African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12392

Table of Content: 10 May 2012; 11(38)

May 2012

Effects of ridge and furrow rainfall harvesting system on Elymus sibiricus yield in Bashang agro-pastoral zone of China

  A ridge-furrow rainfall harvesting system (RFRHS) was designed to increase the available soil water for Elymus sibiricus artificial grassland in order to improve and stabilize its yield in the agro-pastoral zone of Bashang region in North China. Field experiments were conducted during the growth seasons in 2008 to 2010 to evaluate the effects of the RFRH system on soil temperature, soil water...

Author(s): He Feng, Wang Kun, Li Xiang Lin and Liu Gui Xia

May 2012

Effects of a certified organic fertilizer on the yield and market quality of root parsley (Petroselinum crispum (Mill) Nym. ex A.W. Hill ssp. tuberosum (Bernh.) Crov.)

  The study shows the results of a four-year study on the effects of Siforga, a certified organic fertilizer on the yield and market quality of the root of the parsley varietyBerliner medium long. The researched fertilizer quantities were at the rates of 500, 1.000, 2.000 and 3.500 kg ha-1 and the control treatment was a plot where no organic fertilizer was applied. Field trials were...

Author(s): Vladimir FILIPOVIĆ, Stevan RADIVOJEVIĆ, Vladan UGRENOVIĆ, Goran JAĆIMOVIĆ, Janja KUZEVSKI, Jonel SUBIĆ and Jasna GRBIĆ

May 2012

Character association and inheritance studies of different sorghum genotypes for fodder yield and quality under irrigated and rainfed conditions

  Cyanide poisoning is the major problem in sorghum fodder. This poisoning results in livestock mortality and causes economic loss to the people. Some work have been reported on quantity but little work has been focused on quality especially the cyanide content in sorghum fodder in Pakistan. Inheritance mechanism for some fodder yield and quality traits were studied among 25 sorghum genotypes under irrigated...

Author(s): Abdus Sattar Tariq, Zahid Akram, Ghulam Shabbir, Muhammad Gulfraz, Khalid Saifullah Khan, Muhammad Shahid Iqbal and Talat Mahmood

May 2012

The effects of climatic conditions and geographical locations on the volatile flavor compounds of fig (Ficus carica L.) fruit from Iran

  The effects of climatic conditions and geographical locations on the volatile flavor compounds of Ficus  carica fruit were investigated in this study. Fruit flavor compounds were extracted by using ultrasound  (US) water bath apparatus and eluted by n-pentane, diethyl ether (1:2) solvent and then analyzed by gas  chromatography-flame ionization detector (GC-FID) and gas...

Author(s): Eneke Esoeyang Tambe Bechem

May 2012

Utilisation of organic and inorganic nitrogen sources by Scleroderma sinnamariense Mont. isolated from Gnetum africanum Welw.

  The ability of Scleroderma sinnamariense Mont. to utilise some organic and inorganic nitrogen (N)  sources for growth was examined in axenic liquid cultures. Pisolithus tinctorius Pers. was included for  comparison. Both fungi species produced measurable biomass on all the N sources used in this  experiment. The growth of S. sinnamariense on ammonium-N was better than that observed...

Author(s): Eneke Esoeyang Tambe Bechem

May 2012

Population dynamics of Caspian spirlin (Actinopterygii: Cyprinidae) in the Kesselian Stream, Iran

  Studies on age, growth, mortality and recruitment of Alburnoides sp. were conducted in Kesselian Stream, South Caspian Sea, Iran from July 2008 to June 2009. Length frequency data were analyzed by using FISAT (FAO-ICLARM Stock Assessment Tools) software for estimating population parameters. Asymptotic length (L∞) and growth coefficient (K) were estimated at 104.48 mm and 1.19/year. Growth...

Author(s): Mahvash Seifali, Aziz Arshad, S. M. Nurul Amin, Bahram Hasanzadeh Kiabi, Hamid Reza Esmaeili and Faezeh Yazdani Moghaddam

May 2012

Antibacterial activities of the extracts of cyanobacteria and green algae isolated from desert soil in Riyadh, Kingdom of Saudi Arabia

  In compliance to the recent surveys on algal species and their potentials to produce biologically active compounds, seven algal species belonging to cyanobacteria such as Spirulina platensis, Nostoc linckia, Phormidium autumnale, Tolypothrix distortaand Microcystis aeruginosa and green algae such as Chlorella vulgaris, andDunaliella salina, were isolated from soil in Riyadh,...

Author(s): Hend Al-Wathnani, Ismet Ara, R. R. Tahmaz and M. A. Bakir

May 2012

Detection of Aspergillus spp. and determination of the levels of aflatoxin B1 in rice imported to Bushehr, Iran

  Aflatoxins (B1, B2, G1 and G2) are hepatotoxic metabolites produced by Aspergillus flavus on a number of agricultural commodities. Their levels were studied in rice samples imported to Iran through a southern port in Bushehr. Aflatoxins analysis was performed by solvent extraction, immunoaffinity clean-up and determination using high performance liquid chromatography (HPLC) equipped with...

Author(s): M. Mohammadi, G. H. Mohebbi, S. Akbarzadeh and I. Shojaee

May 2012

Development of a potential lignocellulolytic resource for rapid bioconversion of rice straw

  This study was conducted at the Laboratory of Food Crops and Floriculture, Institute of Tropical Agriculture, Universiti Putra Malaysia to characterize the potential lignocellulolytic bacteria for rapid bio-bioconversion of rice straw. Fifty isolates of bacteria were isolated from several in-situ and in-vitro sources. Isolates B3, B13, B21, B37 and B46 showed the highest enzymatic...

