Abbreviation: Afr. J. Biotechnol.
Start Year: 2002
Page 1 of 592, showing 20 records out of 11834 total, starting on record 1, ending on 20
DOI: 10.5897/AJB2017.15866[Article Number: 333295C64946]
A demyelinating sickness is any ailment of the nervous system in which the myelin casing of neurons is injured. This harm weakens the transmission of signals in the pretentious nerves. Demyelinating diseases, like multiple sclerosis (MS) and Charcot-Marie-Tooth (CMT) disease, are categorized on the basis of the scratch of the myelin covering around neurons, because of swelling and gliosis in the central nervous system... Read more.
DOI: 10.5897/AJB2017.15946[Article Number: BB8EAE164950]
T-Lymphocytes (T-cells) play a dominant role in the initiation and maintenance of autoimmune inflammatory processes. They become activated by the presentation of antigen such as auto antigen. A main feature of T-cell activation is the production of cytokines. Though, uncontrolled T-cells activation through T-cell receptor (TCR) has been linked to numerous autoinflammatory and autoimmune pathologies. This study... Read more.
DOI: 10.5897/AJB2017.16061[Article Number: D7128D464952]
Rabilé is a ferment of local beer called “dolo” in Burkina Faso. It is used for local beer production and as condiment in sauces. Its process of production could be a source of contamination. So the quality of ferment needs to be guaranteed for consumers’ health. The aim of the study was to control the hygienic quality of local ferment consumed in Burkina Faso. A total of 70 samples were... Read more.
DOI: 10.5897/AJB2015.15084 [Article Number: E3C48E964954]
Larvicidal active pure chemical compound was isolated from a Trametes species using conventional chemistry techniques like solvent-solvent extraction and liquid-solid adsorption techniques. Larvicidal assays carried out on the purified compound, LC50 and LC90 values were calculated and found to be 23.5 and 67.4 ppm, respectively. The chemical structures of the purified compound was elucidated using standard... Read more.
DOI: 10.5897/AJB2017.16043 [Article Number: 051C88564956]
In vitro antioxidant activity of methanolic (ME) and ethanolic (ET) extracts of six species of seaweeds (Cystoseira stricta, Cystoseira compressa, Corallina elongata, Porphyra umbilicalis, Enteromorpha compressa and Ulva lactuca) collected from Algerian West Coast was evaluated, using 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging assay and reducing power assay. They were tested for total phenolic content. The... Read more.
DOI: 10.5897/AJB2017.16072 [Article Number: EA6594F64957]
Diabetes type 2, cancers, hypertension and obesity have become problematic diseases worldwide calling for more studies on their prevention and management. Antioxidant phytochemicals have shown potential to reduce cases of such chronic diseases therefore the present study quantified antioxidant phytochemicals in traditional dishes consumed in Zimbabwe. Traditional dishes are readily available therefore are cheap and... Read more.
DOI: 10.5897/AJB2017.15952 [Article Number: 712FBD764966]
Nanofertilizers may be a possible replacement for organic fertilizers because they can get to targeted sites in a plant and either enhance or thwart its growth depending on the toxicity level of the used nanoparticles. Zinc oxide nanoparticles are said to be a good source of nutrients for crop production and using these nanoparticles as bio fertilizers, could help to reduce the chemical residue in the grown vegetables... Read more.
DOI: 10.5897/AJB2017.16021 [Article Number: 6383CB064862]
Trehalose-6-phosphate phosphatase (TPP) is one of the primary enzymes involved in the synthesis of trehalose, the main sugar found in insect hemolymph. In the present study, we report for the first time heterologous expression in Pichia pastoris, characterization and homology modeling of TPP from Anopheles gambiae mosquito. Purified TPP recombinant exhibited a molecular weight of approximately 36 kDa with optimum pH of... Read more.
DOI: 10.5897/AJB2016.15824 [Article Number: A0BA7CB64864]
Proper conditioning of leaf tissues in collection expeditions can affect the quantity and quality of DNA in the extraction process. The aim of this work was to define a method of preserving foliar tissue suitable for obtaining DNA from Brazilian Cerrado trees. Young leaves of species (Mangaba and Baru) were collected and conditioned in five different treatments during a period of six days. Genomic DNA was obtained using... Read more.
DOI: 10.5897/AJB2017.15938 [Article Number: 7CCF9F864866]
This research is aimed at improving the productive and pathological picture of rabbits reared in a semi-humid environment using Moringa oleifera leaf extract (MOLE). Twenty four mixed- breed rabbits, having an average weight of 700g, were used in this study. They were randomly divided into four equal treatments (6 rabbits each) and gavaged with various concentrations of MOLE. Treatment 1 (control) was given 0ml MOLE/kg... Read more.
