Fig. 4: Partial GC-QToF MS Extracted Ion Chromatograms showing the elution of alkylresorcinols in extract LAN16-33. | Nature Communications

Fig. 4: Partial GC-QToF MS Extracted Ion Chromatograms showing the elution of alkylresorcinols in extract LAN16-33.

From: Neolithic culinary traditions revealed by cereal, milk and meat lipids in pottery from Scottish crannogs

Fig. 4

Drawn in black is the Extracted Ion Chromatogram of m/z 268.1315, the base peak in spectra of trimethylsilylated alkylresorcinols (AR). Drawn in blue, red, and green are Extracted Ion Chromatograms of m/z 548.4445, m/z 562.4602 and m/z 576.4833, which are the molecular ions of AR-21, the internal standard AR-22 (ISTD, added at level of 50 ng/g to samples) and AR-23, respectively. Both ions in combination with the retention time allow the unambiguous identification of the alkylresorcinol homologues.

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