Composition and Antimicrobial Activity of Euphrasia rostkoviana Hayne Essential Oil

Table 1

Chemical composition of Euphrasia rostkoviana Hayne essential oil.

Peak number	Component	RI	Area (%)	ID	Peak number	Component	RI	Area (%)	ID
1	1-Hexanol^d	—	0.10	a	41	Damascenone	1385	0.56	a, b
2	1-Octen-3-ol	981	1.82	a, b	42	Methyl eugenol	1406	0.23	a, b
3	β-Myrcene	992	0.14	a, b, c	43	Caryophyllene	1419	1.28	a, b, c
4	3-Octanol	996	0.13	a, b	44	Geranyl acetone	1455	0.89	a, b
5	p-Cymene	1027	0.81	a, b, c	45	Trans-β-farnesene	1460	0.13	a, b
6	Limonene	1032	0.34	a, b, c	46	Alloaromadendrene	1462	0.12	a, b
7	Eucalyptol	1034	0.25	a, b, c	47	γ-Muurolene	1478	0.25	a, b
8	γ-Terpinene	1062	0.34	a, b, c	48	Germacrene D	1482	0.31	a, b
9	Sabinene hydrate	1070	0.14	a, b	49	Curcumene	1484	1.21	a, b
10	1-Octanol	1074	0.40	a, b	50	Trans-β-ionone	1487	1.53	a, b
11	3,5-Octadienone^d	1094	0.16	a, b	51	Valencene	1493	0.13	a, b
12	Linalool	1101	4.65	a, b, c	52	α-Selinene^d	1495	0.17	a, b
13	α-Thujone	1106	0.88	a, b	53	Epizonarene^d	1498	0.26	a, b
14	β-Thujone	1118	0.48	a, b	54	α-Muurolene	1500	0.18	a, b
15	Camphor	1146	1.00	a, b, c	55	β-Bisabolene	1510	0.94	a, b
16	Menthone	1156	1.98	a, b, c	56	γ-Cadinene	1515	0.40	a, b
17	2-Nonenal, (E)-	1163	0.10	a, b	57	Nerolidol^d	1566	0.10	a, b
18	Borneol	1168	2.39	a, b, c	58	Lauric acid	1574	2.79	a, b
19	(+/−)Lavandulol	1170	0.16	a, b	59	Spathulenol	1578	0.61	a, b
20	Menthol	1175	2.02	a, b, c	60	Caryophyllene oxide	1583	1.47	a, b
21	4-Terpineol	1179	1.13	a, b	61	Pseudoionone^d	1587	0.18	a, b
22	α-Terpineol	1191	2.39	a, b	62	Humulene epoxide II	1609	0.25	a, b
23	Estragole	1199	0.34	a, b, c	63	Longifolenaldehyde^d	1613	0.20	a, b
24	Decanal	1207	0.15	a, b	64	τ-Cadinol	1643	0.18	a, b
25	β-Cyclocitral^d	1222	0.21	a, b	65	β-Eudesmol	1651	0.13	a, b
26	Thymol methyl ether	1238	0.75	a, b	66	Myristic acid	1771	4.71	a, b
27	Cumin aldehyde	1242	0.23	a, b	67	Hexahydrofarnesyl acetone	1847	3.16	a, b
28	Neral	1244	0.14	a, b	68	Pentadecanoic acid	1865	0.28	a, b
29	Carvone	1246	1.28	a, b, c	69	Farnesyl acetone	1919	0.50	a, b
30	Piperitone	1256	0.18	a, b	70	Palmitic acid	1977	18.47	a, b
31	Geraniol	1258	0.79	a, b	71	Phytol^d	2114	0.12	a, b
32	Trans-2-decenal^d	1264	0.11	a, b	72	Linoleic acid	2143	1.90	a, b
33	Geranial	1273	0.15	a, b	73	Linolenic acid	2148	3.81	a, b
34	Anethole	1287	4.09	a, b	74	Tricosane	2300	1.79	a, b
35	Safrole	1289	0.21	a, b	75	Tetracosane	2400	0.16	a, b
36	Thymol	1295	7.97	a, b, c	76	Pentacosane	2500	1.36	a, b
37	Carvacrol	1304	1.96	a, b, c
38	(E,E)-2,4-Decadienal	1318	0.21	a, b		Total identified		98.91
39	Capric acid	1374	0.26	a, b
40	α-Copaene	1377	0.15	a, b

R: retention indices relative to n-alkanes on HP-5MS capillary column (30 m × 0.25 mm, 0.25 m); peak area relative to total peak area in %; ID: identification method; a: identification based on mass spectra matching; b: identification based on retention index; c: identification based on coinjection of authentic sample; d: tentative identification.