Browsing Faculty of Applied Sciences by Title
Now showing items 32-51 of 310
-
Azide-alkyne cycloaddition en route to 1H-1,2,3-triazole-tethered 7-chloroquinoline-isatin chimeras: Synthesis and antimalarial evaluation
(Elsevierhttp://www.sciencedirect.com/science/article/pii/S0223523413000603/pdfft?md5=981f7a91cb361319d6a41ded99e81abd&pid=1-s2.0-S0223523413000603-main.pdf, 2013-04)We describe the synthesis and antimalarial activities of 1H-1,2,3-triazole tethered 7-chloroquinoline-isatin hybrids. Activity against cultured parasites was dependent on the C-5 substituent of the isatin ring as well as ... -
Bioactive compounds from South African plants against Mycobacterium tuberculosis
(2016)Mycobacterium tuberculosis (MTB), the causative agent of tuberculosis (TB) has infected approximately one-third of the world population, with 9.6 million TB cases in 2014. The emergence of multi-drug resistant (MDR) and ... -
Bioactivity of famine food plants from the family: Amaranthaceae
(2009)Information regarding the nutritional value of wild food plants in Africa and current information varies from source to source. Prior to commercialization of wild foods the nutritional, ethnobotanical, medical, chemical, ... -
Biocatalytic conversion of lipids from microalgae Scenedesmus obliquus to biodiesel using Pseudomonas fluorescens lipase
(Elsevierhttp://ac.els-cdn.com/S0016236115000630/1-s2.0-S0016236115000630-main.pdf?_tid=5b69f702-905a-11e6-85a4-00000aacb35e&acdnat=1476263023_9d93458a2be6504f98da74bde714c16e, 2015-01-31)Conversion of microalgal lipids using biocatalyst is a novel and greener approach to produce biodiesel. Free and immobilized lipases from Candida sp. and Pseudomonas fluorescens along with free lipases from porcine pancreas ... -
Biocontrol of Listeria monocytogenes ATCC 7644 in fresh tomato with Probiotics
(MN Khan, 2014-10)The effectiveness of probiotics Lactobacillus bulgarius and Streptococcus salivarius as biocontrol agents against Listeria monocytogenes ATCC 7644 in fresh tomato throughout storage and their effect on the physicochemical ... -
Bioconversion of biodiesel-derived crude glycerol waste to 1,3 propanediol and gellan using adapted bacterial isolates
(2013-09-19)The continual growth of the global biodiesel industry has resulted in a proportional increase in crude glycerol production. The by-production of glycerol waste during the manufacture of biodiesel has, with recent ... -
Biodegradation of glycerol using bacterial isolates from soil under aerobic conditions
(Taylor and Francishttp://dx.doi.org/10.1080/10934529.2013.824733, 2014)Glycerol, a non-biodegradable by-product during biodiesel production is a major concern to the emerging biodiesel industry. Many microbes in natural environments have the ability to utilize glycerol as a sole carbon and ... -
Biodiesel from microalgae: A critical evaluation from laboratory to large scale production
(Elsevierhttp://www.sciencedirect.com/science/article/pii/S0306261912007088, 2013)The economically significant production of carbon-neutral biodiesel from microalgae has been hailed as the ultimate alternative to depleting resources of petro-diesel due to its high cellular concentration of lip-ids, ... -
Biodiesel production from microalgae by enzymatic transesterification
(2015)Main focus of this study is to investigate the enzymatic-conversion of microalgal lipids to biodiesel. However, preceding steps before conversion such as drying of microalgal biomass and extraction of lipids were also ... -
Biodiesel synthesis from microalgae using immobilized Aspergillus niger whole cell lipase biocatalyst
(Elsevierhttp://www.sciencedirect.com/science/article/pii/S0960148115301543, 2016)Whole cell lipase catalysis and microalgal feedstocks make overall biodiesel synthesis greener and sustainable. In this study, a novel approach of whole cell lipase-catalyzed conversion of Scenedesmus obliquus lipids was ... -
Biodiversity of anaerobic cellulolytic bacteria in landfill sites
(2001)Landfills play an important role in the removal of waste from the surroundings. There is a limit to the types of waste that can be recycled and the landfill becomes the final method of waste disposal. Because waste ... -
Biological activities of synthetic coumarin derivatives
(2016)Coumarins are naturally occurring α-benzopyrone derivatives known for their pharmacological properties such as anticoagulant, antimicrobial, anticancer, antioxidant, anti-inflammatory and antiviral properties. The ... -
Bioproduction of riboflavin by fungi using spent industrial oils
(2011)Riboflavin (vitamin B2), an essential water-soluble vitamin is commercially produced because it cannot be synthesized by vertebrates. Although this vitamin is produced chemically, bioproduction is a better option since it ... -
Biosynthesis and antibacterial activity of silver and gold nanoparticles from the leaf and callus extracts of Amaranthus dubius, Gunnera perpensa, Ceratotheca triloba and Catharanthus roseus
(2013-09-17)The biosynthesis of NPs has many advantages over the tedious, expensive and toxic physical and chemical methods of synthesis. Plants are stocked with valuable metabolites that are capable of reducing metal salts to form ... -
Biosynthesis of ZnO nanoparticles using Jacaranda mimosifolia flowers extract: Synergistic antibacterial activity and molecular simulated facet specific adsorption studies
(Elsevierhttps://www.researchgate.net/publication/304352482_Biosynthesis_of_ZnO_nanoparticles_using_Jacaranda_mimosifolia_flowers_extract_Synergistic_antibacterial_activity_and_molecular_simulated_facet_specific_adsorption_studies, 2016)The naturally occurring biomolecules present in the plant extracts have been identified to play an active role in the single step formation of nanoparticles with varied morphologies and sizes which is greener and environmen-tally ... -
A Box-Behnken Design and Response Surface Approach for the Simultaneous Determination of Chromium (III) and (VI) Using Catalytic Differential Pulse Polarography
(ESGhttp://www.electrochemsci.org/papers/vol9/91206751.pdf, 2004-09-29)The present paper describes an optimized Box-Behnken design using a catalytic-differential pulse polarograhic technique for the simultaneous determination of chromium (III) and (VI) in wastewater samples using ammonium ... -
Characterisation of biodiesel from Litsea glutinosa
(2014-08-08)Global warming is a major concern to the world’s population. It is caused by greenhouse gases that result from the burning of fossil fuel. The fossil fuel reserves are rapidly depleting as the needs and wants of man in ... -
Characterisation of the microbial communities present in an anaerobic baffled reactor utilising molecular techniques
(2005)The provision of safe and sanitary water is a constitutional right and above all, a necessity of life. As a result of the rapid urbanisation and the past policies of apartheid, a large population of South Africa dwell in ... -
Chemical composition of essential oil from the seed Arils of Strelitzia nicolai Regel & Koern from South Africa
(Taylor and Francis, 2015-02-23)The essential oil components of arils from seeds of Strelitzia nicolai were investigated by GC and GC-MS. The oil yields of dried arils obtained by hydrodistillation were 0.86 %. Twenty-five compounds representing 94.2 % ... -
Chemical composition of essential oil of Psidium cattleianum var. lucidum (Myrtaceae)
(Academic Journalshttp://www.academicjournals.org/AJB, 2012-04-12)The aim of this study was to investigate the essential oil composition of Psidium cattleianum var. lucidum from South Africa. The essential oils were extracted by hydrodistillation and the components were identified by gas ...