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Browsing Research Articles (Chemistry) by Author "Naude, Yvette"
Now showing items 1-20 of 21
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Advancing the analytical toolkit in the investigation of vector mosquito host biting site selection Wooding, Madelien; Dodgen, Tyren; Rohwer, Egmont Richard; Naude, Yvette (Wiley, 2024-01)High-resolution mass spectrometry and ion mobility spectrometry provide additional confidence in biological marker discovery and elucidation by adding additional peak capacity through physiochemical separation orthogonal ...
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Van Vuuren, Estefan; Naude, Yvette (South African Chemical Institute, 2019)We introduce a compact mini-denuder air sampling device consisting of a regular gas chromatograph (GC) inlet liner for the simultaneous concentration of separate airborne gaseous and particulate phases in a single-step. ...
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Wooding, Madelien; Rohwer, Egmont Richard; Naude, Yvette (Springer, 2020-09)Volatile organic compounds (VOCs) and semi-VOCs detected on the human skin surface are of great interest to researchers in the fields of metabolomics, diagnostics, and skin microbiota and in the study of anthropophilic ...
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Wooding, Madelien; Rohwer, Egmont Richard; Naude, Yvette (Elsevier, 2017-09-01)The presence of micropollutants in the aquatic environment is a worldwide environmental concern. The diversity of micropollutants and the low concentration levels at which they may occur in the aquatic environment have ...
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Wooding, Madelien; Naude, Yvette; Rohwer, Egmont Richard; Bouwer, Marc Clement (BioMed Central, 2020-02)The use of semiochemicals in odour-based traps for surveillance and control of vector mosquitoes is deemed a new and viable component for integrated vector management programmes. Over 114 semiochemicals have been identifed, ...
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Makhubela, Portia Colisile Koketso; Rohwer, Egmont Richard; Naude, Yvette (Elsevier, 2023-12)Tuberculosis (TB) remains a global health concern. This study aimed to investigate the potential of human skin volatile organic compounds (VOCs) as prospective biomarkers for TB diagnosis. It employed a non-invasive approach ...
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Wooding, Madelien; Rohwer, Egmont Richard; Naude, Yvette (Elsevier, 2017-05)Many rural dwellers and inhabitants of informal settlements in South Africa are without access to treated water and collect untreated water from rivers and dams for personal use. Endocrine disrupting chemicals (EDCs) have ...
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Akanni, Gabriel Bidemi; Naude, Yvette; De Kock, Henrietta Letitia; Buys, E.M. (Elna Maria) (Springer, 2018-07)The aim of this study was to investigate the diversity of Bacillus species in dawadawa; aiding potential starter cultures selection for alkaline fermentation of bambara groundnut into dawadawa-type condiments based on their ...
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Naude, Yvette; Van Rooyen, Margaretha W.; Rohwer, Egmont Richard (Elsevier, 2011-12)The origin of the so-called “fairy circles” has not yet been established. Carbon monoxide (as an indicator of a natural gas microseep) was monitored inside and outside of the selected fairy circles in the Namib, Namibia, ...
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Gorst-Allman, Charles P.; Naude, Yvette (South African Chemical Institute, 2016)Several off-the-shelf products (personal care, fragrances and oils, food) were analyzed by solid phase micro-extraction gas chromatography-mass spectrometry to determine the most prevalent volatile compounds responsible ...
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Roodt, A.P. (Alexis); Naude, Yvette; Stoltz, Anton Carel; Rohwer, Egmont Richard (Elsevier, 2018-10)Volatile organic compounds (VOCs) emanating from the surfaces of human skin are of great interest to researchers in medical and forensic fields, as well as to biologists studying the ecology of blood-feeding insect vectors ...
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Naude, Yvette; Rohwer, Egmont Richard (Elsevier, 2013-01)Pinotage wine from several South African wine cellars has been produced with a novel coffee flavour. We have investigated this innovative coffee effect using in house developed solventless sampling and fractionating o ...
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Naude, Yvette; Makuwa, Ramogale; Maharaj, Vinesh J. (Elsevier, 2016-09)Wild ginger, Siphonochilus aethiopicus, is a traditional remedy for the treatment of allergic asthma and other conditions. Preparations include hot infusions of rhizomes and steaming of the rhizomes and inhalation of the ...
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Van der Wat, Leandri; Dovey, Martin; Naude, Yvette; Forbes, Patricia B.C. (South African Chemical Institute, 2013)Multi-channel polydimethylsiloxane rubber traps were used to sample the headspace of rosemary samples (two essential oils from different sources, one oleoresin and one dried herb) followed by comprehensive two-dimensional ...
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Wooding, Madelien; Dodgen, Tyren; Rohwer, Egmont Richard; Naude, Yvette (Wiley, 2021-02)Human skin surface chemical cues comprise a complex mixture of compounds that mosquitoes use to locate and select their human host, based on inter- and intra-human variation in chemical profiles. The complexity of the skin ...
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Geldenhuys, Genna-Leigh; Rohwer, Egmont Richard; Naude, Yvette; Forbes, Patricia B.C. (Elsevier, 2015-02)Concentrations of diesel particulate matter and polycyclic aromatic hydrocarbons (PAHs) in platinum mine environments are likely to be higher than in ambient air due to the use of diesel machinery in confined environments. ...
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Naude, Yvette; Van Aardt, Marleen; Rohwer, Egmont Richard (Elsevier, 2009-04)A headspace sampling method is described for concentrating milk volatiles onto a multi-channel open tubular silicone rubber trap (MCT) for thermal desorption into a GC-FID. Sections of the chromatographic profile, single ...
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Wooding, Madelien; Rohwer, Egmont Richard; Naude, Yvette (Wiley, 2020-11)Variation in inter-human attractiveness to mosquitoes, and the preference of mosquitoes to bite certain regions on the human host, are possible avenues for identifying lead compounds as potential mosquito attractants or ...
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Naude, Yvette; Rohwer, Egmont Richard (Elsevier, 2012-06)The organochlorine insecticide DDT (1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane) is still used for malaria vector control in certain areas of South Africa. The strict Stockholm Convention on Persistent Organic Pollutants ...
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Naude, Yvette; Rohwer, Egmont Richard (Elsevier, 2012-06)In rural parts of South Africa the organochlorine insecticide DDT (1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane) is still used for malaria vector control where traditional dwellings are sprayed on the inside with small ...
Now showing items 1-20 of 21