Abbreviation: Afr. J. Biotechnol.
Start Year: 2002
Page 461 of 576, showing 20 records out of 11520 total, starting on record 9201, ending on 9220
DOI: 10.5897/AJB08.970[Article Number: 4DB67AF8777]
In Edo State, Nigeria, forest dereservation is increasing, regeneration is neglected and management is not able to cope with the problem due to inadequate staffing and other logistics. The review therefore concluded that the role of the forests which cut across many areas of human endeavour seem not to be appreciated enough by the populace. Forest regeneration after harvest or deforestation is thus neglected. As a... Read more.
DOI: 10.5897/AJB08.022[Article Number: 6026C088778]
Ascorbic acid is an important micronutrient necessary for a significant number of metabolic reactions in humans and other primates. It is a strong reducing agent involved in reduction reaction and it is structurally related to glucose. Experimental and epidemiological studies have documented the biochemical, physiological and therapeutic roles of ascorbic acid. It is an essential water-soluble antioxidant... Read more.
DOI: 10.5897/AJB08.023[Article Number: D2308AD8784]
Cowpea, which has now become an important protein source for the teeming populace of Nigerians especially those living in the humid agro-ecological zones of South-western Nigeria, is severely attacked by diseases. The causal agents of these diseases find the environment more conducive for survival and hence induce disease conditions in the host plant causing significant yield reduction. This paper reviews the... Read more.
DOI: 10.5897/AJB08.063[Article Number: 48527948788]
The shelf life of vegetable oils in food uses and their applicability in industrial situations is greatly dependent on their oxidative stabilities. Methods of improving oxidative stability values currently available include genetic modifications, compositional changes via chemical means, as well as the inhibition of oxidation by means of substances known as antioxidants. This paper reviews the properties of... Read more.
DOI: 10.5897/AJB08.024[Article Number: 234BAFC8792]
The health and other benefits of plant’s secondary metabolites, also known as antinutritional factors are reviewed. Examples of these natural compounds of plant origin are saponins, flavonoids, alkaloids, tannins, oxalates, phytates, trypsin (protease) inhibitors, phytohaemagglutinins (lectins), just to mention a few. Emphasis has always been laid on the toxic and anti-nutrient effects of these... Read more.
DOI: 10.5897/AJB08.014[Article Number: 6A7C2038794]
Advances in gray scale imaging, contrast- enhanced harmonic imaging and Doppler technologies have improved the effectiveness of ultrasonography in the evaluation of blunt abdominal trauma (BAT). The use of ultrasonography in the evaluation of the abdomen benefits from an understanding of the abdominal anatomy and familiarity with the acoustic signatures of lesions encountered in parenchymal injuries and the echogenicity... Read more.
DOI: 10.5897/AJB08.064[Article Number: 5D0A4768799]
Glucoside 3-dehydrogenase, one of the glucose redoxidases, is perhaps known for the vital role it plays in converting a series of sugars to their corresponding 3-ketoglucosides. Glucoside 3-dehydrogenase has attracted considerable attention in recent years due to broad substrate specificity and excellent regioselectivity. Glucoside 3-dehydrogenase is a FAD-enzyme, which is capable of oxidizing glucosides and... Read more.
DOI: 10.5897/AJB08.039[Article Number: 1C009DA8802]
Giardiasis is an acute form of gastroenteritis caused by the parasite Giardia lamblia. An increase in the incidence and frequency of the disease in the last few years in the developed world has brought to the fore a now recognized mode of transmission – sexual contact. This in turn has led to giardiasis being classified as a sexually transmitted disease by the Centre for Disease Control and Prevention (CDC)... Read more.
DOI: 10.5897/AJB08.028[Article Number: E2E60A78807]
The use of biotechnology in various aspects of human endeavour have obviously created a great impact but not without some risks. Not withstanding, there is still the need for its adoption as more of the already adopted biotechnologies are being improved upon with lesser demerits. Aquaculture is not also left out in the application of biotechnological approaches. The aquaculture industry is currently faced... Read more.
DOI: 10.5897/AJB08.040[Article Number: 25835EA8814]
The preparation of radiopharmaceuticals for distribution to several hospitals is practised widely and the transport is usually by road and plain, this is specially practised in big countries like Brazil where the distance from one state to other is bigger than one country compared to others in continents like Europe. The purpose of this paper is to describe a computational system developed to evaluate the dose of... Read more.
