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: 30 October 2012; 11(87)

October 2012

Safety of nanofood: A review

  Introduction of genetically modified (GM) foods generated a lot of controversy few years back, now it is the turn of nanofoods. There has been debate on the safety of foods that have been produced directly or indirectly with nanomaterials. Nanoparticles or nanotechnology procedures may be used to make food products, food additives, seeds and food packaging materials to give rise to a new and novel nanofood....

Author(s):   Oluwatosin Ademola Ijabadeniyi  

October 2012

Improvement of faba bean (Vicia faba L.) yield and quality through biotechnological approach: A review

  Faba bean (Vicia faba L.), an old-world grain legume, is grown approximately in 3 m/ha area world-wide from temperate, tropical to hot arid conditions. It is such a wonderful legume that it can excel even under adverse soil conditions; acidic or saline alkaline (pH 4.5 to 9.0). In favourable conditions, it gives very high yields, but low yield may result from biotic and abiotic stress. In India, it is...

Author(s):   Anil Kumar Singh, B. P. Bhatt, Ashutosh Upadhyaya, Santosh Kumar,  P. K. Sundaram, Brijesh Kumar Singh, Naresh Chandra and R. C. Bharati  

October 2012

Genetic diversity analysis of DRB3.2 in domestic yak (Bos grunniens) in Qinghai-Tibetan Plateau

  DRB3 gene has been extensively evaluated as a candidate marker for association with many bovine disease and immunological traits. A hemi-nested polymerase chain reaction-sequencing method was used to investigate the polymorphisms of DRB3.2 gene from 209 individuals in three different domestic yak (Bos grunniens) populations (62 Tianzhu white yaks, 78 Gannan yaks and 69 Datong yaks) from the Qinghai-Tibetan...

Author(s):   Pengjia Bao, Ping Yan, Chunnian Liang, Xian Guo, Jie Pei, Min Chuand Xinshu Zhu  

October 2012

Morphological and molecular characterization of L-methioninase producing Aspergillus species

  Six species of L-methioninase producing Aspergillus species, isolated from Egyptian soil, were selected for comprehensive morphotypic and molecular characterization. Based on morphological and physiological features, these isolates were identified asAspergillus flavipes, Aspergillus carneus, Aspergillus flavus, Aspergillus tamari,Aspergillus oryzae, and Aspergillus parasiticus....

Author(s):   Rashad M. Kebeish and Ashraf S. El-Sayed  

October 2012

Genetic diversity of Kenyan Prosopis populations based on random amplified polymorphic DNA markers

  Several Prosopis species and provenances were introduced in Kenya, either as a single event or repeatedly. To date, naturally established Prosopis populations are described as pure species depending on site, despite the aforementioned introduction of several species within some sites. To determine whether naturally established stands consist of a single or mixture of species, six...

Author(s):   Gabriel M. Muturi, Joseph M. Machua, Godefridus M. J. Mohren, Lourens Poorter,  John M. Gicheru and Lorna W. Maina  

October 2012

Assessment of somaclonal variation in sugarcane

  A study was conducted from 2006 to 2008 to assess the variability arising from callus regeneration and its vegetative transmission in a subtropical variety of sugarcane, CoJ 64. Qualitative and quantitative characters were evaluated in the field at maturity in each of the 3 years at the same location. The frequencies of variants were compared to those found in the original variety. The tissue culture process...

Author(s):   V. P. Sobhakumari  

October 2012

Analysis of genetic diversity in mango (Mangifera indica L.) using isozymetic polymorphism

  The isozymetic study was designed for assessing the genetic diversity among the selected mango cultivars/genotype available in Bangladesh. All the isozymes, used in the present study showed polymorphism for mango. A total of 25 different electrophoretic zymotypes were observed for three isozymes studied. Glutamate oxaloacetate transaminase, malate dehydrogenase and peroxidase analysis possessed 8, 10 and...

Author(s):   Majumder, D. A. N., Hassan, L., Rahim M. A. and Kabir, M. A.  

October 2012

Reaction of melon (Cucumis melo L.) cultivars to soil-borne plant pathogenic fungi in Iran

  The fungi Macrophomina phaseolina (Tassi), Monosporascus cannonballus (Pollack and Uecker) and Rhizoctonia solani (Kuhn) are responsible for significant destruction and melon crop losses in the Sistan region of Iran. In this study, eighteen melon cultivars were screened for resistance to these pathogens under greenhouse conditions twice. The melon cultivars were...

