African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Table of Content: 4 January 2007; 6(1)

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...

Author(s): Kouassi-M’Bengue, A., Ekaza, Euloge, Attia. A. , Kacou N’Douba, A.  and M. Dosso.

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...

Author(s): Ibrahim Ilker Ozyigit, Memet Vezir Kahraman, Ozgen Ercan

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...

Author(s): B. Hameeda, G. Harini, O.P. Rupela and Gopal Reddy

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...

Author(s): Ehiagbonare J. E.

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...

Author(s): KC Shenge, RB Mabagala and CN Mortensen

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...

Author(s): T.  Mandri and J.  Lin

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...

Author(s): M. M. Ekperigin

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...

Author(s): Makun, H. A., Gbodi, T. A., Tijani, A. S., Abai, A. and Kadiri, G. U.

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...

Author(s): Muthuvelayudham, R. and Viruthagiri, T.

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...

Author(s): G. Rajasekhar, M.Ramgopal, A. Sridevi and G. Narasimha