. 2021 Nov 29;4:882–890. doi: 10.1016/j.crfs.2021.11.002

Table 2.

The chemical compositions of TEOs of five different origins in China.

Number	Compounds	Formula	RT^b	RI^c	Relative Content% (mean ± SD)^a
Number	Compounds	Formula	RT^b	RI^c	Guangxi	Yunnan	Sichuan	Liancheng	Changting
1	β-Pinene	C₁₀H₁₆	8.22	976	−^d	0.45 ± 0.25^a	8.22	0.03 ± 0.01^b	0.06 ± 0.02^b
2	Eucalyptol	C₁₀H₁₈O	9.808	1032	0.05 ± 0.02^b	0.47 ± 0.23^b	0.24 ± 0.05^b	0.42 ± 0.07^b	3.25 ± 0.85^a
3	Camphor	C₁₀H₁₆O	13.245	1139	0.06 ± 0.01^b	0.64 ± 0.17^a	0.02 ± 0.01^b	–	–
4	DL-Isoborneol	C₁₀H₁₈O	13.753	1155	0.05 ± 0.01^b	0.37 ± 0.03^a	0.02 ± 0.01^b	–	–
5	2-Undecanone	C₁₁H₂₂O	17.422	1279	0.09 ± 0.02^b	0.36 ± 0.12^a	0.08 ± 0.03^b	0.03 ± 0.01^b	0.03 ± 0.01^b
6	2-Tridecanol	C₁₃H₂₈O	17.715	1289	0.01 ± 0.01^b	0.23 ± 0.13^a	–	0.02 ± 0.01^b	0.02 ± 0.01^b
7	β-Elemene	C₁₅H₂₄	20.096	1375	0.34 ± 0.05^b	1.38 ± 0.62^a	0.25 ± 0.05^b	0.54 ± 0.08^b	0.47 ± 0.09^b
8	7-epi-Sesquithujene	C₁₅H₂₄	20.413	1387	0.97 ± 0.08^ab	1.04 ± 0.28^a	0.72 ± 0.18^b	0.69 ± 0.05^b	0.69 ± 0.09^b
9	cis-α-Bergamotene	C₁₅H₂₄	21.218	1414	0.45 ± 0.02^b	1.01 ± 0.50^a	0.61 ± 0.07^ab	0.25 ± 0.02^b	0.24 ± 0.02^b
10	β-Sesquiphellandrene	C₁₅H₂₄	21.397	1419	0.50 ± 0.03^a	0.46 ± 0.15^a	0.55 ± 0.06^a	0.31 ± 0.02^b	0.27 ± 0.02^b
11	(E)-β-Farnesene	C₁₅H₂₄	21.683	1428	1.70 ± 0.15^a	1.42 ± 0.31^a	1.37 ± 0.18^a	1.68 ± 0.02^a	1.50 ± 0.19^a
12	α-Humulene	C₁₅H₂₄	21.813	1432	0.34 ± 0.03^a	0.57 ± 0.36^a	0.59 ± 0.04^a	–	–
13	ar-Curcumene	C₁₅H₂₂	22.465	1452	22.80 ± 0.98^a	14.50 ± 1.83^bc	11.40 ± 1.98^d	15.45 ± 1.91^b	12.01 ± 0.79^cd
14	β-Eudesmene	C₁₅H₂₄	22.678	1458	–	1.12 ± 0.44	–	–	–
15	α-Zingiberene	C₁₅H₂₄	22.794	1462	12.33 ± 0.59^c	14.07 ± 5.58^c	15.57 ± 0.60^bc	20.94 ± 1.96^ab	24.41 ± 3.96^a
16	β-Bisabolene	C₁₅H₂₄	23.109	1472	8.77 ± 0.24^a	8.50 ± 1.39^a	5.18 ± 0.55^c	8.35 ± 0.59^ab	7.07 ± 0.46^b
17	δ-Cadinene	C₁₅H₂₄	23.372	1480	0.32 ± 0.07^a	–	–	0.08 ± 0.03^b	0.06 ± 0.03^b
18	β-Cedrene	C₁₅H₂₄	23.537	1484	25.37 ± 0.43^a	17.04 ± 0.56^b	15.75 ± 1.23^b	25.89 ± 1.02^a	24.37 ± 1.22^a
19	cis-Sesquisabinene hydrate	C₁₅H₂₆O	24.202	1504	0.42 ± 0.01^b	0.47 ± 0.05^a	–	0.18 ± 0.01^c	0.14 ± 0.02^c
20	Humulene epoxide II	C₁₅H₂₄O	24.214	1504	–	–	0.37 ± 0.02	–	–
21	Germacrene B	C₁₅H₂₄	24.372	1508	0.14 ± 0.02^c	0.49 ± 0.03^b	0.63 ± 0.05^a	0.61 ± 0.02^a	0.50 ± 0.05^b
22	3,3,5,5-Tetramethylcyclopentene	C₉H₁₆	24.515	1511	0.08 ± 0.01^bc	0.07 ± 0.01^c	0.13 ± 0.01^a	0.09 ± 0.01^b	0.07 ± 0.01^c
23	ar-Turmerol	C₁₅H₂₂O	24.742	1517	0.48 ± 0.07^b	–	0.75 ± 0.09^a	0.14 ± 0.04^c	0.09 ± 0.03^c
