Table 1.

Monoterpenes in lemon essential oils

	ETJA		Vera-Nord		Avicenna-Oil		Dufti by Gies		Croce Azzurra		Aromatic Art
	Area (%)	SD	Area (%)	SD	Area (%)	SD	Area (%)	SD	Area (%)	SD	Area (%)	SD
Aliphatic monoterpenes
ß-myrcene	4.11	±0.063	1.46	±0.046	0	0	6.94	±0.093	5.42	±0.026	0.37	±0.017
trans-ocimene	0.13	±0.025	0.49	±0.049	0	0	0	0	0	0	0	0
Monocyclic monoterpenes
ß-felandrene	0	0	0	0	0	0	0.40	±0.013	15.03	±0.092	0	0
limonene	48.27	±0.048	23.39	±0.054	42.03	±0.124	63.20	±0.007	38.50	±0.074	22.42	±0.017
α-terpinene	0.40	±0.121	0.12	±0.016	0	0	0	0	0.14	±0.032	0	0
γ-terpinene	4.85	±0.057	5.87	±0.015	0	0	4.78	±0.087	0.16	±0.013	0	0
terpinolene	1.19	±0.027	0.30	±0.038	0	0	0.34	±0.046	0.04	±0.004	0	0
Bi- and tricyclic monoterpenes
bornylene	0	0	0	0	0.49	±0.048	0	0	0	0	0	0
camphene	0.35	±0.038	0	0	0.17	±0.014	0	0	0	0	0	0
3-carene	0	0	0	0	0	0	0.16	±0.027	0	0	0	0
α-pinene	11.06	±0.135	1.44	±0.012	3.42	±0.026	3.61	±0.110	5.56	±0.082	0.16	±0.024
ß-pinene	15.14	±0.038	8.93	±0.035	15.15	±0.057	14.31	±0.163	19.98	±0.097	2.21	±0.068
3-thujene	0	0	0.30	±0.036	0.22	±0.013	0.33	±0.037	1.25	±0.067	0	0
sabinene	0	0	0.65	±0.093	0	0	0	0	0	0	0.10	±0.026
tricyclene	0.21	±0.037	0	0	0	0	0	0	0	0	0	0
Monoterpenes	85.70		42.96		61.49		94.07		86.07		25.27

SD standard deviation