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. 2019 Apr 28;2019:6782495. doi: 10.1155/2019/6782495

Table 7.

Changes in the chemical composition in solutions of lemon balm oil.

Compound IR Chemical composition of essential oil (mg/ml)
Alcohol solutions Hexane solutions
A B C D K A B C D K
Pinene <alpha-> 939 0.82 0.73 0.79 0.72 0.90 1.01 1.02 1.03 1.00 1.03
Pinene <beta-> 982 2.87 2.86 2.85 2.78 3.11 3.22 3.23 3.23 3.18 3.30
Limonene 1030 7.17a 7.60a 7.55a 6.75a 7.24a 7.33a 7.43a 7.45a 7.51a 7.36a
Ocimene <(Z)-beta-> 1037 0.64 0.56 0.58 0.59 0.28 0.32 0.32 0.33 0.32 0.33
Linalool 1099 0.67 0.58 0.55 0.67 0.61 0.63 0.64 0.66 0.64 0.65
Citronellal 1152 16.60a 16.74a 16.87a 16.77a 16.38a 16.74a 16.92a 17.44a 16.88a 16.92a
Terpinen-4-ol 1178 0.33 0.29 0.14 0.32 0.33 0.28 0.29 0.29 0.28 0.30
Terpineol <alpha-> 1190 0.40 0.36 0.32 0.40 0.36 0.33 0.34 0.35 0.34 0.32
Citronellol 1227 1.17 1.17± 1.16 1.31 1.21 1.28 1.03 1.33 1.29 1.33
Nerol 1232 11.92a 11.14a 11.65a 11.7a 10.90a 11.24a 11.34a 11.61a 11.61a 11.57a
Neral 1239 7.39a 7.53a 7.83a 7.96a 7.42a 7.85a 7.84a 7.27a 7.51a 8.16a
Geraniol 1254 5.03a 4.47a 4.29a 4.50a 4.88a 4.85a 5.03a 4.75a 4.96a 4.88a
Geranial 1269 7.08a 6.78a 6.64a 7.13a 7.12a 6.44a 6.82a 7.02a 6.59a 6.83a
Neryl acetate 1363 0.54 0.58 0.61 0.55 0.52 0.51 0.51 0.54 0.53 0.53
Copaene <alpha-> 1377 2.26 2.82 2.57 2.80 2.65 2.22 2.27 2.33 2.33 2.28
Caryophyllene <E-> 1420 8.40a 8.54a 8.09a 8.10a 8.47a 8.65a 8.77a 9.07a 8.99a 8.48a
Bergamotene <alpha-trans> 1436 1.71 1.8 1.46 2.01 1.48 1.25 1.28 1.33 1.31 1.29
Humulene <alpha-> 1455 2.08 2.04 1.82 1.93 1.85 1.51 1.54 1.60 1.58 1.54
Germacrene D 1487 1.14 1.18 1.18 1.19 1.18 0.91 0.91 0.93 0.95 0.90
Cadinene <gamma-> 1515 0.56 0.58 0.46 0.60 0.45 0.34 0.35 0.37 0.38 0.35
Cadinene <delta-> 1525 1.17 1.11 0.97 1.18 1.04 0.85 0.86 0.90 0.89 0.86
Caryophyllene oxide 1585 0.92 0.99 0.77 1.15 0.78 0.58 0.60 0.59 0.59 0.56

Designation according to Table 1. IR: retention indices (from temperature programming, using the definition of Van den Dool and Kratz [17]). Values designated with the same superscript letters for the dominant compound do not significantly differ at 5% error (Duncan's test).