Abbreviation: Afr. J. Biotechnol.
Start Year: 2002
Page 461 of 558, showing 20 records out of 11144 total, starting on record 9201, ending on 9220
DOI: 10.5897/AJB08.232[Article Number: 7FA09647905]
A protocol was developed for in vitro plantlet regeneration of mangosteen (Garcinia Mangostana L.) from shoot tip, stem and seed explants. Shoot tip explants produced the highest mean number of shoots per explant on media supplemented with 1.0 mg/L 6-benzylaminopurin (BAP) and 0.05 mg/L kinetin (KIN) (73.3). On medium containing 0.1 mg/L BAP and 0.05 mg/L KIN, the highest mean shoot height reached 1.2 cm.... Read more.
DOI: 10.5897/AJB08.329[Article Number: 5AFC1DD7943]
A laboratory-scale submerged attached growth bioreactor using Luffa cylindrica as support material for the immobilization of nitrifying bacteria was applied for polishing the effluent of an UASB reactor treating domestic wastewater under the tropical conditions of northeast Brazil, in the City of Campina Grande (7o 13’ 11” South, 35o 52’ 31” West, 550 m above m.s.l.), Paraiba... Read more.
DOI: 10.5897/AJB08.871[Article Number: 0C1BFD77954]
An α-amylase was purified from the American cockroach Periplaneta americana(Linnaeus) to homogeneity by four steps purification via ammonium sulphate crude extract precipitation, Sephacryl S-100 HR gel permeation chromatography, anion exchange chromatography on DEAE-Sepharose CL-6B and hydrophobic interaction chromatography on phenyl Sepharose CL-4B. The purification was approximatively 38.42 fold with a... Read more.
DOI: 10.5897/AJB07.803[Article Number: F52F2DA7968]
Ease of separation of dietary fibre components of cassava pulp relative to other tropical root crops was the motivation for this study. Food grade fibres were isolated from cassava pulp using simple technique that consist essentially solvent mixture-separation procedure. Assessment of selected cooking proprieties namely paste formation and swelling capacity of the fibre isolates in comparison to the prime starch showed... Read more.
DOI: 10.5897/AJB08.198[Article Number: 7188FF77982]
Leaf meal (LM), leaf proteins concentrate (LPC) and LPC residues from Telfairia occidentalis were produced, chemically characterized and the protein quality of the LPC evaluated using rats. Five infant weaning foods were formulated using varying combinations of T. occidentalis LPC and soybean meal. These foods were compared with three coded commercial infant weaning foods (CFF, CFN and CFC) currently... Read more.
DOI: 10.5897/AJB08.383[Article Number: 8F462E17995]
Bacillus strains (B1 - B5) producing extra cellular lipase were isolated from the soil sample of coconut oil industry. The strains were identified by morphological and biochemical characters. Growth of the organisms and lipase production were measured with varying pH (4 - 9) temperature (27, 37 and 47ºC) and various substrate concentrations. The result indicated that the lipase production varied... Read more.
DOI: 10.5897/AJB08.361[Article Number: 7D73CF38034]
Absorption spectra of 9-fluorenone had been studied in polar and non-polar solvents. Maximum of four bands were observed; the shift in these band as the solvents were changed from polar to non-polar were noted. The quantitative treatments of the shifts allowed the transition to be assigned as n®p*or p®p*. Key words: Fluorenone, electronic absorption, transition, excited state polar and... Read more.
DOI: 10.5897/AJB08.328[Article Number: CA777336961]
The effects of the aqueous extract of the leaves of Telfairia Occidentalis (fluted pumpkin) were studied on some haematological indices, sperm parameters and blood glucose in male albino rats. The experiment was divided into two parts. In the first part, twelve (12) male rats were divided into two groups of six (6) rats each. Group 1 rats served as control and were given 10 ml/kg of normal saline while the... Read more.
DOI: 10.5897/AJB2008.000-5058[Article Number: 7B51B5B7009]
In the present communication, a comparative HPLC analysis of water-soluble vitamins (B-group) was carried out in in vitro and ex vitro germinated chickpea (Cicer arietinum L.) seeds. Quantitative analysis of ex vitro and in vitro germinated seedlings showed significant differences in vitamin contents. Maximum amount with a linear increase in B1 (thiamine HCl), B2... Read more.
DOI: 10.5897/AJB08.409[Article Number: 0A1896E7041]
Dsn1p is a component of the mind complex (Mtw1p Including Nnf1p-Nsl1p-Dsn1p) that is essential for the segregation of chromosome in yeast cells. This protein assists the joining of kinetochore subunits contacting DNA to those contacting microtubules in yeast cells. Null mutants of this protein are not viable while the over-expression of the Dsn1 protein in yeast cells results in nuclear anomalies and growth... Read more.
