African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12353

Table of Content: 7 October 2015; 14(40)

October 2015

Analysis of bioactive chemical components of two medicinal plants (Coriandrum sativum and Melia azedarach) leaves using gas chromatography-mass spectrometry (GC-MS)

The main objective of this study was to determine the phytochemical composition in the leaves of Coriandrum sativum, using methanolic extraction and report the main functional components by using IR technique. The phytochemical compounds in the extract were then screened by GC-MS method. Seven bioactive phytochemical compounds were identified in the methanolic extract of C. sativum: 1,6-octadien-3-ol, 3,7-dimethyl,...

Author(s): Ali Hussein Al-Marzoqi, Imad Hadi Hameed and Salah Ali Idan

October 2015

In vitro regeneration of Calophyllum brasiliense Cambess: A valuable medicinal tree

Calophyllum brasiliense (Calophyllaceae) is a medicinal tree known mainly for producing calanolides, secondary metabolites against HIV-1 reverse transcriptase. This wild plant is listed as threatened and despite its outstanding medicinal value, no studies have been conducted on its propagation or preservation. This study standardized a procedure for the micropropagation of C. brasiliense with nodal segments from in...

Author(s): A. Maldonado-Magana, A. Bernabe-Antonio, E. Salcedo-Perez and F. Cruz-Sosa

October 2015

Gene mining a marama bean expressed sequence tags (ESTs) database: Embryonic seed development genes and microsatellite marker identification

Tylosema esculentum (marama bean) is one of the underutilized legumes that have potential to provide protein and fatty acids to ensure food security in dry parts of Southern Africa. In order to establish rapid domestication programs for the plant, it is important to explore the plant’s genome and identify functional genes molecular markers like microsatellites in order to develop molecular tools. With the advent...

Author(s): Emilia N. Sheehama and Percy M. Chimwamurombe

October 2015

Multiploidy occurrence in tomato calli from anther culture

Anther culture has long been used for the production of fully homozygous lines in order to produce, mainly, doubled haploid plants, which are of great interest in plant breeding. For tomato, a recalcitrant species for androgenesis production protocols have not been standardized. It is known that the genotype, anther size, the developmental stage of the microspore, and the medium composition are some factors that can...

Author(s): Sirlei Aparecida Julião, Carlos Roberto Carvalho, Thaís Cristina Ribeiro da Silva and Andréa Dias Koehler

October 2015

Extraction and physicochemical characterization of a potential multifunctional pharma-excipient from crab shell wastes

An efficient and beneficial waste disposal mechanism is highly desired. This study was carried out to extract and characterize a potential multifunctional pharmaceutical excipient from crab shell wastes. Shells of Pachygrapsus mamoratus were obtained from Oron, a coastal town in Akwa Ibom State of Nigeria. Chitin was extracted from the powdered shell by deproteination and demineralization; and chitosan was derived by...

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