Abbreviation: Afr. J. Biotechnol.
Start Year: 2002
Page 1 of 593, showing 20 records out of 11847 total, starting on record 1, ending on 20
DOI: 10.5897/AJB2017.15932[Article Number: 6F35E5665260]
Conservation of farm animal genetic resources is of fundamental importance for the study of the relationships among breeds. The aim of this study was to evaluate the usefulness of the nuclear fluorescence inter simple sequence repeat (FISSR) markers in order to shed light on the genetic biodiversity of domestic animals. Two modifications of the original technique were made so as to make it more suitable for routine... Read more.
DOI: 10.5897/AJB2017.16033[Article Number: E93F0E265263]
Bearing in mind the use of natural and biodegradable products, this study aimed to evaluate physicochemical quality of ‘Tommy Atkins’ mangoes coated with a cassava starch, chitosan and pectin based edible coatings. The experiment was conducted using simplex-centroid mixture design. Compounds concentration corresponded to the independent variables studied, encoded as factors x1, x2 and x3: 1– cassava... Read more.
DOI: 10.5897/AJB2017.16109[Article Number: 1BFCA0F65266]
The plant Siparuna guianensis is used in traditional medicine and has been the target of studies on the development of new drugs for the control of pests and vector insects. The present study was aimed to evaluate the seasonal influence on the content and composition of the essential oil of S. guianensis. The experiment was conducted for 12 months evaluating the yield of the essential oil of leaves throughout the... Read more.
DOI: 10.5897/AJB2016.15378 [Article Number: 32B9D5D65092]
Commiphora swynnertonii is among the most commonly used medicinal plants by pastoralist communities especially in northern regions of Tanzania. The effect of resin from this plant on white blood cells (WBC) and haematopoietic organs was studied using albino mice. Sixty adult mice were randomly assigned into four groups (n = 15). G1 acted as control whereas G2, G3 and G4 received oral doses of 50, 100 and 200 mg resin... Read more.
DOI: 10.5897/AJB2017.15943 [Article Number: 7A68A4765094]
The aim of this study was to obtain and characterize biodegradable films of cassava starch plasticized with glycerol and reinforced with nanocellulose from coconut fibers. The mechanical and physical-chemical properties of the nano-biocomposites films obtained were evaluated. The method used to investigate the viability of incorporating coconut nanocellulose in films was applied through a statistical design of the... Read more.
DOI: 10.5897/AJB2017.15991 [Article Number: 2B7761765096]
Maize (Zea mays L.) is the staple food in Kenya, and mapping the qualitative trait loci (QTL) associated with resistance to maize stem borer pest is important towards marker assisted breeding for this quantitative trait. The objective of this study was to identify any QTL associated with resistance to Chilo partellus and Busseola fusca, the two important stem borer pests in maize production in Kenya. A total of 203 F2:3... Read more.
DOI: 10.5897/AJB2017.16024 [Article Number: D9090CB65018]
Silver nanoparticles (AgNPs) are nanoforms that express higher antimicrobial potential due to their shape and reduced size. The use of fungi to mediate the synthesis of AgNPs has increased the interest of scientists because of their rapid growth, large-scale cultivation and secretion of non-toxic molecules. The aim of this study was to synthesize AgNPs mediated by Aspergillus oryzae DPUA 1624 and evaluate the... Read more.
DOI: 10.5897/AJB2017.16064 [Article Number: 162B19C65020]
Gua1 gene in Schizosaccharomyces pombe encodes inosine 5′-monophosphate dehydrogenase (IMPDH), which catalyzes the first step in de novo biosynthesis of guanosine monophosphate (GMP). Knock-out cassette was constructed with polymerase chain reaction (PCR)-based gene targeting technique for deletion of gua1 gene in S. pombe and this knock-out cassette was transformed to S.s pombe wild type (972h-). Knock-out... Read more.
DOI: 10.5897/AJB2017.15959 [Article Number: 9C0384F65024]
Pigments play an important role in physiological and molecular processes such as photosynthesis, survival to oxidative damage and resistance to ultra violet radiation in microorganisms. This study isolated and characterized pigment produced by Bacillus subtilis PD5 from soil sample of rice field. The pigment was extracted using three solvent system, namely, methanol, n-hexane and ethyl acetate. Fourier transform... Read more.
DOI: 10.5897/AJB2015.15088 [Article Number: C6CA92165026]
Moringa oleifera is a commonly cultivated plant in the world. It has a high economic impact owing to its medicinal and nutritional values. Leaves of M. oleifera also contain various constituents that are useful for therapeutic purposes. The aim of this study is (i) to perform phytochemical screening, and to check antiradical and antihyperglycaemic activities of M. oleifera aqueous leaves extract (ii) to control the... Read more.
DOI: 10.5897/AJB2017.15965 [Article Number: A76995D65034]
The present study was conducted to assess the molecular discrimination of field isolates of Trypanosoma congolense and Trypanosoma vivax of Nigeria origin in vitro (PCR) whether there will be genetic alteration of the parasites as the infections of the isolates in Yankasa sheep progresses from acute through relapses to chronic stages. A total of thirty Yankasa sheep were acquired from Kastina State in the northern part... Read more.
DOI: 10.5897/AJB2016.15848 [Article Number: 54C4F4565036]
In the present investigation, the hypolipidemic activity of different extracts of aerial parts of Chomelia asiatica (Linn) is shown. The evaluation dose of different extracts (petroleum ether, ethyl acetate and methanol) of C. asiatica was fixed at 200 mg/kg/day. Hypolipidemic activity was screened by inducing hyperlipidemia with the help of atherogenic diet (AD) in Wistar albino rats and plasma levels of different... Read more.
DOI: 10.5897/AJB2017.16006 [Article Number: BE373F465038]
The diversity of culturable bacterial and fungal communities was assessed from leaves, trunk and rhizosphere of coconut palms infected and non-infected by the Côte d’Ivoire lethal yellowing (CILY) phytoplasma. Bacterial and fungal microbes were isolated from leaves, trunk and rhizosphere samples collected from two villages of Grand-Lahou, Braffedon and Yaokro, by using a high-throughput... Read more.
DOI: 10.5897/AJB2017.16022 [Article Number: B91177565042]
Cassava production in eastern and Central Africa is severely threatened by the current epidemic of cassava brown streak disease (CBSD). The disease is caused by cassava brown streak virus (CBSV) and Ugandan cassava brown streak virus (UCBSV) of the genus Ipomovirus, family Potyviridae. Using virus-free planting material is one effective way to reduce CBSD yield losses in farmer fields. The effects of chemical and heat... Read more.
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.
Page 1 of 593, showing 20 records out of 11847 total, starting on record 1, ending on 20