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

Table 1

Peak area of volatile compounds of peas under 9 different treating methods via GC-IMS.

#	Compounds	RI	Peak area of peas samples
			Native	Washing	Blanching	Precooling	Freezing	Steaming	Boiling	Frying	Freeze-drying
1	Nonanal	1,105.70	138.88	266.07	282.77	166.19	365.70	270.85	232.14	134.79	326.36
2	2-Pentyl furan	990.10	39.68	81.52	51.65	138.67	67.77	258.78	64.65	109.55	75.28
3	Oct-1-en-3-ol	979.20	268.55	256.48	275.21	115.70	343.91	195.68	280.51	112.33	113.56
4	(E)-Hept-2-ena	952.20	325.91	373.45	379.64	191.86	595.89	433.44	419.22	83.27	236.77
5	Heptanal	901.00	63.62	118.21	129.66	75.75	124.08	185.53	122.11	55.83	154.90
6	2-Heptanone	888.70	59.15	62.89	58.28	102.50	101.47	104.08	59.28	86.25	240.79
7	2-Hexen-1-ol	846.30	133.17	170.85	171.22	152.22	114.79	198.27	162.94	111.60	138.78
8	Hexanal	791.00	776.29	1,865.98	1,543.11	766.14	1,609.41	1,998.21	1,086.15	102.28	1,606.15
9	3-Methylbutanal	646.50	74.91	49.64	69.86	53.29	71.96	211.90	56.56	1,122.64	76.64
10	Ethyl acetate	596.80	2,453.45	1,940.43	1,458.70	1,987.80	1,505.24	513.29	544.36	286.92	1,244.53
11	2-Butanone	580.70	200.59	197.36	221.28	144.38	253.36	634.48	353.05	709.21	210.71
12	Pentanal	702.40	202.48	293.61	301.72	258.45	292.28	381.63	453.27	141.08	193.06
13	Ethyl acetate	593.20	234.58	245.26	282.71	283.16	220.38	242.83	316.60	194.70	295.74
14	2-Propanol	509.10	168.20	203.12	203.77	172.30	190.57	197.48	188.70	129.27	218.66
15	3-Methylbutanal	650.90	57.12	78.96	54.55	43.86	69.53	104.24	66.90	148.71	77.77
16	3-Hydroxybutan-2-one	713.00	195.55	244.47	214.37	600.81	285.87	417.69	159.98	1,056.22	427.12
17	3-Methyl-2-butanol	706.60	71.72	91.17	74.90	115.29	72.51	120.27	54.08	162.34	92.06
18	Benzaldehyde	955.70	99.91	86.05	105.01	58.54	138.19	217.78	159.75	179.99	350.48
19	2-Furanmethanol	890.10	40.80	39.76	25.59	56.02	48.31	30.47	18.11	144.92	66.74
20	(E)-2-Octenal	1,055.60	48.08	98.24	54.07	55.60	79.54	64.71	46.42	38.22	27.68
21	Octanal	1,002.80	54.81	116.58	177.67	46.11	273.07	232.16	206.30	35.10	72.89
22	Dihydro-2 (3h)-furanone	917.50	79.64	79.55	81.07	81.32	101.87	71.77	65.06	295.89	67.34
23	Methylpyrazine	825.80	163.55	150.52	132.56	120.79	171.20	130.85	99.75	364.10	59.02
24	Hexanal	796.60	407.05	423.47	513.14	438.73	418.16	587.98	634.73	204.18	564.68
25	Butyl acetate	801.20	60.38	81.70	63.45	96.45	180.26	39.90	29.10	11.73	19.45
26	Pentan-1-ol	756.40	129.00	134.03	155.48	112.72	97.53	168.28	163.54	26.46	87.33
27	2-Ethyl-3,5-dimethylpyrazine	1,067.20	102.51	111.48	127.07	157.66	109.76	122.38	105.79	157.41	118.07
28	Propanoic acid	706.90	48.16	61.95	49.81	28.46	67.93	40.03	79.90	56.22	142.46
29	Methyl-5-hepten-2-one	989.70	250.18	195.28	216.69	100.66	494.13	264.84	264.98	65.45	85.87
30	Isoamyl acetate	876.30	66.38	48.84	60.77	112.02	156.57	78.49	70.90	51.21	42.18
31	Butyl propanoate	904.80	33.98	31.07	26.64	35.29	70.84	27.69	16.76	19.48	19.91
32	Styrene	896.20	32.96	68.13	53.18	35.22	76.69	44.87	24.58	21.43	42.32