Chemical Composition of Essential Oil from the Peel of Chinese Torreya grandis Fort

Table 1

Percentage composition of the oils of Chinese Torreya grandis Fort.

Pretreatment method
No.	Compound	RI^a	Standard RI^b	Mass percentage%		Method of identification
				Cold pressing	Warm drying
1	Tricyclen	1018	1014	0.2	0.2	MS^c, RI
2	𝛼-Pinene	1037	1026	20.1	24.1	MS, RI
3	Fenchene	1068	1045	0.3	0.3	MS, RI
4	Camphene	1077	1076	0.7	0.8	MS, RI
5	𝛽-Pinene	1117	1115	2.4	2.5	MS, RI
6	Sabinene	1130	1132	0.9	0.5	MS, RI
7	𝛾-Carene	1159	1148	3.9	3.8	MS, RI
8	𝛽-Myrcene	1170	1160	3.6	3.3	MS, RI
9	Limonene	1212	1218	37.1	35.6	MS, RI
10	𝛽-phellandrene	1218	1210	0.8	0.7	MS, RI
11	cis-Ocimene	1241	1223	0.2	0.1	MS, RI
12	trans-𝛽-Ocimene	1258	1235	0.2	0.1	MS, RI
13	p-cymene	1278	1261	0.3	0.4	MS, RI
14	𝛼-Terpinolene	1288	1278	0.4	0.3	MS, RI
15	Isoterpinolene	1380	1390	—	0.1	MS, RI
16	o-Allyltoluene	1442		0.1	0.1	MS
17	cis-Limonene oxide	1450		—	0.1	MS
18	𝛼-Cubebene	1462	1468	0.3	0.5	MS, RI
19	𝛿-Elemene	1474	1479	—	0.1	MS, RI
20	𝛼-Copaene	1495	1497	0.1	0.1	MS, RI
21	Methyl pulegenate	1499		0.1	—	MS
22	𝛼-Gurjunene	1535	1544	0.1	0.1	MS, RI
23	𝛽-Cubebene	1542	1543	0.5	0.3	MS, RI
24	Bornyl acetate	1582	1570	0.2	0.1	MS, RI
25	𝛽-Elemene	1592	1578	0.2	0.2	MS, RI
26	Epi-bicyclosesquiphellandrene	1595	1638	1.0	0.9	MS, RI
27	caryophyllene oxide	1601	1579	1.1	1.0	MS, RI
28	Aromadendrene	1611	1609	0.1	0.17	MS, RI
29	trans-p-Mentha-2,8-dien-1-ol	1626		0.2	0.2	MS
30	𝛾-Elemene	1641	1651	0.1	0.1	MS, RI
31	cis-Verbenol	1654	1663	0.1	—	MS, RI
32	trans-𝛽-Farnesene	1667	1662	2.8	2.7	MS, RI
33	𝛼-Humulene	1675	1662	0.6	0.8	MS, RI
34	1,8-menthadien-4-ol	1685		0.1	0.1	MS
35	𝛾-Muurolene	1692	1706	0.7	1	MS, RI
36	𝛼-Terpineol	1694	1706	0.4	0.3	MS, RI
37	𝛼-Terpinenyl acetate	1696		0.3	0.3	MS
38	Isoborneol	1698	1664	0.4	0.3	MS, RI
30	Verbenone	1709	1733	0.1	0.1	MS, RI
40	Germacrene D	1714	1721	2.9	2.5	MS, RI
41	2-Isopropyl-5-methyl-9-methylene-bicyclo[4.4.0]dec-1-ene	1719		1.0	1.1	MS
42	𝛽-Selinene	1724	1618	0.4	0.3	MS, RI
43	𝛼-amorphene	1728		1.8	1.7	MS
44	Carvone	1737	1751	0.4	—	MS, RI
45	1-Decanol	1756	1752	0.2	0.1	MS, RI
46	𝛾-Cadinene	1762	1765	4.8	4.2	MS, RI
47	𝛿-Cadinene	1764	1772	0.1	0.3	MS, RI
48	trans-Carveol	1832	1836	0.4	0.3	MS, RI
49	Germacrene B	1834	1811	0.1	0.1	MS, RI
50	Calamenene	1837	1816	1.2	1.4	MS, RI
51	p-Cymen-8-ol	1847	1834	0.3	0.3	MS, RI
52	cis-Carveol	1863	1861	0.2	0.2	MS, RI
53	𝛼-Calacorene	1920	1912	0.1	—	MS, RI
55	Palustrol	1931	1956	0.1	0.2	MS, RI
56	(Z)-3-Decen-1-ol	1983		0.1	—	MS
57	Caryophyllene oxide	1987	1947	0.2	0.2	MS, RI
58	Humulene epoxide II	2045	2002	0.1	—	MS, RI
59	Germacrene D-4-ol	2050	2057	0.1	0.1	MS, RI
60	Spathulenol	2123	2144	1.9	1.7	MS, RI
61	2-isopropyl-5-methyl-9-methylene-Bicyclo[4.4.0]dec-1-ene	2170		0.1	0.1	MSI
62	t-Muurolol	2185	2187	0.2	0.1	MS, RI
63	6-cadinol	2197		1.8	1.9	MS
64	Isospathulenol	2224	2225	0.1	0.1	MS, RI
65	𝛼-Cadinol	2231	2235	0.3	0.1	MS, RI
	total			99.6	99.4

^aRI: retention indices in elution order from HP-INNOWAX column.
^bRI Standard: these data all are published.
^cMS: mass spectroscopy.