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. 2021 Oct 14;10(10):2171. doi: 10.3390/plants10102171

Table 2.

Enantioselective analysis of the EOs with a 2,3-diethyl-6-tert-butyldimethylsilyl-β-cyclodextrin-based column.

Enantiomers LRI 1 Cupules Bark Leaves
Enantiomer Ratio (%) e.e. 2 (%) Enantiomer Ratio (%) e.e. 2 (%) Enantiomer Ratio (%) e.e. 2 (%)
(1S,5R)-(+)-α-pinene 935 8.8 82.4 u/t 100.0 5.8 88.3
(1S,5S)-(-)-α-pinene 943 91.2 100.0 94.2
(1R,4S)-(-)-camphene 960 100.0 100.0 u/t 100.0 100.0
(1R,5R)-(+)-β-pinene 996 23.1 53.8 u/t 100.0 14.1 71.8
(1S,5S)-(-)-β-pinene 999 76.9 100.0 85.9
(1S,5S)-(−)-sabinene 1000 u/t u/t 100.0 100.0
(R)-(-)-α-phellandrene 1032 31.8 29.4 100.0 100.0 u/t
(S)-(+)-α-phellandrene 1034 61.2 u/t u/t
(S)-(-)-limonene 1055 u/t 100.0 u/t 53.9 7.8
(R)-(+)-limonene 1061 100.0 u/t 46.1
(R)-(-)-linalool 1202 100.0 100.0 u/t 100.0 100.0
(S)-(+)-terpinen-4-ol 1273 23.1 53.8 20.9 58.2 100.0 100.0
(R)-(−)-terpinen-4-ol 1275 76.9 79.1 u/t
(S)-(−)-α-terpineol 1309 82.7 65.4 37.1 25.8 u/t
(R)-(+)-α-terpineol 1315 17.3 62.9 u/t
(1R,2S,6S,7S,8S)-(-)-α-copaene 1379 100.0 100.0 100.0 100.0 100.0 100.0

1 LRI = Calculated linear retention indices; 2 e.e = enantiomeric excess; u/t = undetected or detected as a trace.