Browsing Research Articles (Microbiology) by Title
Now showing items 46-65 of 100
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The formulation of synthetic domestic wastewater sludge medium to study anaerobic biological treatment of acid mine drainage in the laboratory
(South African Water Research Commission, 2016-04)Requirements for successful biological treatment of acid mine drainage (AMD) rely on the reduction of sulphates by microorganisms using a suitable organic carbon source. Various carbon sources, such as domestic wastewater ... -
Fruit waste streams in South Africa and their potential role in developing a bio-economy
(Academy of Science of South Africa, 2015)Current and previous studies on bio-based (fruit) wastes and wastewaters, with a particular emphasis on research in South Africa, were reviewed. Previous studies have focused predominantly on the beneficiation and ... -
Functional expression of cellobiohydrolases in Saccharomyces cerevisiae towards one-step conversion of cellulose to ethanol
(Elsevier, 2006-09)To investigate the possible use of Saccharomyces cerevisiae as a candidate for consolidated bioprocessing (CBP) of cellulose to ethanol, four fungal cellobiohydrolase (CBH) encoding genes (Trichoderma reesei cbh1 and cbh2, ... -
Fungi associated with the skin of a southern right whale (Eubalaena australis) from South Africa
(Taylor & Francis group, 2010-09)Cutaneous fungi are known to affect parts of the outermost skin layers of mammals, including the epidermis, stratum spinosum and stratum corneum, as well as mucocutaneous membranes, genitalia or external ears. Relatively ... -
Gedeeltelike beskrywing van bakteriee in die SVK van Haliotis midae, met die fokus op potensiele probiotika
(LitNet, 2015-08)Perlemoenboerdery is een van Suid-Afrika se belangrikste akwakultuurbedrywe. Van die grootste probleme in hierdie bedryf is die stadige groeitempo van die perlemoen en ekonomiese verliese as gevolg van siektes. Daar word ... -
Glycerol in South African table wines : an assessment of its relationship to wine quality
(South African Society for Enology and Viticulture, 2002)Glycerol is an important by-product of glycolysis and is quantitatively one of the major components of wine. While the physicochemical and sensory characteristics of pure glycerol are well established, the impact of varying ... -
Glycerol production by the yeast saccharomyces cerevisiae and its relevance to wine : a review
(South African Society for Enology and Viticulture, 1998)Glycerol is a sugar alcohol produced as a by-product of the ethanol fermentation process by Saccharomyces cerevisiae. In wines, levels between 1 and 15 gll are frequently encountered and the higher levels are thought to ... -
High level secretion of cellobiohydrolases by Saccharomyces cerevisiae
(BioMed Central, 2011-09)BACKGROUND: The main technological impediment to widespread utilization of lignocellulose for the production of fuels and chemicals is the lack of low-cost technologies to overcome its recalcitrance. Organisms that hydrolyze ... -
High yield of culture-based diagnosis in a TB-endemic setting
(BioMed Central, 2012-09)Abstract Background In most of the world, microbiologic diagnosis of tuberculosis (TB) is limited to microscopy. Recent guidelines recommend culture-based diagnosis where feasible. ... -
High yield recombinant thermostable α-amylase production using an improved Bacillus licheniformis system
(BioMed Central, 2009-10)Abstract Background Some strains of Bacillus licheniformis have been improved by target-directed screening as well as by ... -
Highly efficient L-lactate production using engineered Escherichia coli with dissimilar temperature optima for L-lactate formation and cell growth
(BioMed Central, 2014)L-Lactic acid, one of the most important chiral molecules and organic acids, is produced via pyruvate from carbohydrates in diverse microorganisms catalyzed by an NAD+-dependent L-lactate dehydrogenase. Naturally, Escherichia ... -
Identification of lactobacillus spp. isolated from different phases during the production of a South African fortified wine
(South African Society for Enology and Viticulture, 2002)Fortified wines contain a high level of unfermented sugars and are prone to spoilage by alcohol-tolerant lactic acid bacteria. A total of 62 strains were isolated from various production stages of one of the more popular ... -
Identification of the gene for β-fructofuranosidase from Ceratocystis moniliformis CMW 10134 and characterization of the enzyme expressed in Saccharomyces cerevisiae
(BioMed Central, 2013-11)Background: β-Fructofuranosidases (or invertases) catalyse the commercially-important biotransformation of sucrose into short-chain fructooligosaccharides with wide-scale application as a prebiotic in the functional foods ... -
Impact of yeast breeding for elevated glycerol production on fermentative activity and metabolite formation in chardonnay wine
(South African Society for Enology and Viticulture, 2000)Glycerol in wine originates mainly as a by-product during fermentation by yeast and is thought to add to the body and smooth mouth-feel. We evaluated the properties of Chardonnay wine produced using various wine yeast ... -
The impact of yeast genetics and recombinant DNA technology on the wine industry - a review
(South African Society for Enology and Viticulture, 1991)Despite our limited knowledge of the genetic make-up of commercial wine yeasts and the fact thatthe advantages of genetic manipulation of wine yeasts have not yet been demonstrated in practice, the wine industry has to ... -
Improved ethanol productivity from lignocellulosic hydrolysates by Escherichia coli with regulated glucose utilization
(BioMed Central, 2018-05-02)Background: Lignocellulosic ethanol could offer a sustainable source to meet the increasing worldwide demand for fuel. However, efficient and simultaneous metabolism of all types of sugars in lignocellulosic hydrolysates ... -
In vivo bioluminescence imaging of the spatial and temporal colonization of lactobacillus plantarum 423 and enterococcus mundtii ST4SA in the intestinal tract of mice
(BMC (part of Springer Nature), 2018-10-30)Background: Lactic acid bacteria (LAB) are major inhabitants and part of the normal microflora of the gastrointestinal tract (GIT) of humans and animals. Despite substantial evidence supporting the beneficial properties ... -
Interpretation of microbiological reports
(Continuing Medical Education (CME), 2008-12)The quality of a laboratory report is influenced by many variables such as the quality of the specimen collected, the time of transporting the specimen to the laboratory and the provision of appropriate and correct ... -
Isolation and identification of iron ore-solubilising fungus
(ASSAF, 2010-09)Potential mineral-solubilising fungi were successfully isolated from the surfaces of iron ore minerals. Four isolates were obtained and identified by molecular and phylogenetic methods as close relatives of three different ... -
Killer yeasts - cause of stuck fermentations in a wine cellar
(South African Society for Enology and Viticulture, 1986)Sluggish fermentations in five fermenters in a wine cellar were investigated. Methylene blue-stains of yeast suspensions revealed that approximately 90% of the total yeast population in each of the fermenters were dead. ...