DOI: 10.5897/AJB2016.15777 [Article Number: 0FAA49864868]
Municipal solid waste generated in our cities, with an unprecedented population growth, has resulted in degrading environmental quality, thus a major problem for policy makers. The extent of Pb, Cu, Zn, Cd, Hg and Zn contamination in soils of the studied area, where vegetables were grown, using metal contamination factor (CF) and pollution load index were assessed. The concentrations of heavy metals studied were in the... Read more.
DOI: 10.5897/AJB2017.16073 [Article Number: BF079EB64870]
This study aimed to assess the application effect of abscisic acid (S-ABA) on color, and total anthocyanin and phenolic compound contents of the ‘Niagara Rosada’ grapes. The experiment was carried out in a commercial vineyard located in Jales, SP, Brazil, during 2014/2015. The randomized block design was used with four treatments and five replications. The treatments consisted of applying different... Read more.
DOI: 10.5897/AJB2016.15860 [Article Number: E56524C64872]
While the alternative transcription and splicing mechanisms have long been known for some genes like oncogenes, their prevalence in almost all multi-exon genes has been recently realized with the increasing application of high-throughput experimental methods, named Next Generation RNA Sequencing (NGS). Henceforth, understanding the regulation of these processes in comparisons between cell types and cancer requests,... Read more.
DOI: 10.5897/AJB2017.16014 [Article Number: 62E8DC264874]
The elephant grass has gained prominence as one of the main forage species used for biomass production. Therefore, the aim of this study was to identify elephant grass genotypes with high energy biomass production potential by evaluating morpho-agronomic and biomass quality. The following traits were evaluated in this study: dry matter yield (DMY), percentage of whole-plant dry matter (%DM), percentage of neutral... Read more.
DOI: 10.5897/AJB2017.15927[Article Number: 4711BEE64715]
Xylooligosaccharides (XOS) are sugar oligomers made up of xylose units with the chain length of 2 to 10 and are considered non-digestible food ingredients. It is mainly produced from xylan hydrolysis. XOS have a characteristic of prebiotic by promoting the growth of probiotic organisms. They have various physiological effects such as reducing cholesterol, maintaining the gastrointestinal health and improving the... Read more.
DOI: 10.5897/AJB2017.16036[Article Number: AA612A664717]
This study aimed at optimizing the immunocapture (IC) and simple-direct-tube (SDT) -reverse transcriptase polymerase chain reaction (RT-PCR) techniques for detection of Rice yellow mottle virus (RYMV) in order to avoid the extraction of high quality RNA required for molecular methods and avoid costs involved. Rice yellow mottle virus strains and phylotypes were obtained from infected rice leaf samples collected from... Read more.
DOI: 10.5897/AJB2017.15998 [Article Number: 8A1F24464719]
Mushrooms play an important social, economic and ecological role in the world. In this study, the proximate compositions, minerals and amino acids contents of Russula alveolata, Russula cf. compressa, Russula flavobrunnea var. aurantioflava and Russula ochrocephala from Burkina Faso were investigated. The chemical analysis showed the presence of volatile oil, sterols and triterpenes, carotenoids, saponosides, reducing... Read more.
DOI: 10.5897/AJB2016.15733[Article Number: CFACE1664721]
Seedling production of canjerana (Cabralea canjerana (Vell.) Martius) has been limited by difficulty in germination, caused by recalcitrant behavior of their seeds. The objective of this study was to develop an efficient protocol for conservation and production of canjerana micropropagated plantlets. Seeds of canjerana were disinfected with 0, 2.5, 5.0, 7.5 and 10% of NaOCl solution, at immersion times of 10, 20 and 30... Read more.
DOI: 10.5897/AJB2017.15942[Article Number: D4548B964723]
Yam (Dioscorea species) and banana (Musa species) leaf sample contain high levels of polysaccharide and polyphenolic compounds. Extraction of good quality DNA from such leaves is usually problematic. Therefore, there is a need to extract good quality DNA in order to perform downstream DNA analysis, especially for the detection of viruses due to their low titration in some infected leaves. The cetyltrimethylammonium... Read more.
DOI: 10.5897/AJB2017.15903[Article Number: 0AF2F7164638]
Fonio (Digitaria exilis) is a crop grown in Africa for its excellent culinary and nutritional properties and is a valuable source of income for smallholder farmers. Its improvement has long been neglected by scientists because the crop was one of the lost crops of Africa. Recent advances in Fonio research are centered on its evolution, nutritional and economic values. The lack of a transformation and other biotechnology... Read more.
Page 1 of 592, showing 20 records out of 11834 total, starting on record 1, ending on 20