Table 1.

Chemical constituents (%) of Mentha arvensis L. essential oil.

No	RT (min)	Formula	Mass	Compound	Percentage (%)	Terpenoid Group
1	7.4	C10H16	136	α-Pinene	0.34	hydrocarbon monoterpenes
2	9.14	C10H16	136	Sabinene	0.09	hydrocarbon monoterpenes
3	9.23	C10H16	136	β-Pinene	0.39	hydrocarbon monoterpenes
4	11.93	C10H16	136	Limonene	2.04	hydrocarbon monoterpenes
5	19.22	C10H18O	154	Menthone	2.51	oxygenated monoterpenes
6	19.73	C10H18O	154	Isomenthone	1.45	oxygenated monoterpenes
7	19.83	C10H20O	156	neo-Menthol	1.89	oxygenated monoterpenes
8	20.48	C10H20O	156	Menthol	66.04	oxygenated monoterpenes
9	20.75	C10H20O	156	Isomenthol	0.2	oxygenated monoterpenes
10	23.69	C10H16O	152	Piperitone	1.47	oxygenated monoterpenes
11	25.26	C10H22O2	204	Menthyl acetate	22.19	oxygenated monoterpenes
12	29.15	C15H24	204	Caryophyllene	0.59	hydrocarbon sesquiterpenes
13	33.32	C15H24O	220	Caryophyllene oxide	0.31	oxygenated sesquiterpenes

RT: Retention times (minutes).