Peak No.a RI b Compounds Formula % Area c A B C Hydrocarbons 1 1031 α-Pinene C10H16 0.12 0.09 0.08 2 1078 Camphene C10H16 0.11 0.08 0.11 3 1121 β-Pinene C10H16 0.08 0.03 0.06 4 1166 β-Myrcene C10H16 0.47 0.35 0.04 5 1213 Limonene C10H16 0.54 0.22 0.18 7 1237 trans-β-Ocimene C10H16 3.31 1.98 NA 8 1254 cis-β-Ocimene C10H16 3.67 2.20 0.49 9 1284 Terpinolene C10H16 0.22 0.12 NA 18 1624 Caryophyllene C15H24 5.83 4.88 0.28 20 1673 trans-β-Famesene C15H24 2.95 2.62 0.52 24 1730 Germacrene D C15H24 0.75 0.64 0.87 26 1779 γ-Muurolene C15H24 0.76 0.93 0.96 31 2238 2-Isopropyl-5-methyl-9-methylenebicyclo[4.4.0]dec-1-ene C15H24 0.24 0.39 0.44 Oxides 14 1476 Linalool oxide C10H18O2 0.18 0.31 1.73 29 1991 Caryophyllene oxide C15H24O 0.51 0.84 3.78 Alcohols 6 1219 Eucalyptol C10H18O 1.86 1.30 1.52 10 1345 1-Hexanol C6H14O 0.18 0.11 0.13 13 1440 1-Octen-3-ol C8H16O 0.35 0.26 0.05 15 1538 β-Linalool C10H18O 24.89 26.83 24.80 17 1608 4-Terpeneol C10H18O 8.59 7.22 6.39 19 1668 Lavandulol C10H18O 0.99 0.94 1.01 21 1699 α-Terpineol C10H18O 1.75 1.71 1.06 22 1708 Borneol C10H18O 1.95 1.40 1.60 27 1839 trans-Geraniol C10H18O 0.70 0.88 NA 28 1927 2,6-Dimethyl-3,7-octadiene-2,6-diol C8H14O2 0.06 0.18 1.22 30 2149 p-Cymen-7-ol C10H14O 0.04 0.10 0.07 32 2281 α-Bisabolol C15H26O 0.23 0.26 0.28 34 1801 7-Norbornanol C7H12O NA NA 4.61 35 1830 Thymol C10H14O NA NA 0.41 Ketones 33 1256 3-Octanone C8H16O NA NA 0.50 Esters 11 1359 Octen-1-ol, acetate C10H18O2 1.23 0.88 1.16 12 1418 n-Hexyl butyrate C10H20O2 0.46 0.36 0.53 16 1563 Linalyl acetate C12H20O2 33.81 39.08 36.34 23 1726 cis-Geranyl acetate C12H20O2 0.92 0.88 1.69 25 1756 trans-Geranyl acetate C12H20O2 1.65 1.63 1.88 36 1939 cis-3-Hexenyl butyrate C10H18O2 NA NA 1.71 Unknowns 0.59 0.28 3.47

a Peak number labeled on TIC b Retention index relative to C8-C20 n-alkanes on Rtx®-Wax column cA: control sample; B: 2hr sunlight treated sample; C:  H2O added and sunlight treated 2hr sample

Table 4: Chemical compositional changes and relative intensity (%) of lavender EO in photosensitive experiment analysis by GC-MS.