Table 1.

Chemical composition of essential oil from Z. cassumunar Roxb. obtained by GC-MS analysis. The cassumunar ginger oil was extracted from the rhizomes of Z. cassumunar by simultaneous steam-distillation and analyzed by GC-MS. RT: Retention time; MW: Molecular weight.

Peak	RT (min)	Component	Formula	MW (g/mol)	Amount (%)
1	5.64	α-Thujene	C10H16	136.23	0.60
2	5.83	α-Pinene	C10H16	136.23	1.58
3	7.16	Sabinene	C10H16	136.23	43.54
4	7.84	Myrcene	C10H16	136.23	1.17
5	8.74	α-Terpinene	C10H16	136.23	2.82
6	9.09	Benzene	C6H6	78.11	0.94
7	10.46	γ-Terpinene	C10H16	136.23	7.38
8	11.69	α-Terpinolene	C10H16	136.23	0.84
9	15.68	Terpinen-4-ol	C10H18O	154.25	29.52
10	30.24	β-Sesquiphellandrene	C15H24	204.35	0.52
11	34.63	1,2-Dimethyl-6-nitroindolizine	C10H10O2N2	190.20	11.10