Table 4. Chemical constituents of Litsea angulata leaf essential oil fractions by spinning band distillation (SB)

Chemical components Group Percentage (%) Retention indices (RI)
SB5 SB6 SB7 SB5 SB6 SB7 Ref1)
β-Pinene MH 4.36 ± 0.98 0.38 ± 0.02 - 955 954 - 952
β-Myrcene MH 0.66 ± 0.13 - - 964 - - 962
α-Phellandrene MH 29.28 ± 3.38 21.44 ± 2.26 2.73 ± 0.18 1,005 1,006 1,002 1,001
δ-3-Carene MH 0.82 ± 0.18 - - 1,010 - - 1,010
α-Terpinene MH 1.21 ± 0.25 1.40 ± 0.25 - 1,014 1,015 - 1,014
p-Cymene MH 7.53 ± 1.29 7.87 ± 0.89 1.94 ± 0.06 1,022 1,024 1,021 1,022
(-)-Limonene MH - 3.43 ± 0.25 - - 1,028 - 1,027
trans-β-Ocimene MH - 0.43 ± 0.11 - - 1,040 - 1,047
γ-Terpinene MH - 0.90 ± 0.13 - - 1,055 - 1,058
α-Terpinolene MH - 2.74 ± 0.35 1.13 ± 0.06 - 1,086 1,085 1,063
3-Octen-2-one. 7-methyl- O - 0.39 ± 0.06 - - 1,096 - -
trans-caran. 4.5-epoxi- MO - 1.04 ± 1.07 - - 1,131 - -
p-menth-2-en-1-ol MO - - 0.63 ± 0.02 - - 1,138 1,137
1.3-Dimethyl-1-cyclohexene O - - 1.35 ± 0.04 - - 1,171
Carvenone MO - 0.61 ± 0.00 - - 1,171 -
4-Terpineol MO - - 1.02 ± 0.01 - - 1,177 1,177
trans-2.3-Epoxicaran MO - 0.71 ± 0.03 - - 1,178 -
trans-p-Mentha-1(7).8-dien-2-ol MO 0.52 ± 0.01 - - 1,183 - 1,185
p-Cymen-8-ol MO - 0.97 ± 0.06 1.65 ± 0.04 - 1,183 1,182 1,183
α-Terpineol MO - - 0.86 ± 0.04 - - 1,189 1,187
Decanal MO - - 1.02 ± 0.00 - - 1,194 1,208
A-Phellandrene Epoxide MO 2.03 ± 0.22 1.95 ± 0.25 4.83 ± 0.07 1,200 1,200 1,200 -
1.8-Cineole MO 1.35 ± 0.23 1.17 ± 0.23 - 1,200 1,200 - -
cis-Sabinol MO - - 1.22 ± 0.03 - - 1,200 1,170
Limonene dioxide 4 MO 6.47 ± 0.71 7.50 ± 1.38 - 1,200 1,200 - -
Carvotanacetone MO - - 1.57 ± 0.04 - - 1,200 1,230
Piperitone MO - - 0.49 ± 0.00 - - 1,200 1,227
Ascaridole MO 0.74 ± 0.26 - - 1,200 - - 1,237
Thujyl alcohol isomer MO - 0.52 ± 0.30 -- - 1,200 - -
Bicyclo[3.3.1]hept-3-en. 4.6.6-trimethyl-2-vinyloxy- MO 0.53 ± 0.01 - - 1,245 - - -
1-ethoxymethyl-4-methylene-cyclohexane MO - - 0.83 ± 0.05 - - 1,204 -
Phenol. 3-methyl-5-(1-methylethyl)-.methylcarbamate O - - 1.18 ± 0.01 - - 1,251 -
cis-Limonene oxide MO - 1.29 ± 0.47 - - 1,235 -
Thujyl alcohol MO - - 0.39 ± 0.01 - - 1,301 -
Acetic acid 1.3.3-trimethyl-2-oxa-bicyclo[2.2.2]oct-6-yl ester O - 0.90 ± 0.11 1.21 ± 0.08 - 1,278 1,309 1,341
1.3.3-trimethyl-2-oxabicyclo [2.2.2]octan-6-ol MO 7.65 ± 0.54 - 3.55 ± 0.53 1,320 - 1,318 -
Ascaridole MO 5.04 ± 0.20 8.64 ± 3.92 - 1,328 1,330 - 1,237
α-Copaene SH - - 26.13 ± 0.31 - - 1,382 1,379
(-)-β-Elemene SH - - 0.77 ± 0.04 - - 1,391 1,391
Limonene dioxide 1 MO - - 2.06 ± 0.00 - - 1,478 -
cis-Piperitone oxide MO 4.72 ± 0.17 4.63 ± 0.02 - 1,657 1,537 - -
trans-Caryophyllene SH - - 0.98 ± 0.05 - 1,598 -
trans-6-hydroxy-p-menth-1-en-3-one MO 1.84 ± 0.07 - - 1,700 - - -
α-Bergamotene SH - - 1.59 ± 0.01 - - 1,627 -
α-Guaiene SH - - 0.63 ± 0.01 - - 1,683 -
α-Humulene SH - - 1.65 ± 0.11 - - 1,753 -
Alloaromadendrene SH - - 1.04 ± 0.01 - - 1,703 -
α-Amorphene SH - - 2.53 ± 0.02 - - 1,648 -
2-isopropenyl-4a.8-dimethyl-1.2.3.4.4a.5.6.7-octahydro-naphthalene SH - - 0.79 ± 0.04 - - 1,572 -
β-Selinene SH - - 3.97 ± 0.06 - - 1,533 1,527
β-Bisabolene SH - - 12.47 ± 0.23 - - 1,502 1,502
Diepi-.alpha.-cedren I SH - - 1.03 ± 0.06 - - 1,513 -
γ-Muurolene SH - - 1.49 ± 0.03 - - 1,520 1,515
δ-Cadinene SH - - 9.79 ± 0.09 - - 1,527 1,527
Naphthalene. 1.2.3.4.4a.7-hexahydro-1.6-dimethyl-4-(1-methylethyl)- SH - - 0.80 ± 0.04 - - 1,538 1,539
α-Muurolene SH - - 0.44 ± 0.01 - - 1,543 1,540
Patchouli alcohol SO 1.58 ± 0.01 1.04 ± 0.06 - 1,768 1,768 -
trans-Pinocarveylacetate O - - 1.68 ± 0.10 - - 1,720 -
Solanone O 0.99 ± 0.92 - - 1,652 - - -
Limonene dioxide 3 MO 1.12 ± 0.38 - - 1,614 - - -
cis-Limonene oxide MO 1.66 ± 0.49 1.69 ± 0.54 - 1,644 1,645 - -
MH 43.84 38.58 5.80
MO 33.65 30.70 20.09
O 0.99 1.28 5.42
SH 0.00 0.00 66.56
SO 1.58 1.04 0.00
Data from NIST (2019).
MH: monoterpene hydrocarbons, O: others, MO: oxyterpene oxygenation, SH: sesquiterpene hydrocarbons, SO: oxygenated sesquiterpenes.