Fig. 1 in A chemometric assessment of essential oil variation of three Salvia species indigenous to South Africa

Fig. 1. Typical total ion GC-MS chromatograms of essential oils of A) S. africana-lutea, B) S. lanceolata with an enlarged insert of the coeluting peaks terpinen-4-ol and β-caryophyllene and C) S. chamelaeagnea, indicating a large degree of variation in the chemical constituents of the three species. Analysis was performed using a HPInnowax column, 250 μm i.d., 0.25 μm film thickness.