Table 3.

Relative percentages of volatile compounds extracted by HS-SPME of EVOO at the time of packaging (t0) and of EVOO samples stored in greenish glass (GG) or tinplate tin (TT) at 6 and 26 °C for 125 days (t3) after packaging. LRI: linear retention indices. Data were reported as mean ± SD (n = 3). In each row, different letters indicate significant differences among treatments at p < 0.05.

Volatile compound	LRI	t 0	GG 6	GG 26	TT 6	TT 26
(E)-2-penten-1-ol	767	1.00 ± 014 a	1.10 ± 0.28 a	0.90 ± 0.07 a	1.00 ± 0.14 a	0.90 ± 0.28 a
hexanal	802	2.20 ± 0.35 a	2.30 ± 0.57 a	2.80 ± 0.57 a	2.10 ± 0.28 a	2.30 ± 0.57 a
(E)-2-hexenal	856	40.30 ± 0.92 ab	41.70 ± 0.85 a	40.00 ± 1.56 ab	38.70 ± 1.13 ab	36.80 ± 1.41 b
1-hexanol	869	13.40 ± 0.71 a	13.40 ± 0.42 a	12.20 ± 0.85 a	11.60 ± 0.85 a	12.40 ± 0.71 a
(Z)-2-pentenyl acetate	907	-	-	0.50 ± 0.01 a	-	0.70 ± 0.01 a
3-ethyl-1,5-octadiene*	942	1.30 ± 0.28 a	1.30 ± 0.14 a	1.30 ± 0.41 a	1.20 ± 0.28 a	1.20 ± 0.42 a
3-ethyl-1,5-octadiene*	950	1.60 ± 0.42 a	1.80 ± 0.57 a	1.90 ± 0.28 a	1.60 ± 0.42 a	2.20 ± 0.57 a
6-methyl-5-hepten-2-one	987	0.80 ± 0.14 b	-	0.50 ± 0.01 b	2.70 ± 0.57 a	3.60 ± 0.42 a
3,7-decadiene*	998	4.20 ± 0.57 a	4.00 ± 0.57 a	4.20 ± 0.78 a	3.80 ± 0.14 a	3.70 ± 0.57 a
3,7-decadiene*	999	0.40 ± 0.01 a	0.90 ± 0.14 a	0.80 ± 0.21 a	0.80 ± 0.28 a	0.60 ± 0.01 a
(Z)-3-hexenyl acetate	1008	13.70 ± 0.85 a	13.30 ± 0.85 a	12.80 ± 0.99 a	12.70 ± 0.57 a	12.70±0.85 a
1-hexyl acetate	1010	3.90 ± 0.28 a	3.50 ± 0.42 a	3.70 ± 0.57 a	3.20 ± 0.42 a	3.30 ± 0.57 a
(E)-2-hexenyl acetate	1017	0.50 ± 0.14 a	0.70 ± 0.01 a	0.70 ± 0.07 a	0.70 ± 0.01 a	0.80 ± 0.14 a
limonene	1032	-	-	0.40 ± 0.01 b	1.20 ± 0.14 a	0.30 ± 0.01 b
(E)-β-ocimene	1052	3.70 ± 0.42 a	3.60 ± 0.57 a	3.40 ± 0.71 a	3.80 ± 0.57 a	2.60 ± 0.42 a
nonanal	1104	1.30 ± 0.42 a	1.20 ± 0.28 a	1.70 ± 0.28 a	1.40 ± 0.42 a	1.60 ± 0.42 a
4,8-dimethyl-1,3,7-nonatriene*	1112	0.80 ± 0.07 a	0.90 ± 0.28 a	0.80 ± 0.41 a	0.90 ± 0.41 a	0.80 ± 0.28 a
n-dodecane	1200	-	-	-	-	0.70 ± 0.07 a
(E)-2-dodecene	1205	5.60 ± 0.71 a	5.60 ± 0.64 a	6.00 ± 0.71 a	6.40 ± 0.57 a	6.90 ± 0.57 a
α-copaene	1377	1.00 ± 0.28 a	0.90 ± 0.01 a	1.30 ± 0.42 a	1.10 ± 0.28 a	1.40 ± 0.28 a
(E,E)-α-farnesene	1508	4.20 ± 0.57 a	3.70 ± 0.42 a	4.00 ± 0.42 a	5.00 ± 0.78 a	4.30 ± 0.71 a
C6-Aldehydes	-	42.5 ± 1.27 a	44.0 ± 1.42 a	42.8 ± 2.13 a	40.8 ± 1.41 a	39.1 ± 1.98 a
C6-Alcohols	-	13.40 ± 0.71 a	13.40 ± 0.42 a	12.20 ± 0.85 a	11.60 ± 0.85 a	12.40 ± 0.71 a
C6-Esters	-	18.10 ± 1.27 a	17.50 ± 2.27 a	17.20 ± 1.63 a	16.60 ± 1.00 a	16.80 ± 1.56 a
Other oxygenated derivatives	-	3.10 ± 0.70 b	2.30 ± 0.56 b	3.60 ± 0.36 b	5.10 ± 1.13 a	6.80 ± 1.13 a
Other hydrocarbon derivatives	-	13.90 ± 2.06 a	14.50 ± 2.34 a	15.00 ± 2.80 a	14.70 ± 2.10 a	16.10 ± 2.49 a
Monoterpenes	-	3.70 ± 0.42 b	3.60 ± 0.57 b	3.80 ± 0.72 b	5.00 ± 0.71 a	2.90 ± 0.43 b
Sesquiterpenes	-	5.20 ± 0.85 ab	4.60 ± 0.43 b	5.30 ± 0.84 ab	6.10 ± 1.06 a	5.70 ± 0.99 ab
Total identified	-	99.90	99.90	99.90	99.90	99.90