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  Alkaloids with activity against the Zika virus vector Aedes aegypti (L.) - crinsarnine and sarniensinol, two new crinine and mesembrine type alkaloids isolated from the South African Plant Nerine sarniensis 

  Masi, Marco; Cala, Antonio; Tabanca, Nurhayat; Cimmino, Alessio; Green, Ivan R.; Bloomquist, Jeffrey R.; Van Otterlo, Willem A. L.; Macias, Francisco A.; Evidente, Antonio (MDPI, 2016-10-27)

  Two new Amaryllidaceae alkaloids, belonging to the mesembrine- and crinine-types, named crinsarnine (1) and sarniensinol (2), were isolated from the dried bulbs of Nerine sarniensis together with bowdensine (3), sarniensine ...
  
  
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  Survey of ochratoxin A in South African wines 

  Stander, M. A.; Steyn, P. S. (South African Society for Enology and Viticulture, 2002)

  The mycotoxin, ochratoxin A (OTA), an important nephrotoxin, teratogen and carcinogen, is mainly produced as a secondary metabolite of Aspergillus and Penicillium species. The mycotoxin is a common contaminant of various ...
  
  
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  Synthesis of novel piperazine-linked anthranilic acids as potential small molecule kinase inhibitors 

  Chakravorty, Santanu; Klein, Hanna F.; Hodson, Luke E.; Rabillier, Matthias; Fang, Zhizhou; Richters, Andre; Pelly, Stephen C.; Rauh, Daniel; Van Otterlo, Willem A. L. (South African Chemical Institute, 2014-03)

  Substituted anthranilic acid and piperazines were used as building blocks to prepare two libraries of compounds, with the aim being that they would exhibit biochemical activity as small molecule kinase inhibitors. The ...
  
  
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  Antibacterial properties of tough and strong electrospun PMMA/PEO fiber mats filled with lanasol : a naturally occurring brominated substance 

  Andersson, Richard L.; Martínez-Abad, Antonio; Lagaron, Jose M.; Gedde, Ulf W.; Mallon, Peter E.; Olsson, Richard T.; Hedenqvist, Mikael S. (MDPI, 2014-09-09)

  A new type of antimicrobial, biocompatible and toughness enhanced ultra-thin fiber mats for biomedical applications is presented. The tough and porous fiber mats were obtained by electrospinning solution-blended poly (methyl ...
  
  
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  Inherently chiral calix[4]arenes via oxazoline directed ortholithiation : synthesis and probe of chiral space 

  Herbert, Simon A.; Van Laeren, Laura Jane; Castell, Dominic C.; Arnott, Gareth E. (Beilstein-Institut, 2014-11-25)

  The diastereoselective oxazoline-directed lithiation of calix[4]arenes is reported with diastereoselective ratios of greater than 100:1 in some instances. Notably, it has been found that the opposite diastereomer can be ...
  
  
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  Gold acyl complex formation and decarbonylation during indene synthesis from catalytically active vinylidene complexes 

  Raubenheimer, Helgard G. (Wiley, 2015-04)

  The development of targeted gold acyl complexes, which are generated from dialkynes via vinylidene intermediates, and can decarbonylate to form indenes by proto-aurolysis is highlighted.
  
  
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  Quantitative survey of 3-alkyl-2-methoxypyrazines and first confirmation of 3-ethyl-2-methoxypyrazine in South African Sauvignon blanc wines 

  Alberts, P.; Kidd, M.; Stander, M. A.; Nieuwoudt, H. H.; Tredoux, A. G. J.; De Villiers, A. J. (South African Society for Enology and Viticulture, 2013)

  3-Alkyl-2-methoxypyrazines are important aroma components in Sauvignon blanc wine, contributing to the typical vegetative character associated with the cultivar. The analysis of methoxypyrazines is highly challenging ...
  
  
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  Temporal changes in the neonatal recognition cue of Dohne Merino Lambs (Ovis aries) 

  Viviers, Marlize Z.; Burger, B. V.; Le Roux, Niel J.; Morris, John; Le Roux, Maritha (Oxford University Press (OUP), 2014-02)

  The strong bond that is formed between ewe and lamb after parturition is important for lamb survival. Evidence exists that the ewe mainly employs olfactory recognition cues to distinguish her lamb from other lambs in the ...
  
  
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  Butenolides from plant-derived smoke : natural plant-growth regulators with antagonistic actions on seed germination 

  Light, Marnie E.; Burger, B. V.; Staerk, Dan; Kohout, Ladislav; Van Staden, Johannes (American Chemical Society and American Society of Pharmacognosy, 2010-01)

  Smoke plays an intriguing role in promoting the germination of seeds of many species following a fire. Recently, a bicyclic compound containing a condensed butenolide moiety, 3-methyl-2H-furo[2,3-c]pyran-2-one (1), was ...
  