DOI: 10.5897/AJB08.413[Article Number: 82A80777064]
Trino IB mixture at a very minimal concentration (0.2 ml) was found not only to protect rats against lethal dose of pathogenic isolates of Escherichia coli andStaphylococcus aureus but it is also capable of ameliorating the deleterious effect of very high concentration of sodium arsenite (6 mg/kg body weight) in rat and bird. Key words: Immunobooster, Escherichia... Read more.
DOI: 10.5897/AJB08.276[Article Number: 9FAFCDD7084]
The high molecular weight glutenin subunits (HMW-GS) are key factors in bread making quality since they are major contributors of glutenin elasticity and polymer formation of wheat dough. DNA markers for quality traits are currently used by wheat breeders for direct measurement of these traits without waiting for advancing generations of breeding materials to conduct biochemical tests. The goal of this study was to use... Read more.
DOI: 10.5897/AJB08.415[Article Number: 98304777105]
Yellow rust resistance locus Yr10 located on chromosome 1B in Moro and originated from the Turkish line PI178383 was investigated in terms of polymorphism in seven winter type bread wheat cvs. (Triticum aestivum ssp.Aestivum) Altay2000, İzgi2001, Sönmez2001 (yellow rust resistant), Aytın98, ES14, Harmankaya99 (yellow rust susceptible) and PI178383 as control. Exon 1 (1 - 833 bp) and Exon 2 (1989 -... Read more.
DOI: 10.5897/AJB08.394[Article Number: 32E548D7125]
Acacia senegal belongs to the subgenus, Aculeiferum. It is an African arid and semi arid zone multipurpose tree species, highly valued for gum arabic production, agroforestry and desertification control besides other multiple uses. Genetic variation and resulting variable groupings were assessed using combined RAPD+ISSR markers within and among four Kenyan populations of A.... Read more.
DOI: 10.5897/AJB2008.000-5059[Article Number: E35C4597177]
With a view to understanding the traits which can be used as a quick criteria for drought tolerance, field and laboratory experiments were used to evaluate nine wheat (Triticum aestivum L.) genotypes; seven local varieties with two introduced genotypes from International Center for Agricultural Research in the Dry Areas (ICARDA). The field experiment was grown under two water regimes (stress and non stress... Read more.
DOI: 10.5897/AJB07.793[Article Number: 3A224947206]
The resistance/susceptibility of 5 cassava cultivars from Ghana to infectious clones of two cassava mosaic viruses (ACMV-[CM] and EACMV/ACMV-[CM]) was investigated in this study. Plantlets of cassava cultivars were obtained using nodal cuttings initiated from tissue culture. These cassava cultivars were challenged with both DNA A and B components of the infectious clones named above using particle gun bombardment. The... Read more.
DOI: 10.5897/AJB07.506[Article Number: 71ADF1A7870]
Emerging chromosome types in some Solanum species underscore inherent potentials and possible new and expanded genome. Interspecific crosses involving the varieties of Solanum melongena L., Solanum macrocarpon L. and Solanum aethiopicum L. were carried out to assess species phylogenetic relationships and the extent of evolutionary changes with a view to improving the agronomic... Read more.
DOI: 10.5897/AJB07.702[Article Number: F7E17E27885]
The study was carried out to assess the effects of land quality, management and cropping system on cassava production in the derived savanna and rain forest of southwestern Nigeria. Soil quality was studied from farmers’ fields which had been under cassava cultivation for at least ten (10) years. The yield data obtained from different crop mixtures and management practices were compared with the performance of... Read more.
DOI: 10.5897/AJB07.570[Article Number: BF7EF757917]
A total of 62 Pseudomonas isolates were selected from a contaminated site at Sohag district and tested for their resistance tto cadmium metal. Isolate no. 22 was found to be the most resistant one and has a plasmid with molecular wt27.491 Kbp. The minimal inhibition concentrations (MIC) for the resistant (R) and adopted sensitive (S) isolates were 1.0 and 0.119 mmol L-1, respectively. The growth,... Read more.
DOI: 10.5897/AJB08.261[Article Number: 2CF02477938]
Uapaca kirkiana Muell Arg. is one of the most popular indigenous fruit trees in the Miombo woodlands of southern Africa. An investigation into existing indigenous knowledge and socio- economic use of this fruit tree was conducted in Malawi. The survey revealed that U. kirkiana fruits contribute considerably to livelihood as a food supplement and for income generation among local communities. However,U.... Read more.
Page 461 of 558, showing 20 records out of 11144 total, starting on record 9201, ending on 9220