African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12479

Table of Content: 4 September 2006; 5(17)

September 2006

Biodiversity of few Indian charophyte taxa based on molecular characterization and construction of phylogenetic tree

The world charophyte flora suffered reshuffling in the taxonomic status of many taxa on the basis of certain morphological characters. Large numbers of species were reduced to the status of subspecies, variety or forma while some distant species were merged together. In this study, molecular characteristics such as band frequency, RAPD polymorphism, genetic identity index or similarity index, band sharing frequency and...

Author(s): DEEPIKA ABROL and S. K. BHATNAGAR

September 2006

Bacterial Cellulose Production from Beet Molasses

Bacterial friendly cellulose is produced from beet molasses usingGluconacetobacter xylinus ATCC 10245. The yield of the bacterial cellulose(BC) produced from beet molasses was higher than that using glucose as a sole carbon source. The structure of BC produced in presence of beet molasses was studied using IR spectroscopy and X-ray diffractometry. IR spectra show the relative...

Author(s): Sherif M. A. S. Keshk, Taha M. A. Razek and Kazuhiko Sameshima

September 2006

Utilization of various industrial wastes for the production of poly-b-hydroxy butyrate (PHB) by Alcaligenes eutrophus

Considering the industrial interest of poly-b-hydroxy butyrate (PHB) and its high production cost, work has been undertaken for the production of PHB byAlcaligenes eutrophus. Different industrial wastes (malt, soya, sesame, molasses, bagasse and pharmaceutical waste) were used as a cheap substrate to minimize the production of cost and nitrogen limited minimal agar synthetic medium was also used for comparison....

Author(s): A. Arun , Rm.Murrugappan, A. D. David Ravindran, V. Veeramanikandan and Shanmuga Balaji

September 2006

Isolation and Characterization of Starches from eight Dioscorea alata cultivars grown in Jamaica

Starches from eight Dioscorea alata cultivars grown in Jamaica were isolated and characterized. The starches were found to possess the open hydrated hexagonal crystalline pattern (type-B) with apparent amylose content ranging from 20.117 ± 0.017 gKg-1 for Darknight yam to 23.001 ± 0.058 gKg-1 for Barbados. The starch granules were found to display an asymmetric “Maltese” cross upon exposure to...

Author(s): Riley, C. K. , Wheatley, A. O., and Asemota, H. N.,

September 2006

On-farm storage studies on sorghum and chickpea in Eritrea

On-farm storage studies were conducted in Teraemini, Ashera and Hamelmalo sub-zones in Eritrea during 2004/2005, with the objective of finding the damages caused by storage pests under farmers’ situations. The studies were conducted on chickpea and sorghum and the treatments used were sand, small grain (taff, Eragrostis tef), vegetable oil and chemical (Malathox 1%). Data were collected every month on the number...

Author(s): Adugna Haile

September 2006

Effect of different rates and methods of benomyl and mancozeb application on delay in senescence and grain yield of cowpea (Vigna unguiculata (L) Walp) under different cropping season

Field assessment of different rates and methods of three fungicide applications on delay in senescence (DS) and grain yield of cowpea during the early and late cropping season of 1999 respectively was conducted. The benomyl treatment applied via the combination of seed and foliar methods at the highest rate of 0.75 + 0.75kg a.i/ha gave the highest percentage delay in senescence (100%) as well as highest grain yield of...

Author(s): O. Akinbo, S. A. Ogunbayo, K. A. Sanni and A.O. Ojo

September 2006

Effect of feed cycling on specific growth rate, condition factor and RNA/DNA ratio of Labeo rohita

A study was conducted to evaluate the effect of feed cycling on specific growth rate, condition factor and RNA/DNA ratio of Labeo rohita.  Fingerling L. rohita were randomly collected from Qadria Fish Farm and Hatchery, Multan, Pakistan and divided into control, 5 days and 10 days feed cycling groups.  Specific growth rate (% g day-1), body composition, condition factor, and RNA/DNA ratio of individual fish...