Author(s):   Mohammad Salari, Naser Panjehkeh, Zahra Nasirpoor and Javad Abkhoo  

October 2012

Comparative evaluation of the physicochemical composition and microbial quality of seven different water sources used in processing root and tuber crops in Umudike, Nigeria

  The physicochemical composition and microbial quality of 7 different water sources (Umudike ukwu bore hole (B5), Umuariaga borehole (B3), Nidoro spring water (S2), Umudike bore hole (B4), Umudike school borehole A (B7), Umudike school bore hole B (B6) and Ahiaeke bore hole (B9) used for root and tuber crop processing in Umudike, Nigeria were investigated using standard techniques. The chloride, sulphate,...

Author(s):   Amajor, J.U., Eleazu, C.O., Amajor, E.E., Ironua, C.F. and Nwosu, P.  

October 2012

Production of mycelium and blastospores of Hirsutella sp. in submerged culture

  Hirsutella sp. was grown in four liquid media containing either casamino acids, corn steep liquor, collagen peptone or casein peptone. These media were inoculated with a 7 day-old culture of mycelia and blastospores of Hirsutella sp. and the cultures incubated with shaking at 250 rpm at 26°C. The media containing corn steep liquor, casamino acids or collagen peptone produced abundant...

Author(s):   Oscar Romero-Rangel, María Guadalupe Maldonado-Blanco, Cynthia Carolina Aguilar-López, Myriam Elías-Santos, Raúl Rodríguez-Guerra and José Isabel López-Arroyo  

October 2012

Potential of a polyculture of Arundo donax and Typha latifolia for growth and phytotreatment of wastewater pollution

  Arundo donax and Typha latifolia are emergent macrophyte species that commonly reproduce in humid areas during warm months. This study investigated the growth and pollutant removal capacity of these two species planted in polyculture in a vertical flow filter bed for rural wastewater treatment. Plant shoot height was monitored and biomass production and nutrient uptake were assessed. Water...

Author(s):   Soulwène Kouki, Neila Saidi, Asma Ben Rajeb and Fadhel M’hiri  

October 2012

The influence of the combined microwave power and hot air ventilation on the drying kinetics and colour quality of tomato slices

  Tomato is one of the most important fruit used as an ingredient in different foods in food processing and preparation. Fresh tomato consists of about 91% of moisture. Tomato has to pass through all three rates of drying (constant, first and second falling rate period) during drying, using hot air ventilation, and requires prolonged time with much of quality changes. In this study, microwave assisted hot air...

Author(s):   T. Seyoum Workneh and M. Olanrewaju Oke  

October 2012

Oxidative stress pattern in hepatitis C patients co-infected with schistosomiasis

  This study was designed to investigate the role of hepatitis C virus (HCV)-induced oxidative stress in the pathogenesis of the disease with the measurement of tumor necrosis factor (TNF-a) and super oxide dismutase (SOD). Eighty patients from Hepatology Unit, Faculty of Medicine, Ain Shams University, were investigated. Thirty patients with bilharzial HCV and 30 patients with non-bilharzial HCV...

Author(s):   Kholoud S. Ramadan, Olfat A. Khalil, Amal H. Hamza and Safinaz E. El-Toukhy,  

October 2012

Effects of different levels of dried tomato pomace on performance, egg quality and serum metabolites of laying hens

  A study was conducted to investigate the effects of dietary inclusion of dried tomato pomace (DTP) on performance, egg quality and serum metabolites in laying hens. A total of one hundred and forty four LOHMANN LSL-LITE hens were randomly allocated into 4 groups consisting of 6 replicates, each replicate has 6 birds. Birds were fed either a basal diet or the basal diet supplemented with 150, 170 or 190 g/kg...

Author(s):   Mohammad Hamed Salajegheh, Shahab Ghazi, Reza Mahdavi and Omid Mozafari  

October 2012

Main and interaction effects of extrusion temperature and usage level of full fat soybean on performance and blood metabolites of broiler chickens

  The extruded full fat soybean (EFFSB) may be used in diet to satisfy the energy and protein requirements of fast growing broiler chickens. The main and interaction effects of three extrusion temperatures and two dietary levels of FFSB were studied on the performance, physiological enzymes and blood metabolites of broiler chickens from 0 to 42 days. The batches of full fat soybean (FFSB) were wet extruded at...

Author(s):   S. Zhaleh, A. Golian, A. Hassanabadi and S.A. Mirghelenj