Journal of Chromatography A

2012

DOI: 10.1016/j.chroma.2012.08.016

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A versatile cryo-focussing flow switching gas chromatography inlet for trace analysis of intractable compounds

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Lesego Mmualefe

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Cited by 3 publications

References 57 publications

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Does Deconvolution Help to Disentangle the Complexities of Mammal Odors?

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2016

Chemical Signals in Vertebrates 13

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Does Deconvolution Help to Disentangle the Complexities of Mammal Odors?

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2016

Chemical Signals in Vertebrates 13

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Identification of Volatiles from the Secretions and Excretions of African Wild Dogs (Lycaon pictus)

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2012

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Gas chromatography/mass spectrometry was used to identify 103 organic compounds from urine, feces, anal glands, and preputial glands of free-ranging African wild dogs, Lycaon pictus. Aliphatic acids were the dominant class of compound in all materials. In addition to aliphatic acids, urine contained dimethyl sulfone, 1,3-propanediol, benzoic acid, 1-methyl-2,4-imidazolidinedione, and squalene as major components: feces contained indole and cholesterol; and both contained 2-piperidone, phenol, 4-methyl phenol, benzeneacetic acid, and benzenepropanoic acid and other compounds. Anal gland secretion was particularly rich in cholesterol and fatty acids, and preputial gland secretion rich in squalene. A large majority of the identified compounds have been reported from other mammals, including species sympatric with African wild dogs. Eleven of the African wild dog components have not been reported previously from mammals and have not been found in sympatric species; one component, 1-methylimidazole-5-carboxaldehyde has not been reported previously as a natural product. In the chemical profiles of their urine, feces, and anal gland secretion African wild dogs differ markedly from other canids.

Residual solvent analysis with hyper-fast gas chromatography-mass spectrometry and a liquid carbon dioxide cryofocusing in less than 90 s

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et al. 2021

Journal of Chromatography A

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