African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12212

Table of Content: 5 March, 2014; 13(10)

March 2014

An update on conventional and molecular breeding approaches for improving fiber quality traits in cotton - A review

The cultivated Gossypium spp. represents the most important, natural fibre crop in the world. India is the only country cultivating all the four cultivated species of cotton. Among the Gossypium spp., Gossypium hirsutum is the most cultivated species in many countries. Breeding for high cotton yield is still the primary goal of cotton breeding programs, but improving fibre quality...

Author(s): Kaliyaperumal Ashokkumar, Karuppanasamy Senthil Kumar and Rajasekaran Ravikesavan

March 2014

Optimization of up-flow anaerobic sludge blanket reactor for treatment of composite fermentation and distillation wastewater

Optimization of up-flow anaerobic sludge blanket (UASB) reactor operation for treatment of a composite fermentation and distillation wastewater was achieved using a locally available thickened municipal sludge instead of imported commercial anaerobic granulated sludge. Over the first 12 days, a fed batch start-up operation was maintained and anaerobic stable sludge granules with 11.2% of extra cellular polymers (ECP)...

Author(s): G. A. Amin and L. Vriens

March 2014

Genetic diversity of sweet potatoes collection from Northeastern Brazil

The sweet potato, Ipomoea batatas (L.) Lam has its origin in Tropical America. In Sergipe State (Brazil), its production is very important, and to explore its potential in local agriculture in the State, the Embrapa Coastal Tableland created a collection with 52 accessions located in Umbaúba City. Some accessions were from germplasm belonging to Embrapa vegetables and others from local farmers of Sergipe. Here,...

Author(s): Ana Veruska Cruz da Silva, Luzia Nilda Tabosa Andrade, Allívia Rouse Carregosa Rabbani, Maria Urbana Corrêa Nunes and Lucas Rezende Pinheiro

March 2014

Evaluation of genetic diversity in different genotypes of Gerbera jamesonii Bolus using random amplified polymorphic DNA (RAPD) markers

Genetic diversity within Gerbera jamesonii Bolus is the key to genetic improvement of this important ornamental species. In the present study, genetic diversity of 12 accessions of gerbera was assessed through random amplified polymorphic DNA (RAPD) markers. A total of 40 RAPD primers belonging to OPD, OPE, OPF and OPG series of universal primers set were used out of which, only 10 primers produced clear,...

Author(s): Priyanka Prajapati, Alka Singh, N. L. Patel, Diwakar Singh and Vishal Srivastav

March 2014

Laboratory evaluation of freshly prepared juice from garlic (Allium sativum L.) Liliaceae as protectants against the maize weevil, Sitophilus zeamais (Motsch.) [Coleoptera: Curculionidae]

Fresh prepared garlic (Allium sativum L.) juice, containing the antimicrobial allicin, was evaluated as a possible grain protectant against the maize weevil, Sitophilus zeamais (Motsch.). Each experiment was set out in completely randomized design (CRD) with four replications and a control treatment. Adult mortality and percentage weight loss were investigated. There was an observed increase in adult mortality following...

Author(s): Ifeanyi D. Nwachukwu, and Elechi F. Asawalam

March 2014

Total phenols, flavonoids, anthocyanins, ascorbic acid contents and antioxidant activity of Rhamnus kurdica Boiss for flower and leaves in flowering and pre-flowering stages

The antioxidant capability, total phenol, total flavonoid, anthocyanins, ascorbic acid contents, and reducing power contents of polar and non-polar extracts for flower and leaves in two stages of growth for Rhamnus kurdica Boiss in flowering were evaluated in this work. The polar extraction of flower of R. kurdica Boiss had a higher total phenolic content as well as antioxidant activity compared to that of the other...

Author(s): Mohammad Bagher Gholivand and Marzieh Piryaei

March 2014

Studies on serum macro and micro minerals status in repeat breeder and normal cyclic Nili-Ravi buffaloes and their treatment strategies

The present study was carried out with the objective to know the calcium (Ca), inorganic phosphorus (P), magnesium (Mg), copper (Cu), iron (Fe) and zinc (Zn) concentrations in serum of repeat breeder and normal cyclic buffaloes during oestrus. On the day of estrus, blood samples were collected from 35 buffaloes with a history of repeat breeding (RB) and 35 normal cycling (NC) buffaloes for mineral estimation. In the...