24	Caryophyllene oxide	C₁₅H₂₄O	24.917	1521	0.25 ± 0.01^b	0.34 ± 0.08^a	0.22 ± 0.01^b	0.04 ± 0.01^c	0.02 ± 0.01^c
25	Cryptomeridiol	C₁₅H₂₈O₂	25.2	1527	–	0.17 ± 0.06	–	–	–
26	Epicurzerenone	C₁₅H₁₈O₂	25.295	1530	0.88 ± 0.08	2.08 ± 0.30	–	–	–
27	Zingiberenol	C₁₅H₂₆O	25.622	1537	0.92 ± 0.05^a	0.66 ± 0.27^b	0.45 ± 0.05^bc	0.39 ± 0.04^c	0.31 ± 0.12^c
28	trans-Nuciferol	C₁₅H₂₂O	25.772	1541	0.33 ± 0.04^a	–	–	0.23 ± 0.02^b	0.18 ± 0.07^b
29	α-Acorenol	C₁₅H₂₆O	26.09	1548	–	0.31 ± 0.06^a	–	0.15 ± 0.02^b	0.12 ± 0.03^b
30	β-Ylangene	C₁₅H₂₄	26.086	1548	0.30 ± 0.02	–	–	–	–
31	(E)-γ-Atlantone	C₁₅H₂₂O	26.35	1554	0.14 ± 0.02^b	–	0.58 ± 0.04^a	0.10 ± 0.03^b	0.09 ± 0.03^b
32	ar-Turmerone	C₁₅H₂₀O	26.737	1563	7.94 ± 0.57^ab	5.47 ± 1.43^c	9.90 ± 1.22^a	6.15 ± 0.56^bc	5.52 ± 1.72^c
33	Turmerone	C₁₅H₂₂O	26.853	1566	3.03 ± 0.37^c	3.12 ± 0.62^c	13.31 ± 1.70^a	5.87 ± 0.82^b	5.87 ± 0.57^b
34	(E)-α-Santalal	C₁₅H₂₂O	27.113	1572	–	0.22 ± 0.14	–	–	–
35	(E, E)-Germacra-3,7(11),9-trien-6-one	C₁₅H₂₂O	27.46	1580	0.75 ± 0.10^b	1.84 ± 0.32^a	1.39 ± 0.24^a	1.79 ± 0.10^a	1.62 ± 0.39^a
36	Curlone	C₁₅H₂₂O	27.588	1583	2.60 ± 0.26^b	1.69 ± 0.42^b	6.02 ± 0.80^a	2.64 ± 0.25^b	2.56 ± 0.81^b
37	Curdione	C₁₅H₂₄O₂	27.889	1591	0.22 ± 0.06	0.90 ± 0.25	–	–	–
38	Curcumenol	C₁₅H₂₂O₂	28.116	1596	0.05 ± 0.02^a	0.26 ± 0.12^a	–	0.05 ± 0.02^a	0.17 ± 0.27^a
39	Bisabolone	C₁₅H₂₄O	28.48	1604	0.39 ± 0.04^a	0.21 ± 0.08^a	0.24 ± 0.06^a	0.39 ± 0.02^a	0.46 ± 0.33^a
40	(E)-Atlantone	C₁₅H₂₂O	29.078	1616	0.25 ± 0.04^b	0.15 ± 0.05^c	0.41 ± 0.05^a	0.16 ± 0.02^c	0.14 ± 0.05^c
	Total identified (%)	93.34 ± 0.45	82.09 ± 1.78	86.74 ± 0.58	93.64 ± 0.62	92.28 ± 1.55
	Sesquiterpene hydrocarbons	74.33 ± 2.08	61.61 ± 2.45	52.62 ± 4.74	74.78 ± 0.87	71.57 ± 5.55
	Oxygenated sesquiterpenes	18.67 ± 1.64	17.89 ± 3.36	33.62 ± 4.19	18.28 ± 1.00	17.28 ± 4.27
	Monoterpene hydrocarbons	–	0.45 ± 0.25	–	0.03 ± 0.01	0.06 ± 0.02
	Oxygenated Monoterpenes	0.16 ± 0.04	1.48 ± 0.09	0.28 ± 0.09	0.42 ± 0.07	3.25 ± 0.85

Relative content (%) is given as means ± SDs (n = 3); The different labelled letters (a, b, c, d) in a row indicted the values are significantly different among the TEOs of different origins (P < 0.05) by Duncan's Multiple Range Test.

RT is the abbreviation for retention time.

Retention indices (RI) represents the retention index obtained using the C10–C25 n-alkane series as the reference in the Rxi-5Sil MS column.

- represents that the component was not retrieved in the corresponding sample.