African Journal of
Biotechnology

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

Table of Content: 11 December 2012; 11(99)

December 2012

Cytotoxicity of chlopyrifos and cypermethrin: The ameliorative effects of antioxidants

  The present paper reviews the mechanism underlying chlorpyrifos and cypermethrin poisoning. It explains the mechanism of action of chlopyrifos and cypermethrin and the role of oxidative stress. It sheds light on the interaction between chlopyrifos and cypermethrin as observed in many cocktails of pesticide combinations today. It also explains the adverse health effects of pesticides and some antioxidants...

Author(s): S. B. Idris, S. F Ambali and J. O. Ayo

December 2012

Genetic diversity of maize genotypes on the basis of morpho-physiological and simple sequence repeat (SSR) markers

In this investigation, an attempt was made to assess the genetic diversity among 91 maize (Zea mays L.) genotypes using morpho-physiological and molecular markers. Variability was observed for six morpho-physiological traits namely, SPAD chlorophyll meter reading, canopy temperature, plant height, yield per plant, fodder yield and plant biomass as well as with simple sequence repeat (SSR) markers. All the...

Author(s): Ashish Kumar, Arunita Rakshit, Naresh. K. Mangilipelli, Y. Varalaxmi, T. Vijayalakshmi, Jainender, M. Vanaja, S. K. Yadav, B. Venkateswarlu, and M. Maheswari

December 2012

Characterization of LeCOP1 gene in Lycopersicon esculentum treated with various abiotic and oxidative stresses

  A full-length cDNA of LeCOP1 was isolated from tomato (Lycopersicon esculentum). Phylogenetic analysis based on the deduced amino acid sequence of LeCOP1 cDNA revealed high sequence similarity to COP1 protein in Ipomoea nil (84% identity) and inArabidopsis (77%). LeCOP1 shared high sequence identity with a hypothetical protein in Vitis vinifera and E3...

Author(s): Yuxin Yang and Jia Guo

December 2012

Effect of growth stages on phenolics content and antioxidant activities of shoots in sweet marjoram (Origanum majorana L.) varieties under salt stress

  We investigated the contributions of salinity and development stage on total polyphenols, flavonoids, condensed tannins contents, phenolic content, 1,1-diphenyl-2-picrylhydrazyl (DPPH) and superoxide scavenging activities at three phenolic stages: early vegetative stage (EVS), late or prefloral vegetative (LVS) stage and flowering stage (FS). The total phenolic, flavonoids and condensed tannins contents were...

Author(s):   O. Baâtour, I. Tarchoun, N. Nasri, R. Kaddour, J. Harrathi, E. Drawi, Mouhiba, Ben Nasri-Ayachi, B. Marzouk and M. Lachaâl

December 2012

Detection and molecular characterization of vancomycin resistant Staphylococcus aureus from clinical isolates

  Until now, few strains of vancomycin resistant Staphylococcus aureus (VRSA) have been reported worldwide. The disk diffusion method for determination of vancomycin sensitivity frequently misclassifies intermediately susceptible isolates to fully susceptible. However, non-automated minimum inhibitory concentration (MIC) detection methods are the gold standards. In the present study, 439...

Author(s): Abu Shady, H. M., El-Essawy, A. K., Salama, M. S. and El-Ayesh, A. M.

December 2012

Changes in aroma composition of blackberry wine during fermentation process

  The study aimed at investigating the influence of fermentation (primary and secondary) on aroma composition of blackberry wine. Gas chromatography-mass spectrometry (GC-MS) was applied to quantify the compounds relevant to sparkling wine aroma. Investigation on this study revealed that a number of aroma components in raw material (55 in numbers), raw wine (54 in numbers), and aging wine (50 in...

Author(s): Yuning Wang,#, Pengxia Li,#, Naresh Kumar Singh, Ting Shen, Huali Hu, Zhiqiang Li, and Yancun Zhao,

December 2012

Metal analyses of ash derived alkalis from banana and plantain peels (Musa spp.) in soap making

  The objective of this work was to determine the metal content of plantain and banana peels ash derived alkali and the possibility of using it as alternate and cheap source of alkali in soap industry. This was done by ashing the peels and dissolving it in de-ionised water to achieve the corresponding hydroxides with pH above 12. The solution was then analyzed using Atomic Absorption Spectroscopy (AAS). The...

Author(s): I. Oluremi Olabanji, E. Ayodele Oluyemi and O. Solomon Ajayi

December 2012

Continuous positive airway pressure and body position alter lung clearance of the radiopharmaceutical 99mtechnetium-diethylenetriaminepentaacetic acid (99mTc-DTPA)

  The purpose of this investigation was to evaluate the pulmonary clearance rate of99mtechnetium-diethylenetriaminepentaacetic acid (99mTc-DTPA) through the use ofcontinuous positive airway pressure (CPAP) in different postures. It was a quasi-experimental study involving 36 healthy individuals with normal spirometry. 99mTc-DTPA, as aerosol, was nebulized for 3 min with the individual in a...

Author(s): Dulciane N. Paiva, Paulo R. Masiero, Bernardo L. Spiro, Renan T. Jost, Isabella M. Albuquerque, Dannuey M. Cardoso, Armele F. D. Andrade, Sotiris Missailidis, Sebastião D. Santos-Filho, Mario Bernardo-Filho, Marika Bajcand Sérgio S. Menna-Barreto

December 2012

Isolation of entomopathogenic nematodes and control of Phyllophaga vetula Horn in Oaxaca, Mexico

  This study aimed to isolate native entomopathogenic nematodes (EPN) in the Central Valleys of Oaxaca and to determine their potential for control of white grub (Phyllophaga vetula Horn). Fifty-five (55) soil samples were collected in 13 communities in the period August to October 2008 and 29.1% of these were found positive for EPN. Five isolates were selected for their apparent pathogenicity to third...

Author(s):   Girón-Pablo S., Ruiz-Vega J., Pérez-Pacheco R., Sánchez-García J. A. and Aquino-Bolaños T.