African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12267

Table of Content: 7 September, 2016; 15(36)

September 2016

Ex-vivo evaluation of crab shell chitosan as absorption enhancer in ciprofloxacin tablet formulation

This study was aimed at evaluating crab shell chitosan as absorption enhancer in ciprofloxacin tablet formulation using the ex-vivo model. Six batches of ciprofloxacin tablets containing varying concentrations of crab shell-derived chitosan ranging from 0 to 5% w/w at 1% w/w intervals were produced. Batch CTS-0 containing no chitosan served as the control. The crushing strength, friability, disintegration time,...

Author(s): Emmanuel O. Olorunsola, Timma O. Uwah, Olubunmi J. Olayemi and Unyime B. Etukudo

September 2016

Optimization of somatic embryogenesis procedure for commercial clones of Theobroma cacao L.

The first objective of this study was to assess and optimize somatic embryo production in a genetically diverse range of cacao genotypes. The primary and secondary somatic embryogenesis response of eight promising cacao clones and a positive control was evaluated using modified versions of standard protocols. The second objective was to optimize the efficiency of primary somatic embryogenesis for a commercially...

Author(s): Garcia Claudia, Corrêa Fabio, Findley Seth, Almeida Alex-Alan, Costa Marcio, Motamayor Juan Carlos, Schnell Ray and Marelli Jean-Philippe

September 2016

Physiological responses by Billbergia zebrina (Bromeliaceae) when grown under controlled microenvironmental conditions

Sucrose, the most commonly used carbon source in conventional in vitro culture, and limited air exchange in the culture containers are factors that affect the growth of in vitro-cultured plants. They may induce physiological disorders and decrease the survival rate of plants after transfer to ex vitro conditions. The aim of the present study was to analyze the effects of gas exchange and sucrose concentration on...

Author(s): João Paulo Rodrigues Martins, Veerle Verdoodt, Moacir Pasqual and Maurice De Proft

September 2016

Fruit production and quality of guava ‘Paluma’ as a function of humic substances and soil mulching

The uses of humic substances and organic residues for soil mulching have been more common during last years. This way, an experiment was carried out to evaluate the fruit quality and yield of guava cv. Paluma as a function of humic substances and organic soil mulching in Brazil. The experiment was performed from January 2012 to June 2013 (first trial) and from July to November 2013 (second trial) using a randomized...

Author(s): Leonardo Fonseca da Rocha, Lourival Ferreira Cavalcante, Járisson Cavalcante Nunes, Antônio Gustavo de Luna Souto, Alian Cássio Pereira Cavalcante, Ítalo Herbert Lucena Cavalcante and Walter Esfrain Pereira

September 2016

Growth and physiological aspects of bell pepper (Capsicum annuum) under saline stress and exogenous application of proline

This study aimed to evaluate growth and physiological aspects of ‘All Big’ bell pepper, under saline stress and exogenous application of proline on the leaves. The research was conducted in pots adapted as drainage lysimeters under greenhouse conditions, using sandy-loam eutrophic Regolithic Neosol, in the municipality of Campina Grande-PB, Brazil. The experiment was set in randomized blocks, in order to...

Author(s): Francisco Vanies da Silva Sá, Geovani Soares de Lima, João Batista dos Santos, Hans Raj Gheyi, Lauriane Almeida dos Anjos Soares, Lourival Ferreira Cavalcante, Emanoela Pereira de Paiva and Leandro de Pádua Souza

September 2016

Protective effects of some fruit juices with low-fat diet on rat testis damaged by carbon tetrachloride: A genetic and histological study

Oxidative stress, free radical, lipid peroxidation and antioxidant have become a common expression with most disease and methods for protection. Carbon tetrachloride (CCl4) is an industrial solvent which has destructive effects on a cell while most fruit juices have antioxidant effects. The aim of this study was to investigate the protective role of fruit juice on testis after toxic effect with CCl4 through oxidative...

Author(s): Medhat R. Rehan, Amina M. G. Zedan, Samah A. El-Hashash, Mona A. Farid and Gehan A. El-Shafie

September 2016

Confirmation of antibodies against L-tryptophan-like epitope in human African trypanosomosis serological diagnostic

Antibodies directed against L-tryptophan epitope (WE - W for tryptophan, E for epitope), a constant epitope borne by variant surface glycoproteins (VSG), have been detected in sera of all 152 Human African Trypanosomosis (HAT) patients from Angola. The WE is present in VSG hydrophobic regions of the C terminal domains. In the assay, L-tryptophan was linked to bovine serum albumin (BSA) with glutaraldehyde to synthesize...

Author(s): Silla Semballa,, Romaric Nzoumbou-Boko, , Philippe Holzmuller , Paul Chuchana , Jean-loup Lemesre, Philippe Vincendeau, Pierrette Courtois, Sylvie Daulouède and Philippe Truc,

September 2016

Evaluation of phenolic compounds of two Lygeum spartum L. cytotypes

Lygeum spartum represents a natural barrier in the Algerian high plateaus against the advance of sand and the desertification. The plant is of interest due to its tolerance to environmental stress. There are two levels of ploïdy in this species; the diploid cytotype 2n = 16 which is confined in the locality of Ain Benkhllil and the polyploid cytotype 2n = 40 which thrives in semi-arid climates and has a large...

Author(s): Louerrad Yasmina and Kaid-Harche Meriem

September 2016

Sodium hypochlorite sterilization of culture medium in micropropagation of Gerbera hybrida cv. Essandre

Micropropagation requires controlling contamination that might compromise the success of the process. Thermal sterilization is traditionally used; however, costs deriving from equipment acquisition and maintenance render this technique costly. With the purpose of finding an alternative to thermal sterilization, this research aimed at assessing the efficiency and ideal concentration of sodium hypochlorite for...

Author(s): Ana Karolina Pais, Ana Paula da Silva, Joselita Cardoso de Souza, Silvio Lopes Teixeira, Juliana Martins Ribeiro, Ana Rosa Peixoto and Cristiane Domingos da Paz