Browsing Department of Microbiology by Title
Now showing items 106-125 of 317
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Ecology of biological sulfate removal
(Stellenbosch : Stellenbosch University, 2003-04)ENGLISH ABSTRACT: A laboratory-scale model was used to simulate biological sulfate removal. The focus of the research was microbial community response, such as the relative abundance of functional groups to changes in ... -
Economic risks due to declining water quality in the Breede River catchment
(South African Water Research Commission, 2018-07-03)Water is a critical resource necessary to support social and economic development. Economic growth and, in particular, the growth of urban and peri-urban areas, however results in declining water quality which threatens ... -
Effect of carbon on whole-biofilm metabolic response to high doses of streptomycin
(Frontiers Media, 2015)Biofilms typically exist as complex communities comprising multiple species with the ability to adapt to a variety of harsh conditions. In clinical settings, antibiotic treatments based on planktonic susceptibility tests ... -
The effect of conventional herbicides, used for the control of alien vegetation on microbial communities within freshwater biofilms
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Freshwater streams in South Africa are heavily permeated with invasive plant species. These invasive plant species pose a major threat to native vegetations by competing for available ecosystem resources. ... -
The effect of dissolved oxygen on the development of manganese oxidizing - and reducing biofilms in the lower blyde irrigation system
(Stellenbosch : Stellenbosch University, 2018-12-11)ENGLISH ABSTRACT: The Blyderiver dam in Mpumalanga is an important source of water for the irrigation of a variety of produce on farms in Limpopo and Mpumalanga. Water from this dam is used for gravity fed irrigation to ... -
The effect of fire scars on microbial diversity of fynbos soil
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Microbial communities (bacteria, archaea, fungi, protista and viruses) are essential for the maintenance of a healthy balance in soil ecosystems. There are many factors that influence and disrupt this ... -
The effect of lactic acid bacteria and fungi on the malting of barley
(Stellenbosch : Stellenbosch University, 2013-03)ENGLISH ABSTRACT: Barley malt is the predominant raw material for beer brewing world-wide. To meet consumer demand, a constant high quality malt product is required. Malt quality is determined by the degree of substrate ... -
Effect of rooibos and honeybush tea extracts against Botrytis cinerea
(SASEV, 2008-02)Green tea extracts from the indigenous South African rooibos (Aspalathus linearis) and honeybush (Cyclopia species) plants were evaluated as potential antifungal agents against the plant pathogen Botrytis cinerea. When ... -
Effect of soil covers on coal waste dumps in KwaZulu-Natal on abiotic factors and bacteria causing acid mine drainage
(Stellenbosch : Stellenbosch University, 1997-03)ENGLISH ABSTRACT: The activity of iron-oxidizing bacteria, for example, Thiobacillut. ferrooxidans, in the outer layers of coal waste dumps results in the oxidation of pyrite with the formation of large volumes of acid ... -
The effects of native Saccharomyces cerevisiae snare gene over expression on Heterologous cellulase secretion
(Stellenbosch : Stellenbosch University, 2015-12)ENGLISH ABSTRACT: The budding yeast Saccharomyces cerevisiae has been successfully utilized in several industrial sectors and has over the last decade emerged as a promising host for the production of valuable heterologous ... -
The efficiency of a Swoxid prototype and an antimicrobial nanofiber membrane as POU filters
(Stellenbosch : Stellenbosch University, 2020-03)ENGLISH ABSTRACT: Clean water is a scarce resource that numerous individuals lack access to. Resultantly, these individuals resort to using surface waters which leaves them exposed to waterborne diseases if they do not ... -
Elucidating the role of growth rate on the production of a fusion protein under regulation of the hp4d promoter by Yarrowia lipolytica
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH SUMMARY: Exenatide (Byetta®) is a type 2 diabetic drug which decreases the blood glucose level. Treatment using this drug is expensive due to its costly production by chemical synthesis therefore it is not an ... -
Emergomyces africanus in soil, South Africa
(Centers for Disease Control and Prevention, 2018-02)We detected Emergomyces africanus, a thermally dimorphic fungus that causes an HIV-associated systemic mycosis, by PCR in 18 (30%) of 60 soil samples from a wide range of habitats in South Africa. Direct and indirect culture ... -
Engineering a fungal β-fructofuranosidase
(Stellenbosch : Stellenbosch University, 2015-04)ENGLISH ABSTRACT: β-fructofuranosidases are hydrolytic enzymes that act on sucrose to yield the products glucose and fructose. Under high substrate conditions these enzymes display fructosyltransferase activity which results ... -
Engineering cellulolytic ability into bioprocessing organisms
(Springer-Verlag, 2010-03)Lignocellulosic biomass is an abundant renewable feedstock for sustainable production of commodities such as biofuels. The main technological barrier that prevents widespread utilization of this resource for production of ... -
Engineering of a novel cellulose-adherent cellulolytic Saccharomyces cerevisiae for cellulosic biofuel production
(Springer Nature, 2016)Cellulosic biofuel is the subject of increasing attention. The main obstacle toward its economic feasibility is the recalcitrance of lignocellulose requiring large amount of enzyme to break. Several engineered yeast strains ... -
Engineering of Pichia stipitis for enhanced xylan utilization
(Stellenbosch : Stellenbosch University, 2003-12)ENGLISH ABSTRACT: Plant biomass, the most abundant renewable resource in nature, consists of matrices of mainly lignin, cellulose, hemicellulose as well as inorganic components. Xylan, the major hemicellulose component ... -
Enhancing xylose utilisation during fermentation by engineering recombinant Saccharomyces cerevisiae strains
(Stellenbosch : Stellenbosch University, 2007-12)ENGLISH ABSTRACT: Xylose is the second most abundant sugar present in plant biomass. Plant biomass is the only potential renewable and sustainable source of energy available to mankind at present, especially in the ... -
The enterotube system in the identification of Enterobacteriaceae and Yersinia
(Health & Medical Publishing Group, 1974)A trial of the Enterotube system for the identification of Enterobacteriaceae and a comparison with the methods at present in use in the Tygerberg Hospital Laboratory, were carried out. One hundred cultures belonging to ... -
Enzyme-coupled assay of acetylxylan esterases on monoacetylated 4-nitrophenyl beta-D-xylopyranoside
(Elsevier, 2004-03)Three different monoacetates of 4-nitrophenyl beta-D-xylopyranoside were tested as substrates for beta -xylosidase and for microbial carbohydrate esterases and a series of non-hemicellulolytic esterases. The acetyl group ...
