scholarly journals Terpenoid Compositions of Resins from Callitris Species (Cupressaceae)

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3384 ◽  
Author(s):  
Bernd R.T. Simoneit ◽  
Robert E. Cox ◽  
Daniel R. Oros ◽  
Angelika Otto
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Natural Product ◽  
Environmental Fate ◽  
Environmental Applications ◽  
Gas Chromatography Mass Spectrometry ◽  
Molecular Biomarker ◽  
Transport Studies ◽  
The Common ◽  
Natural Product Compounds

The environmental fate of conifer resins and their natural product compounds as mixtures is of importance for source, alteration, and transport studies. The compound compositions of resins of the common Callitris species (Cupressaceae) based on gas chromatography-mass spectrometry have not been reported. Results show that diterpenoids were the most abundant components and callitrisic acid was present in the resin extracts of all Callitris species analyzed. Significant amounts of 4-epi-pimaric and sandaracopimaric acids, with lesser communic, ozic, and lambertianic acids, were also in the mixtures. Phenolic diterpenoids, for example, ferruginol, hinokiol, were found in trace quantities in some samples. Thus, callitrisic acid and 4-epi-pimaric acid are the characteristic diterpenoids of Callitris species that are amenable to molecular biomarker analyses in geological or environmental applications.

Morphology and Chemical Contents of Dufour Glands of Pseudomyrmex Ants (Hymenoptera: Formicidae)

1990 ◽  
Vol 45 (6) ◽  
pp. 691-697 ◽  
Author(s):  
A. B. Attygalle ◽  
J. P. J. Billen ◽  
B. D. Jackson ◽  
E. D. Morgan
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Gas Chromatography ◽  
Large Volume ◽  
Gas Chromatography Mass Spectrometry ◽  
Epithelial Lining ◽  
Isopropyl Esters ◽  
The Common ◽  
Alate Female ◽  
Chemical Contents

Abstract The morphology and ultrastructure of the Dufour gland of a pseudomyrmecine ant is described. The gland has an unusually large volume but possesses a very thin epithelial lining. Its morphology does not constitute a specific subfamily character as in some ant subfamilies. Analysis by gas chromatography-mass spectrometry of the glands of three species showed them all to be rich in saturated linear hydrocarbons (C17:0 and C15:0 dominant) and isopropyl esters of the common fatty acids. Each species produces its own characteristic mixture of these substances. The most abundant ester in Pseudomyrmex ferruginea is isopropyl oleate and in P. sp. A it is isopropyl palmitate, in P.flavicornis there is only a trace of isopropyl palmitate. An alate female of P. ferruginea contained a very similar mixture to that of the workers.

scholarly journals Terpenoids of the Swamp Cypress Subfamily (Taxodioideae), Cupressaceae, an Overview by GC-MS

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3036 ◽  
Author(s):  
Simoneit ◽  
Otto ◽  
Oros ◽  
Kusumoto
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Natural Product ◽  
Cryptomeria Japonica ◽  
Taxodium Distichum ◽  
Mass Spectrometric ◽  
Gas Chromatography Mass Spectrometry ◽  
Polar Compound ◽  
Mass Spectrometric Data ◽  
Spectrometric Data

The resins bled from stems and in seed cones and leaves of Cryptomeria japonica, Glyptostrobus pensilis, Taxodium distichum, and T. mucronatum were characterized to provide an overview of their major natural product compositions. The total solvent extract solutions were analyzed as the free and derivatized products by gas chromatography-mass spectrometry to identify the compounds, which comprised minor mono- and sesquiterpenoids, and dominant di- and triterpenoids, plus aliphatic lipids (e.g., n-nonacosan-10-ol). Ferruginol, 7α-p-cymenylferruginol, and chamaecydin were the major characteristic markers for the Taxodioideae conifer subfamily. The mass spectrometric data can aid polar compound elucidation in environmental, geological, archeological, forensic and pharmaceutical studies.

scholarly journals The Use of Gas Chromatography-Mass Spectrometry for the Diagnosis and Study of Metabolic Disorders I. the Screening and Identification of Urinary and Serum Amino Acids

1973 ◽  
Vol 26 (4) ◽  
pp. 831 ◽  
Author(s):  
KM Williams ◽  
B Halpern
Keyword(s):  
Mass Spectrometry ◽  
Amino Acids ◽  
Gas Chromatography ◽  
Metabolic Disorders ◽  
Alkyl Ester ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry ◽  
Serum Amino Acids ◽  
Screening And Identification ◽  
The Common

The common urinary and serum amino acids have been separated and identified by gas chromatography and mass spectrometry of their neopentylidene alkyl ester derivatives.

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