Table 2. Main compounds of ZOEO by GC-MS.

Retention time (min)	Compound	Relative concentration (%)
5.64	α-thujene	0.53
5.83	α-pinene	2.52
7.16	sabinene	23.35
7.23	β-pinene	8.31
7.84	β-myrcene	0.71
8.75	bornylene	0.49
9.08	thymene	3.94
9.21	dl-limonene	0.90
9.32	eucalyptol	2.03
10.46	1,8-cineol	1.53
10.94	γ-terpentene	0.34
15.67	terpene-4-ol	15.97
16.37	α-terpineol	0.55
25.88	trans-caryophyllene	0.39
27.29	α-humulene	9.67
33.04	α-caryophyllene	0.86
33.41	humulene oxide	0.71
37.97	zerumbone	25.21