Characterization of Volatile Component Changes in Peas under Different Treatments by GC-IMS and GC-MS

Table 2

GC-MS analysis shows the relative content of main flavor compounds (relative internal standard n-octanol concentration) in different treatment methods.

#	Compounds	Volatile compounds (µg/g)
		Native	Washing	Blanching	Precooling	Freezing	Steaming	Boiling	Frying	Freeze-drying
1	Hexanal	2.49	2.29	3.56	5.88	10.02	9.31	3.79	1.82	2.89
2	2-Heptenal, (E)-	0.88	0.00	0.50	0.00	0.00	0.00	0.00	0.00	1.10
3	Benzaldehyde	2.56	2.40	3.54	3.92	7.32	5.62	3.30	14.70	5.04
4	Phenylacetaldehyde	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.50	0.00
5	Nonanal	10.24	11.02	9.74	10.83	25.48	11.54	13.11	6.45	11.06
6	Benzaldehyde, 4-ethyl-	11.69	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
7	Benzaldehyde, 3-ethyl-	0.00	0.19	0.24	0.40	0.69	0.50	0.30	0.00	0.00
8	Decanal	2.79	2.68	3.86	4.83	8.80	3.00	3.72	2.65	0.00
9	2-Decenal, (E)-	0.00	0.00	0.51	0.00	0.00	0.21	0.00	0.22	0.00
10	Heptanal	0.00	0.00	0.00	0.00	0.00	1.01	0.00	0.00	0.00
11	2,4-Nonadienal, (E, E)-	0.00	0.00	0.00	0.00	0.00	0.30	0.00	0.00	0.00
12	1-Cyclohexene-1-carboxaldehyde, 2,6,6-trimethyl-	0.30	0.21	0.21	0.38	0.66	0.26	0.33	0.00	1.05
13	2-Undecenal	0.00	0.00	0.00	0.61	0.00	0.60	0.00	0.00	0.00
14	2-Octenal, (E)-	0.00	0.00	0.00	1.95	2.68	1.72	1.45	0.00	0.00
15	2-Decenal, (E)-	0.00	0.20	0.00	0.82	1.19	0.00	0.00	0.00	0.00
16	Trans-2-undecen-1-ol	0.00	0.00	0.00	0.00	0.00	0.00	2.18	0.00	0.00
17	1-Octanol	0.00	0.00	0.00	0.00	0.00	0.00	1.76	0.00	0.00
18	1-Octen-3-ol	4.87	3.51	2.44	6.07	8.79	2.91	4.10	0.00	5.29
19	2-Octen-1-ol, (Z)-	1.94	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
20	Cedrol	0.00	0.00	0.00	0.79	0.92	0.00	0.00	0.00	0.00
21	1-Hexanol, 2-ethyl-	0.00	0.00	0.00	0.00	2.21	0.00	0.00	0.00	0.00
22	5,9-Undecadien-2-one, 6,10-dimethyl-	0.00	1.04	0.00	1.62	2.61	0.00	1.35	0.80	0.00
23	3,5-Octadien-2-one	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	5.14
24	5-Hepten-2-one, 6-methyl-	0.79	0.82	0.44	0.00	0.97	0.00	0.00	0.00	0.00
25	2-Decanone	0.23	0.00	0.20	0.32	0.00	0.28	0.19	0.00	3.16
26	3-Buten-2-one, 4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-	0.59	0.55	0.51	0.98	1.47	0.58	0.69	1.01	1.80
27	Butylated hydroxytoluene	0.79	1.25	0.79	0.83	1.77	0.49	0.59	0.00	1.41
28	Hexanoic acid, methyl ester	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.26
29	Benzoic acid, methyl ester	0.56	0.48	0.00	0.65	0.00	0.00	0.46	0.79	0.00
30	Isopropyl myristate	0.00	0.47	0.16	3.42	1.03	0.20	0.00	0.32	0.00
31	Hexadecanoic acid, methyl ester	0.13	0.18	0.05	0.13	0.00	0.09	0.21	0.07	0.00
32	Hexadecanoic acid, ethyl ester	0.00	0.05	0.00	0.00	0.05	0.00	0.05	0.00	0.00