Author(s): Muhammad Saleem Akhtar, Abdul AsimFarooq, Laeeq AkbarLodhi, SayyedAun Muhammad, M. MazharAyaz, Mushtaq Hussain Lashari, Saeed Murtaza, Irtaza Hussain, Muhammad Irshad, Maqbool Hussain and Muhammad AsifRaza

March 2014

Heavy metal, proximate and microbial profile of some selected commercial marine fish collected from two markets in south western Nigeria

The study on the elemental, proximate and microbial composition of fresh samples of Scomber scombrus, Gadus macrocephalus, Saclina pilchradus and Jack mackerel was determined to gain the knowledge of the risk and benefits associated with indiscriminate consumption of marine fishes. Wet digestion was done for the samples and was analyzed for minerals, heavy metals and microorganisms. The species examined contained...

Author(s): Ogundiran, M. A., Adewoye, S. O., Ayandiran, T. A. and Dahunsi, S. O.

March 2014

A modeling using the maximum growth capacity of Hantzschia amphioxys in the Homa Lagoon

Homa lagoon found in the Izmir bay, Aegean Sea, is important because it is the last lagoon in which fishing activities are carried out. Hantzschia amphioxys species, on which this study was carried on, are benthic diatoms and they are isolated from Homa Lagoon. The Monod equation expressing the nutrient dependency of the growth rates can also be used for carrying capacity (with different parameter values; chl-a max,...

Author(s): Banu Kutlu and Baha Buyukisik

March 2014

The effects of different concentrations of probiotic Saccharomyces cerevisia on growth performance and survival rate of rainbow trout (Oncorhynchus mykiss), fry and resistance against salinity

In the present study, a yeast strain Saccharomyces cerevisia var. elipsoidous, acting as probiotic, was administered to rainbow trout (Oncorhynchus mykiss Walbaum, 1792) fry during a period of 21 days and the effects of the yeast on improvement of growth and resistance against environmental stress were evaluated with respect to fish fed on yeast free feed (control group). The control treatment consisted of a standard...

Author(s): M. Pooramini, A. Kamali, A. Hajimoradloo, M. Alizadeh, R. Ghorbani, R. Hatami and S. Haghparast

March 2014

Effect of cypermethrin toxicity on enzyme activities in the freshwater fish Cyprinus carpio

Cyprinus carpio a freshwater fish, was exposed to lethal concentration (7.5 µg/L) for one, three, five, seven and nine days and, sublethal concentration (1.5 µg/L) for 1, 7, 14, 21 and 28 days of cypermethrin, respectively to observe the enzyme activity in functionally three different tissues; that is, muscle, gill and liver. The activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT)...

Author(s): Khalid Abdullah Al-Ghanim

March 2014

Fumaric acid production by Rhizopus oryzae and its facilitated extraction via organic liquid membrane

Microbial fermentations are efficient alternatives to different manufacturing practices being followed for industrially important compounds like organic acids, food and pharmaceutically active products. However, the attractions offered by microbial processes are overshadowed by the costs associated with downstream processing involved in the recovery of pure products from such systems. Reduction of the cost in terms of...

Author(s): Yadvaindera Sood, Jayati Dhawan and Anupreet Kaur

March 2014

Microarray based comparative genome-wide expression profiling of major subtypes of leukemia

The uncontrolled proliferation of hematopoietic cells with no capacity to differentiate into mature blood cells leads to leukemia. Though considerable amount of work has been done in understanding the molecular basis and gene expression profiles of hematologic malignancies viz., chronic lymphocytic leukemia (CLL), chronic myelogenous leukemia (CML), acute lymphocytic leukemia (ALL) and acute myelogenous leukemia (AML),...

Author(s): Harendra Modak, Sujayendra Kulkarni, Suyamindra S. Kulkarni, Prabhanjan Gai, Umesh Hallikeri and Pramod B Gai,

March 2014

Identification and chemical studies of pelagic masses of Sargassum natans (Linnaeus) Gaillon and S. fluitans (Borgessen) Borgesen (brown algae), found offshore in Ondo State, Nigeria

The pelagic seaweed found offshore and negatively impacting fishing activity in Ondo State Nigeria, has been identified to be a mixture of Sargassum natans and Sargassum fluitans which presumably floated from the Sagasso Sea of North Atlantic. In a bid to harness the potential uses of the seaweed biomass, the mixed Sargassum species were analyzed for the proximate composition, some minerals and phytochemical...

Author(s): O. O. Oyesiku and A. Egunyomi

March 2014

Allelotoxicity of Oudneya africana R. Br. aqueous leachate on germination efficiency of Bromus tectorum L. and Triticum aestivum L.

This present study was conducted to investigate the possible allelopathic effect of Oudneya africana (donor species) on Bromus tectorum (weed species) and Triticum aestivum (cv. Sahel1; crop species) through germination bioassay experiment. B. tectorum is a winter annual grass that grows in winter wheat and other crops and in both disturbed and undisturbed grasslands. The effect of O. africana aqueous leachate (OAAL) on...

Author(s): Salhi Nasrine, Salama M. El-Darier and Halilat M. El-Taher