African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12496

Table of Content: 31 August 2011; 10(49)

August 2013

A simple method for estimating the convection-dispersion equation parameters of solute transport in agricultural ecosystem

The convection-dispersion equation (CDE) is the classical approach for modeling solute transport in porous media. So, estimating parameters became a key problem in CDE. For statistical method, some problems such as parameter uniqueness are still unsolved because of more factors. Due to the advantage of clear physical concept and unique parameter values, the simple deterministic method became very useful alternatives. In...

Author(s): H.Shi, J.Y.Zheng, H.B.Shao, H.X.Wang and F.Q. Chen,

August 2013

Relationships and variability of agronomic and physiological characters in mungbean

This study was conducted to determine the variability, heritability and correlations among agronomic and physiological characters of mungbean (Vigna radiata (L.) Wilczek) and to identify their direct and indirect effects on seed yield. Fifty six mungbean accessions were evaluated at Suranaree University of Technology Farm, Nakhon Ratchasima, Thailand using a randomized complete block design with 4...

Author(s): Parinya Khajudparn, and Piyada Tantasawat,

August 2013

Antioxidant enzyme activities and lipid peroxidation in corn (Zea mays L.) following soil application of superabsorbent polymer at different fertilizer regimes

In arid and semiarid regions of northern China, there is an increasing interest in using reduced rate of inorganic fertilizer together with water-saving superabsorbent polymer (SAP) for field crop production. Thus, an efficient management of fertilizer and study of metabolic changes in response to SAP application is important for improved production of corn. 24 undisturbed soil lysimeters (35 cm in diameter and 150 cm...

Author(s): Sishuai Mao, M. Robiul Islam,, Yuegao Hu, Xin Qian, Fei Chen andXuzhang Xue

August 2013

Effects of different irrigation regimes and nitrogen levels on yield and quality of melon (Cucumis melo L.)

In order to study the effects of different irrigation regimes and nitrogen (N) levels on yield and some yield components of melon, a research was conducted at the Agricultural Experimental Field of the Harran University (Sanliurfa, Turkey) during the growth periods of 2007 and 2008. The growing season of melon was divided into four phenological stages: (i) Stage I, from seed germination to beginning of flowering; (ii)...

Author(s): M. Simsek and N. Comlekcioglu

August 2011

Isolation of a nitrate-reducing bacteria strain from oil field brine and the inhibition of sulfate-reducing bacteria

A nitrate-reducing bacteria (NRB) strain with vigorous growth, strong nitrate reduction ability, strain B9 2-1, was isolated from Suizhong36-1 oilfield, its routine identification and analysis of 16S rRNA and also the competitive inhibition experiments with the enrichment of sulfate-reducing bacteria (SRB) were carried out. The results showed that only the dosing of nitrate, nitrite as electron acceptors, the activation...

Author(s): Zhuang Wen,, Duan Jizhou, Chu Liye and Shao Hongbo,

August 2011

Effect of propionate on the production of natamycin with Streptomyces gilvosporeus XM-172

This study described the influence of feeding short-chain fatty acids and alcohols on natamycin production in the glucose basal medium, produced by Streptomyces gilvosporeus XM-172. The highest natamycin production was obtained with feeding propionate as compared to other precursors. The optimal propionate concentration and feeding time were 6 g L-1 and early log phase, respectively. This...

Author(s): Keju Jing, Xiaobin Hao and Yinghua Lu

August 2011

Antimicrobial activity of Crataeva religiosa Forst against bacteria isolated from Thryonomys swinderianus Temminck

An attempt has been made to carry out a screening on the antibacterial activity of leaves of Crateva religiosa Forst used in Benin traditional veterinary medicine against bacterial infection of Thryonomys swinderianus (class of Mammalia, family of Thryonomyidae) commonly called agouti or kholan. The aim of this study was to select the most active extracts and fractions...

Author(s): Latifou Lagnika, Eugenie Anago, Menonvè Atindehou, Brice Adjahoutonon, Karim Dramane and Ambaliou Sanni

August 2011

Synergistic effects of ginsenoside Rg3 and cyclophosphamine on tumor growth and angiogenesis in lung cancer

To evaluate the effectiveness of ginsenoside Rg3 alone or in combination with cyclophosphamide (CPA) on tumor growth and angiogenesis in human lung cancer, 54 female athymic mice were transplanted with lung cancer cells (A549) which then were randomly divided into 4 groups: Ginsenoside Rg3 group, CPA group, ginsenoside Rg3 plus CPA group and control group. Ginsenoside Rg3 of 3.0 mg/kg (once/day for 10 days)...

Author(s): Li Hang, Wang Jun, Guan Yanfeng, Yang Wenjun AiyingSuo Aiying, Chu Meihua, Wang Chenyu, Jiang Jing, Zhai Shengping and Mao Qishan

August 2011

Immunomodulatory and antioxidant activity of a Siraitia grosvenorii polysaccharide in mice

The aim of this present study was to investigate the immunomodulatory and antioxidant activities of Siraitia grosvenorii polysaccharide (SGP) using a mouse model. The roles of regulation of SGP were investigated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT)  assay, fluorescence method and ELISA method. The chemical structures were analyzed by Fourier transform infrared...

Author(s): Ling Zhang, Ting-Jun Hu and Chun-Ni Lu

August 2011

Effect of chlorhexidine on the shear bond strength of self-etch adhesives to dentin

The aim of this study was to investigate the effect of chlorhexidine on shear bond strength of self-etch adhesives to dentin. The crowns of 60 sound human premolars were horizontally sectioned to expose the coronal dentin. Dentin surfaces were polished with 320 grit silicon carbide papers, and were randomly divided into 4 groups (n = 15). In group 1, two-step self-etch adhesive resin (Clearfil SE Bond) was used. In...

Author(s): Mohammad Esmaeel Ebrahimi Chaharom, Amir Ahmad Ajami, Soodabeh Kimyai and Ahmad Abbasi

August 2011

Effect of low protein diet supplemented with or without amino acids on the production of broiler

Experiment was carried out to investigate the effect of low protein diet supplemented with or without amino acids on the performance of broiler. Hubbard 375 day-old broiler were purchased, initially weighed and randomly divided into five groups (75 broilers in each group). Group A was kept as control given commercial feed, group B further divided into two group B1 and B2 were fed low CP (15 and 16%) ratio...

Author(s): Shahzad Akbar Khan, Nisar Ujjan, Gulzar Ahmed, Muhammad Ismail Rind, Sarfaraz Ali Fazlani, Shahid Faraz, Shoaib Ahmed and Muhammad Asif

August 2011

Effects of amino acids and metabolizable energy on egg characteristics and broiler breeder performance

A study was conducted to determine the effects of diet formulation type on egg characteristics and reproductive performance of broiler breeder (50 to 64 weeks of age). 140 female and 20 male breeders in four treatments with five replicates (7 females : 1 male) were used in the randomized 2 × 2 factorial design. Four experimental diets were formulated based on two factors: two levels...

Author(s): Javad Nasr, Akbar Yaghobfar, Yahya EbrahimNezhad and Kambiz NazerAdl