  
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  Thermal modulator array for analyte modulation and comprehensive two-dimensional gas chromatography 

  Burger, B. V.; Snyman, Tertia; Burger, Wina J. G.; Van Rooyen, Willie F. (Wiley-VCH Verlag, 2003-01)

  Segmented thermal modulators were fabricated for the modulation of column effluent in one-dimensional gas chromatography, comprehensive two-dimensional gas chromatography, and as sample introduction devices in other ...
  
  
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  Mammalian exocrine secretions XVI : constituents of secretion of supplementary sacculi of dwarf hamster, Phodopus sungorus sungorus 

  Burger, B. V.; Smit, D.; Spies, H. S. C; Schmidt, C.; Schmidt, U.; Telitsina, A. Y. (Springer Verlag, 2001-06)

  As a first step in a study of the role of the secretion of the supplementary sacculi (buccal secretion) of the dwarf hamster, Phodopus sungorus sungorus, almost complete chemical characterization of the secretion was ...
  
  
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  Mammalian pheromone studies - III : (E,E)-7,11,15-trimethyl-3methylenehexa-deca-1,6,10,14-tetraene, a new diterpene analogue of ß-farnesene from the dorsal gland of the springbok, Antidorcas marsupialis 

  Burger, B. V.; Le Roux, Maritha; Spies, H. S. C.; Trutor, Verona; Bigalke, R. C. (Elsevier, 1978)

  The secretions produced by the cutaneous glands of mammals are generally considered to be involved in conspecific chemical communication, acting as pheromones. From a review of mammalian chemical ecology it appears that, ...
  
  
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  Headspace analysis : a novel method for the production of capillary traps with ultra-thick stationary phase layers 

  Burger, B. V.; Le Roux, Maritha; Burger, Wina J. G. (John Wiley & Sons, 1990-11)

  The development by Grab and Habaich of a headspace analytical technique which organic volatiles are trapped in short capillary traps coated with a layer of fine activated charcoal particles (COTs) or a layer of a suitable ...
  
  
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  Avian exocrine secretions. I : chemical characterization of the volatile action of the uropygial secretion of the green woodhoopoe, Phoeniculus purpureus 

  Burger, B. V.; Reiter, B.; Borzyk, O.; Du Plessis, M. A. (Springer Verlag, 2004-08)

  Using gas chromatography–mass spectrometry in conjunction with auxiliary techniques such as solid phase microextraction and determination of double bond positions by means of dimethyl disulfide derivatization, 45 ...
  
  
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  Semiochemicals of the Scarabaeinae, III : identification of the attractant for the dung beetle Pachylomerus femoralis in the fruit of the Spineless monkey orange tree, Strychnos madagascariensis 

  Burger, B. V.; Petersen, W. G. B. (Dieterich'sche Verlagsbuchhandlung, Wiesbaden (now Mainz), 1991-04)

  Following the observation that the non-ball-rolling dung beetle Pachylomerus femoralis (Kirby) rolled the flesh-covered seeds from the fruit of the spineless monkey orange tree, Strychnos madagascariensis Poiret, an ...
  
  
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  Pheromones of the Scarabaeinae, II : composition of the pheromone disseminating carrier material secreted by male dung beetles of the genus Kheper 

  Burger, B. V.; Munro, Zenda; Brandt, W. F. (Dieterich'sche Verlagsbuchhandlung, Wiesbaden (now Mainz), 1990-01)

  Gel electrophoresis of the white flocculent pheromone disseminating secretions produced by males of the three dung beetle species, Kheper lumarcki, K. nigroacneus and K. subaeneus, revealed that three different proteins ...
  
  
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  Asikliese karbeenkomplekse maak eerste opslae in goudstormloop 

  Raubenheimer, Helgard G. (LitNet Academic, 2012-12)

  OPSOMMING: Die eerste karbeenkomplekse van goud is reeds in 1971 deur Bonati en Minghetti gerapporteer. Verdere ontwikkelings na die 1980’s was stadig. Sedert 2007, toe die belangstelling in goudchemie reeds geweldig ...
  
  
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  Acrolein dimer as a marker for direct detection of acrolein in wine 

  Bauer, R.; Hiten, N. F.; Crouch, A. M.; Kossmann, J.; Burger, B. V. (South African Society for Enology and Viticulture, 2012)

  Acrolein is highly toxic and its presence in wine has been correlated with the development of bitterness. Analytical detection and quantification in aqueous solutions are challenging due to high reactivity and problems ...
  
  
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  Semiochemicals of the Scarabaeinae VII : identification and synthesis of EAD-active constituents of abdominal sex attracting secretion of the male dung beetle Kheper subaeneus 

  Burger, B. V.; Petersen, W. G. B.; Weber, W. G.; Munro, Z. M. (Springer Verlag, 2002-12)

  Using gas chromatography with flame ionization detection (FID) and electroantennographic detection (EAD) in parallel, butanoic acid, skatole, and (E)-2,6-dimethyl-6-octen-2-ol were identified as constituents of the abdominal ...
  
  
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  The defouling of membranes using polymer beads containing magnetic micro particles 

  McLachlan, David (Water Research Commission (WRC), 2010-10)

  Polymer membranes provide a good method of obtaining potable water but, as membranes always foul during water purification, the flux drops with time. Methods of physical cleaning of the polymer membranes, which do not ...
  
