Use of Gas Chromatography-Mass Spectrometry Techniques (GC-MS, GC-MS/MS and GC-QTOF) for the Characterization of Photooxidation and Autoxidation Products of Lipids of Autotrophic Organisms in Environmental Samples
Abstract
:1. Introduction
2. Abiotic Oxidation of Lipid Components of Autotrophic Organisms
2.1. Type II Photosensitized Oxidation
2.2. Free Radical Oxidation (Autoxidation)
3. Characterization of the Oxidation Products of Lipids
3.1. Chlorophyll Phytyl Side-Chain
3.2. ∆5-Sterols
3.3. Unsaturated Fatty Acids
3.4. Pentacyclic Triterpenes
3.4.1. Lupanes
3.4.2. Ursanes and Oleanes
3.5. Dehydroabietic Acid
3.6. Highly Branched Isoprenoid (HBI) Alkenes
3.7. Alkenones
3.8. Carotenoids
4. Conclusions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Sample Availability
References
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∆5-Sterols | [M − 143.0887]+ |
---|---|
24-Nor-cholesta-5,22-dien-3β,6α/β-diols | 387.3084 |
24-Nor-cholest-5-en-3β,6α/β-diols | 389.3240 |
Cholesta-5,22-dien-3β,6α/β-diols | 401.3240 |
Cholesta-5,24-dien-3β,6α/β-diols | 401.3240 |
Cholest-5-en-3β,6α/β-diols | 403.3396 |
24-Methylcholest-5-en-3β,6α/β-diols | 417.3562 |
24-Methylcholesta-5,22-dien-3β,6α/β-diols | 415.3396 |
24-Methylcholesta-5,24/28-dien-3β,6α/β-diols | 415.3396 |
24-Ethylcholest-5-en-3β,6α/β-diols | 431.3710 |
24-Ethylcholesta-5,22-dien-3β,6α/β-diols | 429.3552 |
MUFAs | (OH-Position) m/z | (OH-Position) m/z | (OH-Position) m/z | (OH-Position) m/z |
---|---|---|---|---|
C16:1∆9 | (9-) 199.1518 a | (8-) 213.1675 a | (10-) 329.1968 b | (11-) 343.2125 b |
C16:1∆11 | (11-) 171.1206 | (10-) 185.1363 | (12-) 357.2280 | (13-) 371.2437 |
C18:1∆9 | (9-) 227.1830 | (8-) 241.1987 | (10-) 329.1968 | (11-) 343.2125 |
C18:1∆11 | (11-) 199.1518 | (10-) 213.1675 | (12-) 357.2280 | (13-) 371.2437 |
C20:1∆9 | (9-) 255.2139 | (8-) 269.2295 | (10-) 329.1968 | (11-) 343.2125 |
C20:1∆11 | (11-) 227.1830 | (10-) 241.1987 | (12-) 357.2280 | (13-) 371.2437 |
C22:1∆9 | (9-) 283.2451 | (8-) 297.2607 | (10-) 329.1968 | (11-) 343.2125 |
C22:1∆11 | (11-) 255.2139 | (10-) 269.2295 | (12-) 357.2280 | (13-) 371.2437 |
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Rontani, J.-F. Use of Gas Chromatography-Mass Spectrometry Techniques (GC-MS, GC-MS/MS and GC-QTOF) for the Characterization of Photooxidation and Autoxidation Products of Lipids of Autotrophic Organisms in Environmental Samples. Molecules 2022, 27, 1629. https://doi.org/10.3390/molecules27051629
Rontani J-F. Use of Gas Chromatography-Mass Spectrometry Techniques (GC-MS, GC-MS/MS and GC-QTOF) for the Characterization of Photooxidation and Autoxidation Products of Lipids of Autotrophic Organisms in Environmental Samples. Molecules. 2022; 27(5):1629. https://doi.org/10.3390/molecules27051629
Chicago/Turabian StyleRontani, Jean-François. 2022. "Use of Gas Chromatography-Mass Spectrometry Techniques (GC-MS, GC-MS/MS and GC-QTOF) for the Characterization of Photooxidation and Autoxidation Products of Lipids of Autotrophic Organisms in Environmental Samples" Molecules 27, no. 5: 1629. https://doi.org/10.3390/molecules27051629