Fig. 2: UHPLC-HR-ESI MS analysis of Mann-S1. | npj Science of Food

Fig. 2: UHPLC-HR-ESI MS analysis of Mann-S1.

From: Olive oil from the 79 A.D. Vesuvius eruption stored at the Naples National Archaeological Museum (Italy)

Fig. 2

a Representative total ion current negative ion mode chromatogram of lipids and b MS/MS-based assignment of the estolide P-HS on isolated ion at m/z 537.4901. The insert shows fragment ion identification of a putative P-HS isomer (9-hexadecanoyloxyoctadecanoic acid, PubChem CID: 72189985), although several other isomers are possible. Fatty acid acronyms: A arachidic acid (C20:0), B behenic acid (C22:0), O oleic acid (C18:1), P palmitic acid (C16:0), S stearic acid (C18:0), HO hydroxyoleic acid, HP hydroxypalmitic acid, HS hydroxystearic acid, DHS dihydroxystearic acid isomer.

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