African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12209

Table of Content: 3 APRIL 2008; 7(7)

April 2008

Bioassay-based screening of myxobacteria producing antitumor secondary metabolites

  Myxobacteria are gliding gram-negative bacteria and a class of prokaryote with complicated multicellular behaviors and morphogenesis.  Reports show that myxobacteria generally produce large families of secondary metabolites with various bioactivities, such as antifungal and anti-tumor activities.  In this paper, two strains producing metabolites with high anticancer bioactivity to 5 tumor cell lines...

Author(s): Wen-Jie Guo, Feng-Jie Cui and Wen-Yi Tao,

April 2008

Effects of hydrochlorothiazide and furosemide on creatinine clearance in some hypertensive Nigerians

  Hydrochlorothiazide and furosemide have been reported to alter the glomerular filtration rate (GFR) and possibly the creatinine excretion by the kidneys. Also, therapy with these diuretics, especially in the elderly, can be complicated by volume depletion resulting in prerenal azotemia. Creatinine clearance (Clcr) is considered to be the most accurate test of renal function. Unfortunately, although these...

Author(s): Godfrey B. S. Iyalomhe, Eric K. I. Omogbai, Raymond I. Ozolua and Osigbemhe O. B. Iyalomhe

April 2008

KAtex antigen-detection test as a diagnostic tool for latent visceral leishmaniasis cases

  Kala-azar is an infectious disease that mostly affects children under 5 years old, and, in untreated cases, is fatal. There are several routine serological tests employed to diagnose the disease, but these tests have disadvantages. Parasitological diagnosis tools are accurate but invasive, while molecular tools are expensive and not commonly used. We report that the newly developed kAtex test is a rapid, non...

Author(s): AbdolSamad Mazloumi Gavgani, Shahram KhademVatan and Ardavan Ghazanchaei

April 2008

The ability of T2/B4 primers to detect Leishmania infantum among peripheral blood of visceral leishmaniasis patients in Iran

  Leishmaniasis, caused by protozoa of the genus leishmania, is a zoonotic and anthroponotic disease that is endemic through the tropical and subtropical regions. Twelve million people are affected worldwide and 350 million are at risk. Visceral leishmaniasis in Iran is sporadic in almost all part of Iran and the endemic regions have increased in many districts throughout Iran, the Kalybar, Ahar and...

Author(s): Bahram Kazemi, Hosein Bijanpour, Mohammad Asgharzadeh, Ardavan Ghazanchaei and AbdolSamad Mazloumi Gavgani

April 2008

Sperm quality of male rats treated with aqueous extract of Enantia chlorantha stem bark

  The effects of aqueous extract of Enantia chlorantha were studied on sperm motility, viability and counts in adult albino rats. Oral administration of 50 and 100 mg/kg body weight of the extract daily for a week caused dose-dependent changes in the sperm motility and viability without a significant change in the sperm counts. There was a significant increase in sperm motility and viability (P...

Author(s): Toyin M. Salman and Ayoade A. Adesokan

April 2008

Evaluation of some bioagents and botanicals in in vitro control of Colletotrichum destructivum

  Collectotrichum destructivum has not been effectively controlled. This led to trials on the use of bio-agents and botanicals to control the pathogen. The bio-agents such as Pseudomonas fluorescens, Bacillus subtilis, Trichoderma harzianum and Trichoderma pseudokoningii were inoculated as dixenic culture with the pathogen to monitor antagonistic effect. In another experiment,...

Author(s): Akinbode, O. A and T. Ikotun

April 2008

Efficiency of NEB-33 fortified fertilizers on growth and yield of pepper (Capsicum fruitscen)

  A two year field study was conducted in Institute of Agriculture Reasearch and Training experimental field at Ibadan, Nigeria to evaluate the effects of NEB-33 fertilizer additive on the growth and yield of chilli pepper (Capsium fruitscen). Treatments consisted of control, NPK, poultry manure (PM), organomineral fertilizer (OM), cow dung (CD) and their combinations with NEB-33. The organic fertilizers were...

Author(s): Akande, M. O., Kayode, C. O., Oluwatoyinbo, F. I. and Adediran, J. A.

