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. 2017 Feb 28;5:e2961. doi: 10.7717/peerj.2961

Figure 4. Headspace solid phase microextraction gas chromatography mass spectrometry (HS-SPME-GC-MS) analysis of enzymatic products of recombinant PmSTS and truncated recombinant PmSTS_Δ24.

Figure 4

(A) GC-MS chromatogram of sample extracted from in vitro enzymatic reaction containing PmSTS. (B) GC-MS chromatogram of sample extracted from in vitro enzymatic reaction containing PmSTS_Δ24. (C–D) GC-MS mass spectra for the compounds of 1 and 2 in (A) and (B). According to the NIST11 mass spectral library, the compound 1 and 2 were identified as β-farnesene and β-sesquiphellandrene, respectively.