Author(s): Muhammad Ali, Rehana Iqbal, Shabbir Ahmad Rana, Mohammad Athar, and Furhan Iqbal

September 2006

Effects of honey-supplemented diet on the parasitemia and some enzymes of Trypanosoma brucei-infected rats

Trypanosoma brucei-infected rats were treated with natural honey and honey-supplemented diet at three days before infection (prophylaxis), early and late stages of infection. Proximate percentage composition of the honey was 71.19±0.90% carbohydrate, 3.28±0.05% protein and 10.68±0.27% lipid among others. Prophylactic treatment with natural honey extended the lifespan of infected rats by 13 extra...

Author(s): J. T. Ekanem, O. R. Majolagbe, F. A. Sulaiman and N. O. Muhammad

September 2006

Antibacterial susceptibility of some urinary tract pathogens to commonly used antibiotics

Urinary tract infection represents one of the most common diseases encountered in medical practice today and occurring from the neonate to the geriatric age group. Despite the widespread availability of antibiotics, it remains the most common bacterial infection in the human being. A total of 174 urine samples were analyzed for isolation and identification, 68 found to be significant bacteriuria withEscherichia...

Author(s): D.H. Tambekar, D.V. Dhanorkar, S.R. Gulhane, V.K. Khandelwal and M.N. Dudhane

September 2006

Pharmacological justification for the ethnomedicinal use of Amblygonocarpus andongensis stem bark in pain relief

Amblygonocarpus andongensis (family: Mimosaceae) is ethnomedicinally used in Northern Nigeria for the relief of pain. The methanolic extract of the plant stem bark was evaluated for anti-nociceptive activity using acetic acid-induced writhing model and formalin test in mice. Anti-inflammatory property was tested on egg albumin-induced oedema in rats while agar dilution method was used for antimicrobial effect. The...

Author(s): F. C. Nwinyi, G. A. Ajoku, S. O. Aniagu, D. Kubmarawa, N. Enwerem, S. Dzarma and U.S. Inyang

September 2006

Effects of experimental Neisseria meningitis W135 infection on serotoninergic parameters in mice

This study investigated the effects of Neisseria menigitidis W135 infection via intraperitoneal route on plasma free tryptophan concentration, brain serotonin and 5-hydroxyindole acetic acid (5-HIAA) levels in albino mice fed normal and tryptophan-enriched diets. The kinetics of appearance of viable bacteria in the blood, brain and liver following infection were also investigated. The serotoninergic parameters...

Author(s): Iwalokun, B.A., Uwah A., Akpe, C., Gbadegeshin, Y., Matty, F., Ojo, O.O., Badaru, O.  and Ariyo, F.

September 2006

Performance and digestibility of weaner rabbits fed graded levels of soybean cheese waste/maize offal diet and brachiaria grass hay

Weaner crossbred rabbits were allocated to five treatment groups in a completely randomized design. The treatments consisted of 100, 75, 50 and 25% levels of soybean cheese waste/maize offal diet (SBW). 100% rabbit meal served as control. Each rabbit received chopped Bracharia decumbens hay ad libitum. Water was offered ad libitum. Concentrate and hay were offered in separate feeders. Rabbits on the...

Author(s): G. T. Iyeghe-Erakpotobor, C. U Osuhor and T. S. Olugbemi

September 2006

Effect of inorganic fertilizer on microbial utilization of hydrocarbons on oil contaminated soil

The effect of inorganic fertilizer (NPK agricultural fertilizer) on biodegradation of soil (5 kg) contaminated with crude oil (50 g) was investigated for seven weeks. Four different test options were prepared namely; (i) 100 g of contaminated soil + 30 g of NPK agricultural fertilizer; (ii) 100 g of contaminated soil + 60 g of NPK agricultural fertilizer; (iii) 100 g of contaminated soil + 90 g of NPK agricultural...

Author(s): Ubochi, K. C., Ibekwe, V. I. and Ezeji, E. U.