April 2008

Induced tolerance of cowpea mutants to Maruca vitrata (Fabricius) (Lepidoptera: Pyralidae)

  A study was conducted to screen some cowpea mutants for resistance to Maruca vitrata. Fifteen selected cowpea mutants, the parent ‘IT84S2246 D’ as a susceptible check and a resistant check ‘Tvu 946’ were used in an intensive free choice test. Potted plant samples were randomly placed in a large screen cage and infested with adult females of Maruca for seven days. The...

Author(s): Olabisi F. Adekola and Funsho Oluleye

April 2008

Autotoxicity of chard and its allelopathic potentiality on germination and some metabolic activities associated with growth of wheat seedlings

  In this study, the allelopathic effect of aqueous whole mature chard plant extract (Beta vulgaris L. var. Cicla) on wheat (Triticum vulgare L. var. Sides 1) and an associated weed (chard) was investigated. Plants used were sampled in 2006, and then plant extracts were obtained after they were ground and processed with distilled water. Twenty five of wheat grains and the same number of...

Author(s): M. M. Hegab, S.E.A. Khodary, Ola Hammouda and H.R. Ghareib

April 2008

Micronuclei in red blood cells of armored catfish Hypostomus plecotomus exposed to potassium dichromate

  The present work aims to evaluate the impact of potassium dichromate in armored catfishes’ (Hypostomus plecotomus) erythropoiesis, using piscine micronucleus test. Armored catfishes (n = 30) were subjected to 12 mg/L of potassium dichromate, with an equal control group (n = 30). For each 2,000 red blood cells of animals subjected to treatment, it was possible to observe 8.25 ± 0.02% cells...

Author(s): Carlos Augusto Borba Meyer Normann, José Cláudio Fonseca Moreira and Valesca Veiga Cardoso

April 2008

Identification of SSR and RAPD markers associated with QTLs of winter survival and related traits in Brassica napus L.

  Because of importance of winter survival in winter type of Brassica napus, this study was performed to identify the QTLs controlling winter survival and related traits using SSR and RAPD markers. For this, an F2:3 population of 200 families derived from crossing between cv. ‘SLMO46’ (winter type and cold resistant) and cv. ‘Quantum’ (spring type and susceptible to low...

Author(s): Ali Asghari, Seyed Abolgasem Mohammadi, Mohammad Moghaddam and Ali Akbar Shokuhian

April 2008

Inheritance of characters in kenaf (Hibiscus cannabinus)

  This investigation was carried out to study the inheritance pattern in intraspecific crosses involving two local varieties of Hibiscus cannabinus L. One variety has pink flowers and resistance to root knot nematode, while the other variety has light yellow flowers but susceptible to root knot nematode. Results show that the inheritance of pink flowers and resistance to root knot nematode was controlled by two...

Author(s): Falusi O.A

April 2008

Effect of anhydrous magnesium sulphate fertilizer and cutting frequency on yield and chemical composition of Panicum maximum

  Effect of anhydrous magnesium sulphate fertilizer on Panicum maximum yield and chemical composition of the resultant herbage harvested at 3, 4 and 5 weeks of age was investigated. The treatments were labeled T1 to T6. T1 was fertilized and harvested at 3 weeks cutting interval, T2 was fertilized and harvested at 4 weeks cutting interval, T3 was fertilized and harvested at 5 weeks cutting interval,...

Author(s): S.O.K Fajemilehin, O.J. Babayemi and S.S. Fagbuaro

April 2008

Aloe plant extracts as alternative larvicides for mosquito control

  The larvicidal activity of extracts from Aloe turkanensis, Aloe ngongensis andAloe fibrosa against the common malaria vector, Anopheles gambie, was determined. Ground Aloe leaves from the three plants were sequentially extracted with hexane, ethyl acetate, chloroform, acetone and methanol. Only the ethyl acetate extract of A. turkanensis, hexane, ethyl acetate, acetone,...

Author(s): Josphat C. Matasyoh, Euty M. Wathuta, Samuel T. Kariuki, Regina Chepkorir and Judith Kavulani

April 2008

Technology and physico-chemical characteristics of Bikalga, alkaline fermented seeds of Hibiscus sabdariffa

  Bikalga is a product of traditional alkaline fermentation of Hibiscus sabdariffaused as food condiment in African countries including Burkina Faso. Its production process was studied at different production sites of Burkina Faso where the different steps of the technology were recorded, specific diagram of production of each production site was established and a general flow diagram proposed. The changes...

Author(s): Charles Parkouda, Bréhima Diawara and Labia Irène Ivette Ouoba