African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12218

Table of Content: 12 November 2014; 13(46)

November 2014

Nutritional characteristics of guava leaves and its effects on lipid metabolism in hypercholesterolemic rats

The objective of this study was to evaluate antioxidant substances, dietary fiber and antioxidant activity of guava leaves, and evaluate their amelioration hypercholesterolemia in rats. The leaves were dried and crushed into granulated powder. The active ingredient of the leaf powder was extracted by an ethanol/acetone mixture and called ethanol/acetone extract flour. Dietary fiber, vitamin C, beta-carotene, phenolic...

Author(s): Juliana Mesquita Freire, Celeste Maria Patto de Abreu, Stella Maris da Silveira Duarte, Fernanda Borges Araújo de Paula, Adriene Ribeiro Lima, Rafaella Araújo Zambaldi Lima, Denise Alvarenga Rocha and Anderson Assaid Simão

November 2014

Production of fructosyltransferase by Penicillium simplicissimum in batch culture

Seventeen (17) strains of macro-fungi were screened for fructosyltransferase (FTase) production, of which Penicillium simplicissimum was selected for further work. FTase production was carried out in shake flask cultured at 30°C and 250 rpm for 48 h. For optimization of one factor-at-a-time method, effects of initial sucrose concentration, fermentation time, pH, inoculum size and agitation speed were studied on...

Author(s): Mashitah, M. D and Hatijah, S. M

November 2014

Analysis of genetic diversity and population structure among exotic sugarcane (Saccharum spp.) cultivars in Ethiopia using simple sequence repeats (SSR) molecular markers

The present study was performed to study genetic relationships and population differentiation of 90 introduced sugarcane accessions in Ethiopia by means of 22 SSR molecular markers. The 22 SSR markers amplified a total of 260 alleles, of which 230 were poly­morphic with a mean of 10.45 alleles per SSR locus. The range in allele number was 4–22. A high level of polymorphism with a mean of 60.51% polymorphic...

Author(s): Esayas Tena, Firew Mekbib and Amsalu Ayana

November 2014

Evaluation of some handling and processing parameters for briquetting of guinea corn (Sorghum bi-color) residue

Biomass materials require reduction and densification for the purpose of handling and space requirements. Guinea corn (Sorghum bi-color) is a major source of biomass material in the tropic regions. The densification process involves some measurable parameters, namely: pressure, particles size and binder ratio. Guinea corn residue was collected from the Teaching and Research Farm of the Federal Polytechnic at Bida in...

Author(s): S. J. Bolufawi and A. I. Bamgboye

November 2014

Effect of equation pro and kema zed fungicides on cellulase and pectinase enzymes produced by some phytopathogenic fungi of broad bean

Two fungicides (equation pro and kema zed) were added to the medium in five doses (50,100, 200, 300 and 400 ppm active ingredient) to investigate the chemical control of cellulase and pectinase enzymes produced by some plant pathogens of broad bean. Alternaria alternata, Alternaria citri, Alternaria and Cochliobolus spicifer were isolated from diseased leaves of broad bean. The incorporation of these fungicides into the...

Author(s): A. Saleem, A. H. M. El-Said, T. A. Maghraby and M. A. Hussein

November 2014

Production of amylase enzyme from mangrove fungal isolates

The mangrove ecosystem serves as a bioresource for various industrially important microorganisms. The use of fungi as a source of industrially relevant enzymes led to an increased interest in the application of microbial enzymes in various industrial processes. Fungal colonies were isolated from sediments of five different mangrove ecosystems of Odisha such as Bhitarakanika, Dhamra, Mahanadi, Devi and Budhabalanga...

Author(s): K. Sahoo, N. K. Dhal and R. Das

November 2014

Antimicrobial activity and chemical analysis of some edible oils (Clove, Kalonji and Taramira)

Antimicrobial activity of oils of Syzigium aromaticum (Clove), Nigella sativa (Kalonji) and Eruca sativa Miller (Taramira) was checked against bacteria and fungi by agar well diffusion assay. It was found that Gram negative bacteria were more sensitive to these oils as compared to Gram positive bacteria. Klebsiella pneumonia, Aspergillus flavus and Cunninghamella were found to be more sensitive organisms showing large...

Author(s): Affhan Shoaib, Ghufran Saeed and Samia Ahmad