. 2021 Jan 18;11:1668. doi: 10.1038/s41598-021-81047-4

Table 2.

Volatile compounds Atlantic salmon stored at 75 MPa/25 °C and AP/5 °C during 30 days, and at AP/25 °C during 5 days.

Volatile compounds	RT (min)	KI	Fresh fish	75 MPa/25 °C			AP/5 °C			AP/25 °C
Volatile compounds	RT (min)	KI	0 days	6 days	15 days	30 days	5 days	15 days	30 days	5 days
Alcohols
Pent-1-en-3-ol	2.921	670	0.073 ± 0.006	0.081 ± 0.009	0.086 ± 0.047	0.031 ± 0.006	0.074 ± 0.027	0.060 ± 0.016	0.068 ± 0.005	nd
3-Methylbutan-1-ol	3.847	717	nd	nd	nd	nd	0.038 ± 0.011^d	0.969 ± 0.066^a	0.497 ± 0.022^b	0.157 ± 0.074^c
2-Methylbutan-1-ol	3.954	720	nd	nd	nd	nd	0.009 ± 0.006^c	0.202 ± 0.030^a	0.255 ± 0.058^a	0.084 ± 0.027^b
Butane-2,3-diol	5.913	779	nd	nd	nd	nd	0.065 ± 0.032^b	0.145 ± 0.009^a	0.090 ± 0.037^ab	0.108 ± 0.044^ab
Oct-1-en-3-ol	12.930	973	0.064 ± 0.063	0.078 ± 0.016	0.076 ± 0.038	0.039 ± 0.003	0.052 ± 0.019	0.057 ± 0.021	0.055 ± 0.004	nd
Phenylethyl alcohol	19.375	1108	nd	nd	nd	nd	0.014 ± 0.003^c	0.228 ± 0.008^a	0.136 ± 0.035^b	0.222 ± 0.028^a
Aldehydes
3-Methylbutanal	2.569	642	nd	nd	nd	0.022 ± 0.007^b	0.021 ± 0.007^b	0.095 ± 0.042^a	0.072 ± 0.018^a	nd
Hexanal	5.533	768	0.362 ± 0.123^a	0.234 ± 0.043^abc	0.164 ± 0.081^bc	0.100 ± 0.034^c	0.340 ± 0.075^ab	0.248 ± 0.024^abc	0.404 ± 0.062^a	0.113 ± 0.002^c
Hept-4-enal	9.305	893	0.059 ± 0.010^a	0.046 ± 0.011^ab	0.026 ± 0.007^bc	0.012 ± 0.005^c	0.044 ± 0.003^ab	0.038 ± 0.004^b	0.042 ± 0.010^ab	nd
Heptanal	9.428	898	0.067 ± 0.035^a	0.025 ± 0.008^ab	0.034 ± 0.025^ab	0.011 ± 0.006^b	0.037 ± 0.008^ab	0.051 ± 0.012^ab	0.049 ± 0.013^ab	nd
Benzaldehyde	11.778	951	0.060 ± 0.036^b	0.052 ± 0.019^b	0.060 ± 0.026^ab	0.045 ± 0.002^b	0.042 ± 0.026^b	0.104 ± 0.034^ab	0.133 ± 0.018^a	0.076 ± 0.029^ab
Octanal	14.104	1004	0.023 ± 0.006^b	0.070 ± 0.019^a	0.059 ± 0.025^ab	0.023 ± 0.008^b	0.046 ± 0.016^ab	0.046 ± 0.017^ab	0.078 ± 0.011^a	nd
Hepta-2,4-dienal	14.420	1005	0.087 ± 0.021	0.062 ± 0.034	0.100 ± 0.072	nd	0.105 ± 0.012	0.098 ± 0.027	0.060 ± 0.022	nd
Phenylacetaldehyde	15.747	1032	nd	nd	nd	nd	0.024 ± 0.014^c	1.363 ± 0.306^a	0.483 ± 0.073^b	0.310 ± 0.161^bc
Nonanal	19.044	1101	0.029 ± 0.009	0.062 ± 0.014	0.087 ± 0.057	0.056 ± 0.014	0.064 ± 0.019	0.078 ± 0.025	0.065 ± 0.016	0.087 ± 0.012
Decanal	23.852	1200	0.019 ± 0.020	0.022 ± 0.008	0.022 ± 0.018	0.012 ± 0.007	0.019 ± 0.008	0.022 ± 0.007	0.011 ± 0.002	0.024 ± 0.012
Alkanes
Decane	13.961	1000	0.096 ± 0.026^b	0.276 ± 0.090^a	0.103 ± 0.047^b	0.087 ± 0.038^b	0.205 ± 0.030^ab	0.157 ± 0.054^ab	0.104 ± 0.017^b	nd
Undecane	18.644	1093	0.120 ± 0.025	0.450 ± 0.156	0.246 ± 0.159	0.207 ± 0.060	0.291 ± 0.062	0.204 ± 0.059	0.136 ± 0.014	0.356 ± 0.245
Dodecane	23.313	1190	0.076 ± 0.013	0.293 ± 0.116	0.196 ± 0.116	0.199 ± 0.043	0.159 ± 0.038	0.111 ± 0.020	0.075 ± 0.009	0.239 ± 0.156
Tridecane	27.240	1290	0.039 ± 0.008	0.133 ± 0.057	0.088 ± 0.053	0.099 ± 0.020	0.066 ± 0.017	0.041 ± 0.001	0.028 ± 0.001	0.113 ± 0.076
Pentadecane	33.403	1496	0.097 ± 0.034^c	0.060 ± 0.025^c	0.069 ± 0.032^c	0.055 ± 0.025^c	0.101 ± 0.047^c	0.134 ± 0.055^bc	0.421 ± 0.079^a	0.249 ± 0.114^b
Heptadecane	37.830	1680	0.107 ± 0.065^bcd	0.059 ± 0.033^d	0.075 ± 0.056^cd	0.051 ± 0.028^d	0.083 ± 0.044^bcd	0.080 ± 0.012^bc	0.088 ± 0.015^b	0.148 ± 0.025^a
2,6,10,14-Tetramethylpentadecane	38.335	1700	0.164 ± 0.037^b	0.093 ± 0.003^b	0.111 ± 0.050^b	0.085 ± 0.006^b	0.135 ± 0.043^b	0.180 ± 0.032^b	0.080 ± 0.009^b	0.352 ± 0.062^a
Esters
Ethyl acetate	2.256	616	0.025 ± 0.001^bc	nd	nd	nd	0.127 ± 0.016^bc	0.324 ± 0.113^ab	0.325 ± 0.113^ab	0.554 ± 0.279^a
Ethyl 2-methylpropanoate	4.458	735	nd	nd	nd	nd	nd	nd	nd	0.560 ± 0.126
Ethyl 2-methylbutanoate	7.356	826	nd	nd	nd	nd	nd	nd	nd	0.866 ± 0.302
Ethyl 4-methylpentanoate	12.412	962	nd	nd	nd	nd	nd	nd	nd	2.815 ± 0.591
Ketones
Butan-2-one	2.141	607	nd	nd	nd	nd	0.021 ± 0.006^b	0.019 ± 0.009^b	0.021 ± 0.008^b	1.312 ± 0.663^a
Sulphur compounds
Dimethyl disulphide	4.098	724	nd	nd	nd	nd	nd	nd	nd	0.164 ± 0.023

Different letters along each row denote significant differences (p < 0.05); absence of letters indicates not statistically significant differences. Values correspond to the peak area of each compound/peak area of internal standard ratio.

KI experiment value of Kovats Index (KI).