Table 2.

Oxygenated 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
Oxygenated aliphatic monoterpenes
citral (mix of isomers)	0	0	0.23	±0.009	0.70	±0.017	1.06	±0.028	2.63	±0.034	0	0
trans-citral	7.14	±0.067	15.52	±0.042	0	0	0	0	0.16	±0.015	0.36	±0.031
cis-citral	4.30	±0.140	19.41	±0.021	0	0	0.30	±0.060	1.54	±0.011	0	0
citronellal	0.20	±0.024	0	0	0	0	0.70	±0.050	0.29	±0.070	0	0
geranyl acetate	0.91	±0.012	0.59	±0.020	0	0	0	0	0	0	0	0
cis-geraniol	0	0	4.96	±0.033	0	0	0	0	0	0	0	0
trans-geraniol	0	0	3.39	±0.036	1.58	±0.017	0	0	0	0	0	0
Linalool	0.29	±0.063	0	0	0.63	±0.058	1.73	±0.059	1.51	±0.057	0	0
linalyl propanoate	0	0	0.25	±0.037	0	0	0.24	±0.039	0	0	0	0
bergamol	0	0	0	0	0	0	0	0	0	0	9.53	±0.071
neryl acetate	0.49	±0.061	0.42	±0.052	0	0	0.16	±0.047	1.14	±0.092	0.21	±0.081
Oxygenated monocyclic monoterpenes
trans-carveol	0	0	0	0	3.36	±0.052	0	0	0	0	0	0
carvone	0	0	0	0	7.28	±0.032	0.10	±0.003	0	0	0	0
trans-p-2,8-mentadien-1-ol	0	0	0	0	1.84	±0.046	0	0	0	0	0	0
menthol	0,12	±0,006	0	0	0	0	0	0	0	0	0	0
menthone	0,06	±0,029	0	0	0	0	0	0	0	0	0	0
1-terpinen-4-ol	0	0	0	0	5.57	±0.075	0	0	0.42	±0.013	0	0
Oxygenated bi- and tricyclic monoterpenes
pinene oxide	0.17	±0.016	0	0	0	0	0.65	±0.050	0	0	0	0
pinocarveol	0	0	0	0	5.44	±0.035	0	0	0	0	0	0
verbenol	0.08	±0.013	0	0	4.90	±0.024	0	0	0	0	0	0
trans-verbenol	0	0	0	0	1.50	±0.038	0	0	0	0	0	0
Oxygenated monoterpenes	13.76		44.76		32.80		4.93		7.67		10.09

SD standard deviation