Table 2.

Main volatile organic compounds (VOCs) and their relative contents (chromatographic peak area × 10⁻⁶) in salmon filets under four different storage conditions.

VOCs	Relative concentration (Area × 10−6)
	0 d	Con (4 d)	Con (8 d)	T1 (4 d)	T1 (8 d)	T2 (4 d)	T2 (8 d)	T3 (4 d)	T3 (8 d)
Alcohols
1-Penten-3-ol	43.47	45.53	53.45	56.23	36.98	52.16	37.42	91.51	47.19
1-Pentanol	7.26	—	—	—	—	—	—	—	—
2-Penten-1-ol, (Z)-	11.24	27.07	16.94	23.13	—	35.52	8.13	38.71	15.02
1-Hexanol	1.55	2.55	8.81	3.36	8.91	4.70	10.78	13.08	3.47
1-Octen-3-ol	23.26	77.91	67.76	37.24	43.25	54.11	27.19	89.97	31.34
2-Octyn-1-ol	20.00	57.35	42.92	27.71	28.36	23.51	16.36	71.71	19.38
2-Hexadecanol	0.86	—	—	0.98	1.80	0.51	—	0.94	—
1-Heptanol	24.34	20.28	13.17	8.39	—	—	—	14.97	—
2-Ethyl-1-hexanol	—	—	13.82	7.07	12.17	—	11.20	—	4.89
3-Methyl-1-butanol	—	—	59.91	—	80.44	—	80.83	—	66.23
Phenylethyl alcohol	—	—	7.16	—	58.72	—	31.57	—	10.36
Aldehydes
Hexanal	140.02	261.46	264.38	276.77	230.33	382.05	190.76	438.40	183.94
Heptanal	70.98	48.27	57.81	34.81	58.68	62.67	27.86	89.82	25.49
Benzaldehyde	12.10	15.97	72.14	31.29	51.24	30.60	42.53	46.79	37.00
Octanal	16.24	33.46	29.57	32.15	25.65	31.79	13.63	32.58	13.25
Nonanal	73.74	95.19	68.75	115.30	70.63	113.40	35.32	110.90	31.67
2,6-Nonadienal, (E, Z)-	1.76	—	—	—	—	—	—	—	—
Decanal	5.49	6.02	4.15	8.92	5.38	9.34	5.66	4.83	2.61
Propanal	—	6.46	5.27	25.68	10.11	22.70	7.90	—	—
Benzeneacetaldehyde	—	—	26.17	—	36.48	—	28.23	—	29.56
Ketones
2,3-Pentanedione	7.52	—	6.93	—	8.30	39.53	8.32	—	8.08
2,3-Octanedione	46.68	6.17	30.58	12.11	20.70	16.01	11.20	30.45	12.78
2-Butanone	4.25	—	—	—	—	—	—	—	—
2,3-Butanedione	—	—	—	—	14.52	—	13.84	—	16.81
Esters
Acetic acid isopentyl ester	—	—	—	—	—	—	—	—	2.39

— Indicates not detected.