Author(s): H.  Kausar , M. Sariah, M. Razi Ismail,  Halimi Mohd Saud, S. H. Habib, and Zulkarami Berahim

May 2012

Anti-diabetic action of the aqueous extract of Ocimum suave in alloxan-induced diabetic rats

  This study was conducted at the Laboratory of Food Crops and Floriculture, Institute of Tropical Agriculture, Universiti Putra Malaysia to characterize the potential lignocellulolytic bacteria for rapid bio-bioconversion of rice straw. Fifty isolates of bacteria were isolated from several in-situ and in-vitro sources. Isolates B3, B13, B21, B37 and B46 showed the highest enzymatic...

Author(s): Umar, I. A., Mohammed, A., Dawud, F. A, Kyari, H. and Abdullahi, M.

May 2012

The essential oil composition and antimicrobial activity of leaves of Schistostephium hippifolium

  The essential oil from the leaves and branches of Schistostephium hippifolium were extracted by hydro-distillation during summer and winter months. Both essential oils were analyzed by gas chromatography- mass spectroscopy (GC-MS) respectively during their extracted period. Fourteen compounds were identified from essential oil extracted during the February, summer month in South...

Author(s): Mayekiso, B., Magwa, M. L. and Arnold, L.

May 2012

Characterization of a cellulase from the haemolymph of the giant African snail (Archachatina marginata)

  The giant African snails (Archachatina marginata) are herbivorous tropical gastropods. They are commonly located in areas littered with decaying vegetable matters which they feed on. When the haemolyph of this organism was passed through Sephadex G-200, the resin was digested. The ability of snails to digest vegetable matters and the digestion of Sephadex G-200 resin by the haemolyph led to the suspicion of...

Author(s): FAGBOHUNKA Bamidele Sanya, AGBOOLA Femi Kayode and AFOLAYAN Adeyinka

May 2012

Effect of dietary vitamin E on Eimeria tenella-induced oxidative stress in broiler chickens

  An experiment was carried out to investigate the impact of high doses of dietary vitamin E on antioxidant status in broiler chickens (Ross 308) experimentally infected with Eimeria tenella. One day old chicks were assigned to five groups (25 each) and given basal diet (A and B) or basal diet supplemented with 100, 316 or 562 mg/kg of vitamin E (C to E), respectively. On the 21st day, all chicks...

Author(s): Ramezan Ali Jafari, Rezvan Kiani, Ali Shahriyari, Farzad Asadi and Hossein Hamidi-Nejat

May 2012

Protective effect of catalpol on isoproterenol-induced myocardial injury in Wistar rats

  The neuroprotective effects of catalpol had been well demonstrated in many studies. Nevertheless, little work was done to investigate the cardioprotective effects of catalpol. This study was designed to explore whether catalpol protected myocardium against isoproterenol (ISO)-induced myocardial injury through attenuating oxidative stress and suppressing inflammation. Histopathological changes were assessed...

Author(s): Fang-Jie Bi, Hu Zhang, Yu-Jia Xu and Jian Hu

May 2012

Exploration of indigenous agrowastes for cellulase production by Aspergillus niger

  Regional agrowastes such as Vigna mungo, Saccharum spontaneum and Brassica campestris were collected and biohydrolysis of these substrates for cellulase production were carried out by Aspergillus niger. Proximate composition of each agrowastes was analyzed based on dry weight, to have an insight view of their chemical composition. Cellulose content of S....

Author(s): Umbrin Ilyas, Shakil Ahmed, Abdual Majeed and Muhammad Nadeem

May 2012

Taste profile characterization of white ginseng by electronic tongue analysis

  We conducted taste profile analysis of white ginseng (Panax ginseng) using a taste-sensing system. Taste such as sourness, bitterness, astringent, aftertaste, umami, richness, and saltiness of the four subfractions (n-hexane fr. = Pg1; EtOAc fr. = Pg2; CHCl3 fr. = Pg3; n-BuOH fr. = Pg4) from white ginseng was checked using an electronic tongue. The bitterness and aftertaste-B of Pg3 were...

Author(s): Dong Gu Lee, Kyung-Tack Kim and Sanghyun Lee

May 2012

Natural occurrence of heavy metal, fungi and mycotoxins in soybean meal samples used in animal feeding in Saudi Arabia

  20 samples of soybean meal used in animal feeding in Saudi Arabia were analyzed for their content of heavy metals and contamination with fungi and/or their mycotoxins. The analyzed heavy metals were lead, copper, cadmium, nickel, chromium, arsenic and mercury, which were detected using Atomic Absorption Spectrometer. The data shows that cadmium levels in soybean meal were higher in four samples when compared...

Author(s): Madeha N. Al-Seeni

May 2012

DNA-tagged nano gold: A new tool for the control of the armyworm, Spodoptera litura Fab. (Lepidoptera: Noctuidae)

  The efficacy of the DNA tagged gold nanoparticles on the major polyphagous pest,Spodoptera litura Fab. (Lepidoptera: Noctuidae) was evaluated. To determine the efficacy of the test nanoparticle, dilutions viz. 200, 300, 400 and 500 ppm were prepared and 10 µl of the suspension was dispensed on the chickpea (Cicer aritinum) based semi-synthetic diet filled in 5 ml glass vials. Second...

Author(s): A. K. Chakravarthy, Atanu Bhattacharyya, P. R. Shashank, Timothy T. Epidi, B. Doddabasappa and Swapan K. Mandal