| Autor: |
Ramírez CX; Laboratorio de Espectroscopia Atómica y Molecular (LEAM), Universidad Industrial de Santander, Carrera 27 Calle 9, Bucaramanga, Santander 678, Colombia. emejia@uis.edu.co., Palacio Lozano DC, Jones HE, Cabanzo Hernández R, Barrow MP, Mejia-Ospino E |
| Jazyk: |
angličtina |
| Zdroj: |
The Analyst [Analyst] 2020 May 07; Vol. 145 (9), pp. 3414-3423. Date of Electronic Publication: 2020 Apr 07. |
| DOI: |
10.1039/c9an02492a |
| Abstrakt: |
Six essential oils were analyzed by Fourier transform ion cyclotron resonance mass spectrometry coupled to negative-ion electrospray ionization (ESI(-)/FT-ICR MS). ESI offers selective ionization of a compound's polar functional groups containing nitrogen and oxygen heteroatoms. ESI in negative-ion mode allows the identification of the acidic compounds. The results showed that the samples contain between 1100-3600 individual molecular compositions, which corresponds to the greatest number of species detected to date in essential oils obtained from aromatic plant material. The compositions cover a mass range between m/z 150-500 with up to 41 carbon atoms. The dominant organic constituents of the essential oils correspond to species incorporating 2-5 oxygen atoms, detected as deprotonated/sodiated/chlorinated species. A set of 580 molecular assignments were found in common across all the samples and for the first time, a set of unique molecular systems were identified, and up to 1373 species as a unique composition for each essential oil. The molecular distributions plotted in van Krevelen diagrams (classified by their H/C vs. O/C values) suggest the presence of species with long alkyl chains and low numbers of rings plus double bonds. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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