African Journal of

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

Table of Content: 23 October 2012; 11(85)

October 2012

A review on the integrated agro-technology of papaya fruit

  The aim of this review was first to explore the effect of different pre-harvest factors affecting the quality of papaya including genetic factors, climatic conditions, cultural practices on post-harvest quality of the papaya fruit. Post-harvest physiology of papaya in terms of its respiration, ethylene production and sensitivity and transpiration was reviewed. Post-harvest handling and factors affecting...

Author(s):   T.S. Workneh, M. Azene and S. Z. Tesfay    

October 2012

Isolation and characterization of resistant gene analogs in cassava, wild Manihot species, and castor bean (Ricinus communis)

  Cassava, Manihot esculenta, is one of the major food crops in sub-Saharan Africa (SSA) providing the bulk of dietary calories to hundreds of millions of households. Two viral diseases, namely cassava mosaic disease (CMD) and cassava brown streak disease (CBSD) pose a serious threat to cassava production. The emergence of new virus species and strains that overcome the existing resistant/tolerant...

Author(s):   Melaku Gedil, Manjula Kumar and David Igwe  

October 2012

Genetic diversity analysis of stress tolerant rice (Oryza sativa L.)

  Fourteen rice genotypes, composed of six salt tolerant, three submergence tolerant, two drought tolerant genotypes along with three high yielding genotypes, released from Bangladesh Rice Research Institute (BRRI) were used for genetic diversity analysis using 40 simple sequence repeats (SSR) markers. All of the used SSR markers were found polymorphic among the 14 rice genotypes. The amplicon size...

Author(s):   A. S. M. Faridul Islam, M. Raihan Ali, Glenn B. Gregorio and M. Rafiqul Islam  

October 2012

Ranavirus (family Iridoviridae) detection by polymerase chain reaction (PCR) in Chinese giant salamander (Andrias davidianus, Blanchard, 1871), China

  A disease in farmed Chinese giant salamander (Andrias davidianus) was a common event, being an economically important threat for Chinese farms. Based on the clinical signs, epizootiology and pathogens belonging to the genus, Ranavirus was suspected as the possible etiology. Although in a cultured Chinese giant salamander (Andrias davidianus) farm in Hanzhong County, Shanxi Province, China, a...

Author(s):   Z. Y. Zhou, Y. Geng, S. Y. Ren, K. Y. Wang, X. L. Huang, D. F. Chen,  X. X. Liu and W. M. Lai  

October 2012

Assessment of endophytic fungi cultural filtrate on soybean seed germination

  Soybean seeds have high amount of isoflavones but its germination is often confronted with a variety of environmental problems resulting in low germination rate and growth. To overcome this in eco-friendly manner, we investigated the influence of cultural filtrate (CF) of gibberellins-producing endophytic fungi on soybean seed germination. Three endophytic fungi namely: Chrysosporium...

Author(s):   Muhammad Waqas, Abdul Latif Khan, Muhammad Hamayun, Muhammad Kamran, Sang-Mo Kang, Yoon-Ha Kim and In-Jung Lee  

October 2012

Identification of pesticide-degrading Pseudomonas strains as poly-β-hydroxybutyrate producers

  Polyhydroxybutyrate (PHB) is an ecological promising substitute for polypropylene because it is biocompatible, biodegradable and can be produced by renewable sources. This study investigated PHB accumulation on pesticide-degradingPseudomonas. 14 strains of pesticide-degrading Pseudomonas isolated from subtropical lowland soil in southern Brazil were analyzed using optical microscopy. Lipid...

Author(s):   Ane Gerber Crochemore, Maria Laura Turino Mattos, Claire Tondo Vendruscolo, Luis Antonio Suita de Castro and Angelita da Silveira Moreira  

October 2012

Characterization of Indian native isolates of Trichoderma spp. and assessment of their bio-control efficiency against plant pathogens

  A study was intended to corroborate the positive relatedness of molecular and morphological characters with antagonistic ability of Trichoderma species. On the basis of morphological and cultural characteristics, the Trichoderma isolates were identified as T. virens (11 isolates), T. asperellum (15), T. harzianum (14) and T....

Author(s):   Prameela Devi, N. Prabhakaran, Deeba Kamil, Pankaj Pandey and Jyoti Lekha Borah  

October 2012

Biodegradation of phenol with immobilized Pseuodomonas putida activated carbon packed bio-filter tower

  Comparative study on adsorption and simultaneous adsorption and biodegradation (SAB) of phenol using Pseuodomonas putida (MTCC 1194) in a biofilter tower packed with fresh granular activated carbon (GAC) or biological activated carbon (BAC) showed 37% higher breakthrough point in case of SAB. Maximum phenol degradation rate in case of SAB was 120 mg/L.h obtained at flow rate of 7.42 ml/min....

Author(s):   A. Ullhyan and U. K. Ghosh  

October 2012

Trace metal concentration and freshness quality of preserved catfish (Clarias gariepinus)

  The freshness quality of fish is altered by enzymatic and microbial activities, necessitating the application of fish preservation technology. This study assessed trace metals concentration and freshness quality of catfish (Clarias gariepinus)preserved by oven-drying, brining/oven drying and smoking. The fish were processed to average moisture contents of 15 ± 5%. Processed fish samples were...

Author(s):   Olatunde, K. A., Bamgbose, O., Arowolo, T. A. and George, F. O. A.  

October 2012

Technological properties of maize tortillas produced by microwave nixtamalization with variable alkalinity

  This research was conducted to determine the quality, physicochemical, textural, compositional, nutritional, viscoamylographic and sensory properties of maize tortillas produced with a Modified tortilla-making process (MTMP) of variable alkalinity (0.125, 0.25 and 0.5% Ca(OH)2 w/w) and compared to the commercial brand MASECAâ. In general, tortillas from MTMP showed higher pH, total color difference...

Author(s):   Méndez-Albores, A., Martínez-Morquecho, R. A., Moreno-Martínez, E. and Vázquez-Durán, A.