Table 1. Chemical composition of ZEO.

Compounds	KI a	Area (%)	Compounds	KI	Area (%)
α-Thujene	931	0.15	linalool	1106	6.26
α-Pinene	639	3.66	Borneol	1163	0.19
Camphene	953	0.17	Terpinen-4-ol	1175	4.63
β-Pinene	980	1.55	Thymol methyl ether	1233	0.17
β-Mycrene	991	1.35	Bornyl acetate	1284	0.17
α-Phellandrene	1002	0.15	Thymol	1301	44
d-3-Carene	1009	1	Carvacrol	1318	14.4
α-Terpinene	1016	1.74	Acetylthymol	1284	0.3
Cis-para-menth-2-en-1-o	1123	0.37	d-Elemene	1340	0.24
p-Cymene	1028	11.15	Eugenol	1360	0.82
1,8-Cineole	1032	0.86	Trans-Caryophyllene	1423	2.78
γ-Terpinene	1060	0.08	Caryophyllene oxide	1583	0.93
α-Terpinolene	1087	0.08
Total					97.23%

^aKovats indices calculated against n-alkanes on HP-5 column.