Effect of Eucalyptus Oil Inhalation on Pain and Inflammatory Responses after Total Knee Replacement: A Randomized Clinical Trial

Table 1

Chemical compositions of the eucalyptus oil determined by GC-MS.

RT^a (min)	KI^b	Compound	Area %^c
12.952	1038	α-pinene	4.95
14.513	1075	α-fenchene	0.01
14.897	1084	Camphene	0.03
16.826	1128	β-pinene	0.75
17.571	1144	o-cymene	0.01
19.118	1177	b-myrcene	0.95
19.477	1184	α-phellandrene	1.09
20.221	1199	α-terpinene	0.24
21.447	1227	Limonene	13.68
21.985	1239	1,8-cineole	61.46
22.560	1251	trans-β-ocimene	0.33
23.431	1269	γ-terpinene	5.87
24.619	1293	𝜌-cymene	8.55
25.152	1304	α-terpinolen	0.41
25.308	1307	Isoamyl isovalerate	0.04
28.679	1381	o-menthone	0.05
29.771	1403	α-pinene epoxide	0.02
32.286	1461	Dehydro-𝜌-cymene	0.02
33.529	1489	cis-Limonene oxide	0.05
36.294	1554	Linalool	0.20
38.286	1600	Fenchyl alcohol	0.07
39.233	1624	4-Terpineol	0.38
41.487	1680	trans-pinocarveol	0.21
42.519	1705	cis-Citral	0.03
42.713	1710	Crypton	0.01
42.883	1715	α-terpineol	0.53
43.115	1721	α-terpinyl acetate	0.01
43.204	1723	Borneol	0.02
44.984	1770	Carvone	0.01
48.033	1852	cis-Carveol	0.02
48.139	1855	trans-Geraniol	0.004

aRT: retention time. ^bKI: Kovats indices. ^cCalculated with peak area obtained from GC/MS.