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The development of an ultra performance liquid chromatography-coupled atmospheric pressure chemical ionization mass spectrometry assay for seven adrenal steroids.Survey of 3-alkyl-2-methoxypyrazine content of South African Sauvignon blanc wines using a novel LC-APCI-MS/MS method.Nitrogen supply and abiotic stress influence canavanine synthesis and the productivity of in vitro regenerated Sutherlandia frutescens microshoots.Survey of South African fruit juices using a fast screening HILIC-MS method.Evidence of symbiosis between the soil yeast Cryptococcus laurentii and a sclerophyllous medicinal shrub, Agathosma betulina (Berg.) Pillans.Assessment of glutathione levels in model solution and grape ferments supplemented with glutathione-enriched inactive dry yeast preparations using a novel UPLC-MS/MS method.Hydrophilic interaction chromatographic analysis of anthocyanins.Comprehensive Two-Dimensional Hydrophilic Interaction Chromatography (HILIC) × Reversed-Phase Liquid Chromatography Coupled to High-Resolution Mass Spectrometry (RP-LC-UV-MS) Analysis of Anthocyanins and Derived Pigments in Red Wine.Inhibition of malaria parasite blood stages by tyrocidines, membrane-active cyclic peptide antibiotics from Bacillus brevis.Comprehensive phenolic profiling of Cyclopia genistoides (L.) Vent. by LC-DAD-MS and -MS/MS reveals novel xanthone and benzophenone constituents.Advanced ultra high pressure liquid chromatography-tandem mass spectrometric methods for the screening of red wine anthocyanins and derived pigments.Speciation of [Pt(IV) Cl6-n Brn]2- (n = 0-6) and some of their mono-aquated [Pt(IV) Cl5-n Brn (H2O)]- (n = 0-5) anions in solution at low concentrations by means of ion-pairing reversed-phase ultra-high-performance liquid chromatography coupled to eDirect surfactin-gramicidin S antagonism supports detoxification in mixed producer cultures of Bacillus subtilis and Aneurinibacillus migulanus.Manipulation of the tyrothricin production profile of Bacillus aneurinolyticus.An Electrospray Ionization Mass Spectrometry Study on the "In Vacuo" Hetero-Oligomers Formed by the Antimicrobial Peptides, Surfactin and Gramicidin S.Comprehensive two-dimensional liquid chromatographic analysis of anthocyanins.Toward unraveling grape tannin composition: application of online hydrophilic interaction chromatography × reversed-phase liquid chromatography-time-of-flight mass spectrometry for grape seed analysis.A high-throughput UPC2-MS/MS method for the separation and quantification of C19 and C21 steroids and their C11-oxy steroid metabolites in the classical, alternative, backdoor and 11OHA4 steroid pathways.High-throughput analysis of 19 endogenous androgenic steroids by ultra-performance convergence chromatography tandem mass spectrometry.Comprehensive Three-Dimensional LC × LC × Ion Mobility Spectrometry Separation Combined with High-Resolution MS for the Analysis of Complex SamplesScreening of Commercial Hydrolases for the Degradation of Ochratoxin AToxicokinetics of ochratoxin A in vervet monkeys ( Cercopithecus aethiops )Solvent Extraction of Polyphenolics from the Indigenous African Fruit and Characterization by LC-HRMSFood ingredient extracts of Cyclopia subternata (Honeybush): variation in phenolic composition and antioxidant capacity.Resistance in Maize Inbred Lines to Fusarium verticillioides and Fumonisin Accumulation in South AfricaUsing LC-MSMS to assess glutathione levels in South African white grape juices and wines made with different levels of oxygenQuantification of melamine absorption, distribution to tissues, and excretion by sheepDetermination of sotolon content in South African white wines by two novel HPLC-UV and UPLC-MS methodsThe Implication of Chemotypic Variation on the Anti-Oxidant and Anti-Cancer Activities of Sutherlandia frutescens (L.) R.Br. (Fabaceae) from Different Geographic LocationsEsomeprazole to treat women with preterm preeclampsia: a randomized placebo controlled trialMeasuring Thiols in Single Cultivar South African Red Wines Using 4,4-Dithiodipyridine (DTDP) Derivatization and Ultraperformance Convergence Chromatography-Tandem Mass SpectrometryDetailed Phenolic Characterization of Protea Pure and Hybrid Cultivars by Liquid Chromatography-Ion Mobility-High Resolution Mass Spectrometry (LC-IM-HR-MS)Polyphenolic and Physicochemical Properties of Simple-Spined Num-Num (Carissa edulis) Fruit Harvested at Ripe Stage of MaturationPatterns of Variation and Chemosystematic Significance of Phenolic Compounds in the Genus Cyclopia (Fabaceae, Podalyrieae)
P50
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wetenschapper
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Marietjie A Stander
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Marietjie A Stander
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Marietjie A. Stander
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Marietjie A Stander
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Marietjie A Stander
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Marietjie A Stander
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Marietjie A. Stander
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Marietjie A. Stander
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