{
  "abstract": "17 novel hydroxy fatty acids derived from LA, ALA, and GLA were characterized in evening 2 primrose, borage and hemp oil. Structural characterization was based on semi-synthetic 3 standards generated by autoxidation, photoxidation and enzymatic conversions, combined 4 with LC-MS and GC-MS analysis with multiple derivatization strategies. Novel oxylipins 6-5 HODE and 7-HODE, presumably formed as site-products of Δ6-desaturase, showed 6 characteristic patterns in GLA-rich oils: 6-HODE occurred at high levels in in evening primrose 7 oil (23 ± 1 mg/100 g) and in borage oil (84 ± 7 mg/100 g), whereas 7-HODE (28.7 ± 8 0.6 mg/100 g) was abundant in hemp oil. These novel oxylipins occurred in similar 9 concentrations in both cold-pressed and refined oils and did not relate to the oxidation status. 10 Although, the occurrence of autoxidatively formed hydroxy-LA, ALA and GLA correlated with 11 peroxide value. Overall, these findings highlight novel oxylipins as promising markers of oil 12 quality and authenticity. 13 14 15 16",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "Ariane Löwen"
    },
    {
      "name": "Lia Warja Musielak"
    },
    {
      "name": "Kathrin Plitzko"
    },
    {
      "name": "Nils Helge Schebb",
      "orcid": "0000-0003-1299-6629"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4zefjz96ghsff.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15009843/v1",
  "fulltext_url": null,
  "id": "4zefjz96ghsff",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009843/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1605|Edible Oils Quality and Analysis"
    ]
  ],
  "openalex": "W7220435084",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15009843/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-05",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/4zefjz96ghsff.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:22Z",
      "native_id": "10.26434/chemrxiv.15009843",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009843/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Edible Oils Quality and Analysis",
      "subfield": "organic"
    }
  ],
  "title": "Discovery of new octadecanoids in γ-linolenic acid rich oils",
  "title_text": "Discovery of new octadecanoids in γ-linolenic acid rich oils",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:22Z",
  "url": "https://research.draconitic.com/paper/4zefjz96ghsff",
  "venue": "ChemRxiv",
  "versions": []
}