Triacylglycerols Composition and Volatile Compounds of Virgin Olive Oil from Chemlali Cultivar: Comparison among Different Planting Densities

Table 3

Composition of the volatile fraction obtained from Chemlali virgin olive oils extracted by HS-SPME.

	LRI	156 trees ha^−1	100 trees ha^−1	69 trees ha^−1	51 trees ha^−1
2,3-butanediol	792	—	—	—	3.3a
Hexanal	800	2.7b	3.8c	4.4c	0.9a
(E)-2-hexenal	851	7.4a	10.9b	20.3c	—
(Z)-3-hexen-1-ol	853	—	—	—	3.0a
1-hexanol	871	15.1b	32.0d	7.3a	19.3c
propyl butanoate	902	—	—	1.6	—
(E,E)-2,4-hexadienal	912	—	—	—	—
propyl 2-methylbutanoate	953	—	—	1a	—
(Z)-2-heptenal	962	—	—	—	—
1-heptanol	970	—	—	—	0.2a
Phenol	982	—	—	—	1.1a
3-octanone	987	—	—	0.4a	0.3a
(E,Z)-2,4-heptadienal	998	—	—	—	—
(Z)-3-hexenyl acetate	1007	4.5	—	—	—
1-hexyl acetate	1009	11.8b	—	—	0.3a
pentyl propanoate	1012	—	—	2.1	—
benzyl alcohol	1033	0.6a	0.3a	—	1.9
(E)-β-ocimene	1051	0.5a	4.1b	1a	4.7b
pentyl isobutyrate	1058	—	—	0.9a	—
ortho-guaiacol	1090	—	—	—	10.1a
isopentyl 2-methylbutanoate	1099	—	—	0.5a	—
isopentyl isovalerate	1103	—	—	1.6a	—
nonanal	1104	0.8a	0.6a	—	0.5a
phenyl ethyl alcohol	1112	7.7b	—	1.3a	1.3a
veratrole	1148	—	—	—	0.2a
p-vinyl anisole	1155	—	0.4a	—	—
(E)-2-nonenal	1164	—	0.6a	—	1a
Decanal	1206	37.4a	39.9a	28.6a	28.8a
2-ethylbenzaldehyde	1219	—	—	—	2.2a
Tridecane	1300	—	—	—	—
α-copaene	1377	—	—	—	—
1-tetradecene	1390	—	—	1.0a	—
Isocaryophyllene	1407		0.1a	—	—
β-caryophyllene	1418	1.3a	0.7a	—	—
dihydro-b-ionone	1435	—	—	—	—
α-humulene	1456	0.7a	—	0.1a	—
γ-muurolene	1477	—	—	—	—
valencene	1494	1.0a	1.2a	—	0.6a
pentadecane	1500	—	—	2.8a	—
(E,E)-α-farnesene	1505	2.5b	1.2a	2.3b	15.3a
Cedrol	1597	—	—	—	—
1-heptadecene	1678	—	—	15.4a	—
heptadecane	1700	—	—	1.1a	—
Total identified		94.5	97.2	92.3	95.0