Nontarget analysis of Murchison soluble organic matter by high-field NMR spectroscopy and FTICR mass spectrometry

2015 ◽  
Vol 53 (9) ◽  
pp. 754-768 ◽  
Author(s):  
N. Hertkorn ◽  
M. Harir ◽  
Ph. Schmitt-Kopplin
Keyword(s):  
Mass Spectrometry ◽  
Organic Matter ◽  
Nmr Spectroscopy ◽  
High Field ◽  
Soluble Organic Matter ◽  
Fticr Mass Spectrometry ◽  
Nontarget Analysis

scholarly journals Trichilones A–E: New Limonoids from Trichilia adolfi

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3070
Author(s):  
Mariela Gonzalez-Ramirez ◽  
Ivan Limachi ◽  
Sophie Manner ◽  
Juan C. Ticona ◽  
Efrain Salamanca ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
High Field ◽  
Chemical Constituents ◽  
Ethanol Extract ◽  
Raw 264.7 Cells ◽  
Raw 264.7 ◽  
Murine Macrophage ◽  
New Metabolites

In addition to the trichilianones A–D recently reported from Trichilia adolfi, a continuing investigation of the chemical constituents of the ethanol extract of the bark of this medicinal plant yielded the five new limonoids 1–5. They are characterized by having four fused rings and are new examples of prieurianin-type limonoids, having a ε-lactone which in 4 and 5 is α, β- unsaturated. The structures of the isolated metabolites were determined by high field NMR spectroscopy and HR mass spectrometry. The new metabolites were shown to have the ε-lactone fused with a tetrahydrofuran ring which is connected to an oxidized hexane ring joined with a cyclo-pentanone having a 3-furanyl substituent. As the crude extract possesses antileishmanial activity, the compounds were assayed for cytotoxic and antiparasitic activities in vitro in murine macrophage cells (raw 264.7 cells) and in Leishmania amazoniensis as well as L. braziliensis promastigotes. Metabolites 1–3 and 5 showed moderate cytotoxicity (between 30–94 µg/mL) but are not responsible for the antileishmanial effect of the extract.

High-field FT-ICR mass spectrometry and NMR spectroscopy to characterize DOM removal through a nanofiltration pilot plant

2014 ◽  
Vol 67 ◽  
pp. 154-165 ◽  
Author(s):  
Nuria Cortés-Francisco ◽  
Mourad Harir ◽  
Marianna Lucio ◽  
Gemma Ribera ◽  
Xavier Martínez-Lladó ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Pilot Plant ◽  
High Field ◽  
Ft Icr

Mechanisms of Humic Acids Degradation by White Rot Fungi Explored Using1H NMR Spectroscopy and FTICR Mass Spectrometry

2011 ◽  
Vol 45 (7) ◽  
pp. 2748-2754 ◽  
Author(s):  
Tzafrir Grinhut ◽  
Norbert Hertkorn ◽  
Philippe Schmitt-Kopplin ◽  
Yitzhak Hadar ◽  
Yona Chen
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Humic Acids ◽  
White Rot Fungi ◽  
White Rot ◽  
Fticr Mass Spectrometry

scholarly journals Characterization of water-soluble organic matter in urban aerosol by 1H-NMR spectroscopy

2016 ◽  
Vol 128 ◽  
pp. 235-245 ◽  
Author(s):  
Marie-Cecile G. Chalbot ◽  
Priyanka Chitranshi ◽  
Gonçalo Gamboa da Costa ◽  
Erik Pollock ◽  
Ilias G. Kavouras
Keyword(s):  
Organic Matter ◽  
Nmr Spectroscopy ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
Water Soluble ◽  
Urban Aerosol ◽  
Soluble Organic Matter

Identification of a Denitrase Activity against Calmodulin in Activated Macrophages Using High-Field Liquid Chromatography−FTICR Mass Spectrometry†

Biochemistry ◽  
2007 ◽  
Vol 46 (37) ◽  
pp. 10498-10505 ◽  
Author(s):  
Heather S. Smallwood ◽  
Natacha M. Lourette ◽  
Curt B. Boschek ◽  
Diana J. Bigelow ◽  
Richard D. Smith ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
High Field ◽  
Activated Macrophages ◽  
Fticr Mass Spectrometry

Degradation products of profenofos as identified by high-field FTICR mass spectrometry: Isotopic fine structure approach

2016 ◽  
Vol 52 (1) ◽  
pp. 10-22
Author(s):  
Dusit Angthararuk ◽  
Mourad Harir ◽  
Philippe Schmitt-Kopplin ◽  
Somyote Sutthivaiyakit ◽  
Antonius Kettrup ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Fine Structure ◽  
High Field ◽  
Degradation Products ◽  
Structure Approach ◽  
Fticr Mass Spectrometry ◽  
Isotopic Fine Structure
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