33	Dibutyl phthalate	0.56	0.67	0.25	0.62	0.23	0.79	1.03	0.42	0.00
34	Cyclohexene, 1-methyl-4-(1-methylethylidene)-	0.12	1.55	0.98	0.71	0.00	0.00	0.00	0.00	0.00
35	D-Limonene	0.84	0.00	0.87	0.43	0.00	0.00	0.30	0.85	8.15
36	Cyclopropane, pentyl-	1.53	1.32	1.12	1.90	3.67	1.57	0.00	0.00	0.00
37	Styrene	0.00	0.00	0.00	0.00	1.52	0.00	0.00	0.00	10.96
38	(+)-4-Carene	0.95	0.13	0.00	0.00	1.06	0.45	0.58	1.69	0.00
39	Undecane	1.13	1.25	1.29	1.44	2.38	1.04	1.14	1.87	3.67
40	Dodecane	0.33	0.28	0.27	0.43	0.72	0.31	0.29	0.36	10.27
41	1,3-Butadiene, 1,1,2,3,4,4-hexachloro-	0.15	0.15	0.11	0.14	0.26	0.00	0.11	0.15	0.00
42	3-Tridecene, (E)-	0.10	0.00	0.00	0.10	0.00	0.00	0.07	0.00	0.00
43	Tridecane	0.34	0.29	0.28	0.42	0.81	0.23	0.24	0.75	2.13
44	5-Tetradecene, (E)-	1.91	1.30	0.00	2.44	4.36	0.72	0.00	4.60	1.05
45	Tetradecane	1.32	1.11	1.27	1.67	3.35	0.61	0.85	2.79	6.20
46	Pentadecane	2.96	2.98	3.13	4.01	7.11	1.23	2.49	4.49	3.01
47	Hexadecane	1.12	1.62	1.69	1.97	0.00	1.60	1.54	1.81	1.75
48	8-Heptadecene	0.75	0.67	0.72	0.80	0.00	0.00	0.61	0.74	0.00
49	Heptadecane	3.41	3.06	4.64	4.89	8.38	3.02	3.71	3.48	4.68
50	Octadecane	0.26	0.45	0.28	0.41	0.64	0.43	0.54	0.21	0.00
51	Z-5-Nonadecene	0.81	1.26	0.92	1.38	2.56	1.12	0.00	0.85	0.68
52	Eicosane	0.07	0.08	0.08	0.11	0.16	0.20	0.74	0.07	0.00
53	1-Nonadecene	0.11	0.32	0.20	0.00	0.37	0.26	0.33	0.00	0.00
54	Heneicosane	0.07	0.06	0.06	0.09	0.21	0.06	0.11	0.07	0.00
55	Furan, 2-pentyl-	2.79	2.10	3.41	4.89	7.41	4.80	2.65	4.14	6.89
56	Benzene, 1-methyl-2-(1-methylethyl)-	0.41	0.55	0.00	0.16	0.52	0.18	0.25	0.00	0.00
57	Naphthalene	0.54	0.65	0.32	0.72	1.37	0.15	0.60	0.00	0.00
58	Naphthalene, 1-methyl-	0.35	0.00	0.00	0.11	0.27	0.21	0.35	0.00	0.00
59	Naphthalene, 2-methyl-	0.00	0.35	0.18	0.32	0.65	0.00	0.00	0.00	1.87
60	Naphthalene, 2,3-dimethyl-	0.00	0.15	0.00	0.19	0.39	0.00	0.15	0.00	0.00
61	Pyrazine, 2-methoxy-3-(1-methylpropyl)-	0.47	0.47	0.35	0.00	0.88	0.29	0.41	0.30	0.00
62	Hexadecane, 2,6,10,14-tetramethyl-	0.00	0.51	0.16	0.24	0.35	0.36	0.00	0.00	0.73
63	Toluene	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	1.21
64	Oxime-, methoxy-phenyl-_	0.00	1.74	3.86	1.55	0.00	0.00	0.00	0.00	0.00
65	5-Tetradecene, (E)-	0.00	0.00	1.67	0.00	0.00	0.00	0.00	0.00	0.00
66	N, N-Dimethyl-m-phenylenediamine	0.00	0.00	0.00	0.00	0.00	0.00	0.00	3.49	0.00
67	Pyrazine, 3-ethyl-2,5-dimethyl-	0.00	0.00	0.00	0.00	0.00	0.00	0.00	11.25	0.00
68	Pyrazine, 2-ethyl-3,5-dimethyl-	0.00	0.00	0.00	0.00	0.00	0.00	0.00	2.01	0.00
69	2,3,5-Trimethyl-6-ethylpyrazine	0.00	0.00	0.00	0.00	0.00	0.00	0.00	4.08	0.00
70	Pyrazine, 2,5-dimethyl-3-(3-methylbutyl)-	0.00	0.00	0.00	0.00	0.00	0.00	0.00	2.08	0.00