African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12294

Table of Content: 15 March, 2017; 16(11)

March 2017

Characterization of actinobacteria from the semiarid region, and their antagonistic effect on strains of rhizobia

The actinobacteria are the most abundant bacterial group in the soil, where they present different characteristics and antagonistic effects on other microorganisms. The objectives of this study were to characterize and evaluate the antagonistic effect of actinobacteria from the semiarid region on rhizobia from the same climatic region. Tests were performed to observe chromogenic and micro-morphological characteristics,...

Author(s): José Vinícius Leite Lima⊃, Suzana Cláudia Silveira Martins⊃, Katia Aparecida de Siqueira⊃, Marcos Antônio Soares⊃ and Claudia Miranda Martins⊃

March 2017

Post-treatment of municipal sewer in shallow polishing ponds

This work aims to investigate the influence of polishing ponds (PP) depth on the post-treatment of sanitary sewers. Two treatment systems were designed and monitored. One system was an upflow anaerobic sludge blanket (UASB) rector and intermittent flow sand filter; followed by a PP of 0.20 m depth with low superficial application rate (24.9 kgBOD5.ha-1.day-1), high sunlight incidence (597 Wm-2) and enough biological...

Author(s): Tales Abreu Tavares de Sousa, Wilton Silva Lopes, Israel Nunes Henrique, Valderi Duarte Leite and José Tavares de Sousa

March 2017

Effect of two different habitats on some primary and secondary phytochemicals of Miswak (Salvadora persica L.)

Salvadora persica is a popular medicinal plant in the Middle East countries. It is well adapted to a wide range of habitats. In this study we have compared the effect of two different habitats (Al-ahsabah valley and Shada Mountain) in Al-Baha City, south west of Saudi Arabia on the content of some primary and secondary metabolites in S. persica. The results show that soil texture, soil moisture and organic matter...

Author(s): Amal Ahmed Mohammed Al-Ghamdi and Manal El-Zohri,

March 2017

Nested polymerase chain reaction (nPCR) based diagnosis of bovine leukemia virus in Panama

The bovine leukemia virus is an exogenous retrovirus that causes enzootic bovine leukosis. The aim of this study was to apply and compare a diagnostic test in an outbreak of bovine leukemia virus by nested polymerase chain reaction (PCR)  in a core conservation of native cattle Guaymí. From the results obtained by the three techniques used, the agar gel immunodiffusion (AGID) test detected 33 positive...

Author(s): Axel Villalobos-Cortés, Selma Franco, Rita Gonzalez and Marcelino Jaén

March 2017

Proteins patterns of eight genera of the Asteraceae family

Asteraceae family grows as wild plants in the eastern province of Saudi Arabia near the Gulf coast with prevalent high humidity coupled with more moderate temperatures. Eight genera were collected during the flowering season to study genetic diversity according to protein patterns for each plant. The protein patterns showed different numbers of bands, concentrations, molecular weight and intensity. Two common bands were...

Author(s): Mona S. Al-Ahmadi

March 2017

Evaluation of cytotoxic and mutagenic effects of two artificial sweeteners by using eukaryotic test systems

Considering the vast use of sweeteners by the Brazilian population and the constant need for toxicological studies of food additives, this study aimed to evaluate the cytotoxic and mutagenic potentials of the sodium saccharin and/or sodium cyclamate sweeteners in plant (Allium cepa) and animal (Mus musculus) test systems based on concentrations permitted by the Brazilian laws. In A. cepa, both the sweeteners...

Author(s): Victor Alves de Oliveira, Virleny Maria alves de Oliveira, Thayse Wilma Nogueira de Oliveira, Andressa Nathanna Castro Damasceno, Charles Emanuel de Oliveira Silva, Stella Regina Arcanjo Medeiros, Bruno Moreira Soares, Felipe Cavalcanti Carneiro da Silva, Raí Pablo Sousa de Aguiar, Muhammad Torequl  Islam, Ana Amélia de Carvalho Melo-Cavalcante, Ana Paula Peron and João Marcelo de Castro e Sousa