as influenced by seed sowing depth and type of soil. Seed sown at 1 cm depth in humus rich topsoil had 80% germination as against 26.3% from river sand of the same sowing depth. The surface sowing in humus rich...
January 2007
Identification and characterization of strains of Xanthomonas campestris pv. Vesicatoria from Tanzania by biolog system and sensitivity to antibiotics
Thirty five strains of Xanthomonas campestris pv. vesicatoria collected from different tomato-producing areas in three Regions (Morogoro, Arusha and Iringa), representing three different ecological conditions in Tanzania were characterized using their carbon source utilization profiles by the GN Microplate system, and their sensitivity to antibiotics. Although most of the strains could not be...
January 2007
Isolation and characterization of engine oil degrading indigenous microrganisms in Kwazulu-Natal, South Africa
As the usage of petroleum hydrocarbon products increases, soil contamination with diesel and engine oils is becoming one of the major environmental problems. To investigate the countermeasure to remediate soils contaminated with oils, bioremediation provide an effective and efficient strategy to speed up the clean-up processes. Three bacterial isolates capable of utilizing used engine-oil as a carbon source...
January 2007
Preliminary studies of cellulase production by Acinetobacter anitratus and Branhamella sp.
Two Bacteria species, Acinetobacter anitratus and Branhamella sp., were isolated from the haemolymph of the giant African snail, Archachatina marginata. The endocellulase activity of the culture broth was determined during bacterial growth by measuring the release of reducing sugar from carboxymethyl cellulose (CMC). The peak of enzyme production occurred at the late logarithm...
January 2007
Toxicologic screening of fungi isolated from millet (pennisetum spp) during the rainy and dry harmattan seasons in Niger state, Nigeria
A survey of fungi contaminating mouldy field, stored and marketed millet samples collected during rainy and dry harmattan seasons of the year 2000 from the twenty five local government areas of Niger State, Nigeria, was conducted. Some of the fungal isolates from the two groups of samples were screened for their mycotoxin producing potentials in mice. Aflatoxin B1 content of the rainy season millet...
January 2007
Optimization and modeling of cellulase protein from Trichoderma reesei Rut C30 using mixed substrate
Bioethanol from cellulosic raw material has proved to be the best alternative renewable energy source. Cellulase is a multienzyme complex catalyses the bioconversion of cellulose to glucose, which can be used for ethanol production. The objective of this research is to reduce the cost of cellulase production by optimization of fermentation conditions and modeling of the fermentation process. Research surface...
January 2007
Screening of the fruit pulp extract of Momordica balsamina for anti HIV property
Anti-HIV properties of the fruit pulp extract of Momordica balsamina, a plant of the cucurbitacea family commonly used in the Northern part of Nigeria for its anti-viral efficacy in poultry, was studied in vitro. Peripheral blood mononuclear cells (PBMCs) were prepared from both HIV sero positive and sero negative patients and categorized into group A (sero negative), group B (PBMC...
January 2007
Some hematological and biochemical parameters in smokeless tobacco (Jharda) chewers
The effect of Jharda powder (smokeless tobacco) on some hematological and biochemical parameters in consumers was investigated. Hematological parameters including hemoglobin content and white blood cell and leukocyte counts were higher in jharda powder consumers, while monocytes and basophiles counts were lower. Higher biochemical parameters like serum cholesterol, glucose and protein were observed in blood...
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