Browsing Department of Microbiology by Title
Now showing items 276-295 of 317
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Rational Engineering of a Loop Region in the Saccharomyces cerevisiae β-fructofuranosidase
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: The increased need for chemical processes to become more environmentally friendly and the pressure for these processes to be more efficient have led to the chemical industry looking to biocatalysis. ... -
Raw starch conversion by Saccharomyces cerevisiae expressing Aspergillus tubingensis amylases
(BioMed Central, 2013-11)Background: Starch is one of the most abundant organic polysaccharides available for the production of bio-ethanol as an alternative transport fuel. Cost-effective utilisation of starch requires consolidated bioprocessing ... -
Regulated expression of the Schizosaccharomyces pombe malic enzyme gene
(Stellenbosch : Stellenbosch University, 2000-03)ENGLISH ABSTRACT: The fission yeast Schizosaccharomyces pombe is able to effectively degrade extracellular L-malate by means of a permease for the active transport of L-malate and a malic enzyme that catalyses the ... -
Regulation of the TPS1 gene expression in Saccharomyces Cerevisiae
(Stellenbosch : Stellenbosch University, 1999-03)ENGLISH SUMMARY: For many years the disaccharide trehalose was thought to be simply a carbon and energy reserve in the yeast Saccharomyces cerevisiae. However, a positive correlation between the trehalose content and ... -
Relationship between ergosterol concentrations in wine yeast and sugar fermentation at different temperatures
(South African Society for Enology and Viticulture, 1989)The effect of cellular ergosterol on the fermentation ability of four different Saccharomyces cerevisiae wine yeast strains was studied. F~rmentations were carried out at three temperatures and ergosterol concentrations ... -
Relationship between fatty acid concentrations in wine yeasts and sugar fermentation at different temperatures
(South African Society for Enology and Viticulture, 1989)The effects of temperature and fermentation stage on the cellular concentrations of unsaturated and saturated fatty acids on the fermentation abilities of four different Saccharomyces cerevisiae wine yeasts were studied ... -
Release of bacteriocins from nanofibers prepared with combinations of poly(D,L-lactide) (PDLLA) and poly(ethylene oxide) (PEO)
(MDPI, 2011)Plantaricin 423, produced by Lactobacillus plantarum, and bacteriocin ST4SA produced by Enterococcus mundtii, were electrospun into nanofibers prepared from different combinations of poly(D,L-lactide) (PDLLA) and poly(ethylene ... -
A review : the fate of bacteriocins in the human gastro-intestinal tract : do they cross the gut–blood barrier?
(Frontiers Media, 2018)The intestinal barrier, consisting of the vascular endothelium, epithelial cell lining, and mucus layer, covers a surface of about 400 m2. The integrity of the gut wall is sustained by transcellular proteins forming tight ... -
Rhizofiltration of urban effluent : microbial ecology and conceptual treatment mechanisms
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Polluted urban runoff is a challenge that is globally met by governing bodies employing best management practices (BMPs). One such BMP is rhizofiltration, a novel type of phytoremediation BMP designed ... -
Role of cultivation media in the development of yeast strains for large scale industrial use
(BioMed Central, 2005-11)Abstract: The composition of cultivation media in relation to strain development for industrial application is reviewed. Heterologous protein production and pentose utilization by Saccharomyces cerevisiae are used to ... -
Saccharomyces cerevisiae engineered for xylan utilisation
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Alternative fuels or sources of energy need to be generated to complement or replace fossil based fuels since the growing global energy demand will soon exceed the fossil fuel supply. Brazil and the USA ... -
Safety assessment of antibiotic and probiotic feed additives for Gallus gallus domesticus
(Nature Research, 2017)Antibiotics in feed select for resistant strains and is thus a threat to human health. In this study, the effect of a multi-strain probiotic and antibiotics on the growth and health of broilers was studied. Equal numbers ... -
Safety of antibiotic and probiotic feed additives for Gallus gallus domesticus
(Stellenbosch : Stellenbosch University, 2018-09-05)ENGLISH ABSTRACT: The inclusion of antibiotics in broiler feed is of great concern, as many resistant pathogenic bacteria may spread to other farming animals and humans. Alternative methods are thus required to improve ... -
The search for a biological control agent to control invasive Polistes dominula wasps in the Western Cape region, South Africa
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Polistes dominula (Christ) (Hymenoptera: Vespidae: Polistinae), also known as the European paper wasp is globally notorious as a highly invasive wasp, and invaded and established itself in five continents, ... -
Selection of probiotic lactic acid bacteria for horses based on in vitro and in vivo studies
(Stellenbosch : Stellenbosch University, 2011-12)ENGLISH ABSTRACT: The equine gastro-intestinal tract (GIT) is a relatively unexplored niche concerning the presence of natural microbiota. Studies have shown that disruption of the microbial population naturally present ... -
A simple method for the primary isolation of Mycobacterium in a carbon dioxide atmosphere
(Health & Medical Publishing Group, 1974)A simple, inexpensive method which provides increased CO2 tension for the primary isolation of mycobacteria is described. Using this technique, the primary isolation of mycobacteria from 1114 specimens of sputum, gastric ... -
Soil microbial communities associated with two commercially important plant species indigenous to the fynbos region of South Africa : cyclopia spp. (honeybush) and Aspalathus linearis (rooibos)
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT: The Cape Floristic Region (CFR) is characterized by nutrient poor soils which forged close symbiotic ties between plants and soil microorganisms for nutrient acquisition. Aspalathus linearis and Cyclopia ... -
Soil stabilization by microbial activity
(Stellenbosch : Stellenbosch University, 2003-03)ENGLISH ABSTRACT: Microorganisms play an important role in the stability and maintenance of the ecosystem and in the condition of the soil. However, in their natural environment, microorganisms often experience changing ... -
Soil yeasts, mycorrhizal fungi and biochar: their interactions and effect on wheat (Triticum aestivum L.) growth and nutrition
(Stellenbosch : Stellenbosch University, 2012-03)ENGLISH ABSTRACT: In order to test the effect of different plant growth-promoting strategies on Triticum aestivum L. (wheat), we investigated the ability of biochar and a grain-associated soil yeast, to improve the growth ... -
Some important developments in biomining during the past thirty years
(Central South University Press, Lushan South Road 932, 410083 Changsha, Hunan Province, PR China, 2011-09)A selection of significant discoveries in the general field of biomining over the past thirty years with which the author has been directly or indirectly involved will be reviewed. Early steps in the development of the ...