DOI: 10.5897/AJB08.071[Article Number: 780FF848821]
Plant cells are commonly exposed to a variety of injuries such as mechanical and herbivore wounding. Wounding is a continual threat to the survival of all organisms and an open wound caused by mechanical or herbivore wounding is a potential infection site for pathogens, thus expression of defense genes at the wound site is a barrier against opportunistic pathogens. Wounding in multicellular eukaryote cells... Read more.
DOI: 10.5897/AJB08.035[Article Number: 7676FD68822]
The Truth and Reconciliation Commission made significant progress in examining abuses committed during the apartheid era in South Africa. Despite information revealed by the commission, a large number of individuals remained missing when the commission closed its proceedings. This provided the impetus for the establishment of a Missing Persons Task Team within the South African National Prosecuting Authority.... Read more.
DOI: 10.5897/AJB08.072[Article Number: 5AEC08D8828]
Lysozyme is a hydrolytic enzyme which has been purified from cells, secretions and tissues of virtually all living organisms and viruses. While this protein has been recognized to possess many physiological and functional properties, its high microbicidal activity remains, by far, the main virtue that explains the high attention of scientists and industrial stakeholders for its practical applications in... Read more.
DOI: 10.5897/AJB08.036[Article Number: 1296E4C8833]
The status of neem biopesticide research, utilization and challenges in the central part of northern Nigeria was reviewed. In the sampled areas such as the Federal Capital Territory (FCT), Abuja and Niger State, the highest category of neem users (17.19%) were the rural farmers. Majority of the neem users obtained their materials from semi-wild trees on communal land. Our investigations showed that neem leaf... Read more.
DOI: 10.5897/AJB08.011[Article Number: 76EF27C8834]
Attempts to unravel the mechanisms of development of anaemia in trypanosome-infected animals yielded varying reports with those that implicate trypanosomal sialidase (SD) being among those that enjoy prominence. Significant cleavage of sialic acid (SA) on erythrocyte membranes and terminal positions of erythropoietin (Epo) by SD, which is released during trypanosome infection of animals, results in their rapid clearance... Read more.
DOI: 10.5897/AJB08.074[Article Number: FB191448838]
The history of cashew in Nigeria dates back to 15th century. Then, it was mainly used in afforestation schemes for the control of erosion in the former Eastern Nigeria. However, commercial cashew plantations started in Nigeria in the early 1950s with the establishment of first commercial plantations at Oghe, Oji and Mbala by the defunct Eastern Nigeria Development Corporation (ENDC) and Iwo, Eruwa and... Read more.
DOI: 10.5897/AJB08.038[Article Number: D232FAB8843]
Freshwater resources are now threatened by the presence and increase of harmful algal blooms (HAB) all over the world. The HABs are sometimes a direct result of anthropogenic pollution entering water bodies, such as partially treated nutrient-rich effluents and the leaching of fertilisers and animal wastes. The impact of HABs on aquatic ecosystems and water resources, as well as their human health... Read more.
DOI: 10.5897/AJB08.075[Article Number: 24404AB8844]
Over the past few decades, there has been a depletion of the stratospheric ozone layer due to emissions of halogen-containing compounds of anthropogenic origin. This has resulted in a concomitant increase in solar ultraviolet-B radiation. High levels of UV-B radiation are responsible for multiple biologically harmful effects in both plants and animals. In plants, these effects include DNA damage,... Read more.
DOI: 10.5897/AJB08.043[Article Number: 0D3A1038850]
Human immunodeficiency virus (HIV) presents an unprecedented genetic variability within infected individuals and across geographical locales. Sub-Saharan Africa accounts for almost 70% of all HIV infections worldwide and represents the region with the highest diversity of genetic variants of the virus. This review looks at the current approaches and techniques for the determination of HIV genetic diversity.... Read more.
DOI: 10.5897/AJB08.076[Article Number: 76D8AAF8851]
Use of the conventional quinoline- and sulphanamide-based drugs for the symptomatic treatment of malaria is gradually being replaced by artemisinin-based combination therapies (ACTs) due to increasing resistance by the Plasmodium parasite. This development has drastically increased artemisinin demand world-wide, and Artemisia annua L. is currently the only commercial source for the... Read more.
Page 461 of 576, showing 20 records out of 11520 total, starting on record 9201, ending on 9220