Table 1: Key data from the GC-MS analyses of essential oils.

Name Molecular formula Mr Rt
(min.)
Commercial essential oil
wt.%
Prepared essential oil
wt.%
eugenol C10H12O2 164 23.982 84.77 86.29
eugenyl acetate C12H14O3 206 29.158 tr. 9.19
β-caryophyllene C15H24 204 25.805 10.41 1.21
α-humulene C15H24 204 26.942 1.96 n.d
caryophyllene epoxide C15H24O 220 31.737 2.27 2.69
humulene epoxide I C15H24O 220 32.508 0.34 0.29
humulene epoxide II C15H24O 220 33.877 0.25 0.31

n.d–not detected; tr.-traces

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