  
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  A comparative study of regenerated bamboo, cotton and viscose rayon fabrics. Part 1 : Selected comfort properties 

  Gericke, Adine; Van Der Pol, Jani (South African Association of Family Ecology and Consumer Sciences (SAAFECS), 2010)

  ENGLISH ABSTRACT: Regenerated bamboo, also known as bamboo viscose, is a man-made cellulose fibre that has recently appeared on the market as an apparel and home-furnishing textile. The products are marketed as having ...
  
  
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  Characterization of volatiles and aroma-active compounds in honeybush (Cyclopia subternata) by GC-MS and GC-O analysis 

  Le Roux, Maritha.; Cronje, J. Christel; Burger, B. V.; Joubert, Elizabeth (American Chemical Society, 2012-03)

  Volatile organic compounds (VOCs) in fermented honeybush, Cyclopia subternata, were sampled by means of a high-capacity headspace sample enrichment probe (SEP) and analyzed by gas chromatography-mass spectrometry (GC-MS). ...
  
  
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  Olfactory cue mediated neonatal recognition in sheep, Ovis aries 

  Burger, B. V.; Viviers, Marlize Z.; Le Roux, Neil J.; Morris, John; Bekker, Jan P. I.; Le Roux, Maritha (Springer Verlag, 2011-10)

  The strong bond between ewe and lamb formed shortly after parturition is an important factor in lamb survival. Evidence exists that a ewe can distinguish her lamb by its unique smell, but the constituents of such a putative ...
  
  
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  Lizard epidermal gland secretions II : chemical characterization of the generation gland secretion of the sungazer, Cordylus giganteus 

  Louw, Stefan; Burger, B. V.; Le Roux, Maritha; Van Wyk, Johannes H. (American Chemical Society and American Society of Pharmacognosy, 2011-06)

  In lizards, the epidermal glands of the femoral and precloacal regions are involved in the production of semiochemicals. In addition to its femoral glands, the giant girdled lizard, or sungazer, Cordylus giganteus, which ...
  
  
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  Headspace gas analysis : quantitative trapping and thermal desorption of volatiles using fused-silica open tubular capillary traps 

  Burger, B. V.; Munro, Zenda (Elsevier, 1986)

  A system has been devised with which volatiles can be effectively trapped from headspace gas samples at relatively high flow-rates. Material is trapped in fused-silica capillary traps, 1 m in length, and coated with either ...
  
  
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  Simplified analysis of organic compounds in headspace and aqueous samples by high-capacity sample enrichment probe 

  Burger, B. V.; Marx, Brenda; Le Roux, Maritha; Burger, W. J. G. (Elsevier, 2006-07)

  A sample enrichment probe (SEP) consisting of a thin rod of an inert material and provided at one end with a short sleeve of polydimethylsilicone rubber was used for the high-capacity sample enrichment of analytes from ...
  
  
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  Semiochemicals of the Scarabaeinae VIII : identification of active constituents of the abdominal sex-attracting secretion of the male dung beetle, Kheper bonellii, using gas chromatography with flame ionization and electroantennographic detection in parallel 

  Burger, B. V.; Petersen, W. G. B.; Ewig, B. T.; Neuhaus, J.; Tribe, G. D.; Spies, H. S. C.; Burger, W. J. G. (Elsevier, 2008-04)

  Using gas chromatography with flame ionization detection and electroantennographic detection in parallel (GC-FID/EAD), the active constituents of the sex attractant of male dung beetles of Kheper bonellii were located in ...
  
  
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  Development of second-generation sample enrichment probe for improved sorptive analysis of volatile organic compounds 

  Burger, B. V.; Le Roux, M.; Marx, B.; Herbert, S. A.; Amakali, K. T. (Elsevier, 2011-03)

  The sample enrichment probe (SEP) has recently been introduced as a user-friendly and cost-effective method for the sorptive extraction of volatile organic analytes from gaseous and aqueous samples for GC and GC-MS analyses. ...
  
  
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  Mammalian exocrine secretions : X. Constituents of preorbital secretion of grysbok, Raphicerus melanotis 

  Burger, B. V.; Tien, F-C.; Le Roux, M.; Mo, W-P. (Springer Verlag, 1996-04)

  Using electron impact and chemical ionization mass spectrometry with methane and nitric oxide as reactant gases in conjunction with mass spectral analysis of the dimethyl disulfide derivatives of unsaturated constituents, ...
  
  
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  Mammalian exocrine secretions IX : constituents of preorbital secretion of oribi, Ourebia ourebi 

  Mo, W.-P.; Burger, B. V.; Le Roux, M.; Spies, H. S. C. (Springer Verlag, 1995-08)

  Using gas chromatography-mass spectrometry in conjunction with ancillary techniques such as chemical ionization with different reactant gases, determination of the position of double bonds by means of dimethyl disulfide ...
  
  

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