African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12484

Table of Content: 26 November 2014; 13(48)

November 2014

Addressing the issue of horizontal gene transfer from a diet containing genetically modified components into rat tissues

Genetically modified (GM) food crops are considered to have the potential of providing food security especially in developing countries. Scientists have raised concern over the hazards associated with the consumption of genetically modified organisms (GMOs). One of these hazards, which have great controversy reports, is the possible horizontal gene transfer from GM-food or feed to human or animal tissues. Many...

Author(s): Hanaa A. S. Oraby, Mahrousa M. H. Kandil, Amal A. M. Hassan and Hayam A. Al-Sharawi

November 2014

Screening of Abelmoschus esculentus and Abelmoschus callei cultivars for resistance against okra leaf curl and okra mosaic viral diseases, under field conditions in South Eastern Nigeria

Of all the several factors that limit okra production in West Africa, okra mosaic virus disease (OMVD) and okra leaf curl disease (OLCD) are rank among the most severe. Twenty three (23) Abelmoschus esculentus and Abelmoschus callei cultivars retrieved from the local farmers were screened in the open field for the resistance against OMVD and OLCD over two cropping seasons in Nsukka, South Eastern Nigeria. The degree of...

Author(s): Udengwu Obi Sergius and Dibua Uju Esther

November 2014

Minituber production potential of selected Potato (Solanum tuberosum L.) genotypes in different propagation media

Potato farmers in Malawi and other developing countries lack healthy and quality potato seed. This is mainly due to limited seed multiplication programmes to provide farmers with clean potato seed. A study to evaluate minituber production potential for selected genotypes in different media types would assist in planning for future selection of good high yielding varieties. It will also assist in planning for rapid seed...

Author(s): Sibongile C. Zimba, Joyce P. Njoloma, Jacinta A. Nyaika, Weston F. Mwase, Moses F. Maliro, James M. Bokosi and Moses B. Kwapata

November 2014

In vitro propagation of Ethiopian mustard (Brassica carinata A. BRAUN)

Brassica carinata (A. Braun) is an amphi-diploid species that originated from interspecific hybridization between Brassica nigra and Brassica oleracea in the highlands of Ethiopia. The crop has many desirable agronomic traits but with oil quality constraints like high erucic acid and glucosinolate contents. In this study, two genotypes and two types of explants were tested for callus induction, shoot and root...

Author(s): Getachew Tafere Abrha, Firew Mekbib and Belayneh Admassu

November 2014

Optimization of extracellular polysaccharide production in Halobacillus trueperi AJSK using response surface methodology

The present study was conducted to optimize the media composition through response surface methodology (RSM) for extracellular polysaccharide (EPS) production in Halobacillus trueperi AJSK strain isolated from the salt pan. Halobacillus trueperi was identified with morphological, biochemical characteristics as well as 16S rRNA gene sequencing method. Production medium was optimized through central composite design. In...

Author(s): Jeganathan Arun, Ramamoorthy Sathishkumar and Thillaichidambaram Muneeswaran

November 2014

Characterisation and evaluation of the efficiency of petroleum degrading bacteria isolated from soils around the oil exploration areas in western Uganda

Contamination with petroleum and its products is an environmental threat in oil producing countries. Microbes have been used to clean up petroleum contaminated environments, which has been demonstrated to be an appropriate and more practical alternative compared to the mechanical and chemical techniques. In this study, crude oil degrading indigenous bacteria were isolated from soils around the oil exploration sites in...

Author(s): Andrew Wedulo, David Kalenzi Atuhaire, Sylvester Ochwo, Vincent Muwanika, Abel John Julian Rwendeire and Jesca Lukanga Nakavuma

November 2014

Isolation and partial characterization of the active metabolite of ascidian, Polyclinum madrasensis from the Palk Bay Region, Southeast coast of India

Ascidians are rich source of bioactive agents which could be used for novel antimicrobial drugs. The present investigation inspects the antibacterial potential of ascidian, Polyclinum madrasensis collected from Mandapam, the Palk Bay region, Southeast coast of India. The crude extracts were tested for inhibition of bacterial growth against human pathogens.  Antibacterial assay was carried out by agar well diffusion...

Author(s): Kathirvel Iyappan and Gnanakkan Ananthan