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Article
2023
LC‐Orbitrap‐HRMS determination of two novel plastochromanol homologues
LC‐Orbitrap‐HRMS determination of two novel plastochromanol homologues
Abstract (English)
Scope:
The antioxidant plastochromanol-8 (PC-8) is a tocochromanol which differs from γ-tocotrienol in having an unsaturated side chain of eight instead of three isoprene units. The recent isolation of PC-8 from flaxseed oil indicates the additional presence of lower shares of two previously unknown homologues, plastochromanol-7 (PC-7) and plastochromanol-9 (PC-9), which feature seven and nine isoprenoid units respectively on the γ-chromanol backbone. Here, a fast LC-Orbitrap-HRMS method is applied for the determination of PC-7 and PC-9 in seven plant oils and a plant extract.
Methods and results:
The presence of PC-7, PC-8, and PC-9 is confirmed in all eight investigated samples by LC-Orbitrap-HRMS analysis after saponification. PC-8 amounts of ≈315–350 mg kg−1 in two flaxseed oils, ≈75 mg kg−1 in rapeseed oil, ≈38 mg kg−1 in camelina oil, ≈80–120 mg kg−1 in two mustard oils, ≈90 mg kg−1 in candle nut oil, and ≈900 mg kg−1 dry weight in Cecropia leaves are determined by quantification. Semi-quantification of PC-7 and PC-9 indicated the presence of ≈0.1–1% of PC-7 and PC-9 in varied relative ratios.
Conclusion:
The novel plastochromanol homologues are of particular interest to researchers with focus on vitamin E and other tocochromanols because of their unexplored bioactivity.
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Molecular nutrition and food research, 67 (2023), 24.
https://doi.org/10.1002/mnfr.202300333.
ISSN: 1613-4133
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660 Chemical engineerin
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BibTeX
@article{Hammerschick2023,
url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16144},
doi = {10.1002/mnfr.202300333},
author = {Hammerschick, Tim and Graf, Jana and Vetter, Walter et al.},
title = {LC‐Orbitrap‐HRMS determination of two novel plastochromanol homologues},
journal = {Molecular nutrition and food research},
year = {2023},
volume = {67},
number = {24},
}