Comparison of Volatile Components between Raw and Vinegar Baked Radix Bupleuri by GC-MS Based Metabolic Fingerprinting Approach

Table 1

Volatile compounds and the relative contents in raw and processed Radix Bupleuri ().

No.	/min	Compound	Formula	Relative content/%
				RB	S-VBRB	R-VBRB
1	6.22	Pentanal	C5H10O	0.41 ± 0.06	0.11 ± 0.02	—
2	6.98	n-Hexanal	C6H12O	0.55 ± 0.05	0.18 ± 0.06	0.26 ± 0.04
3	7.44	-Pinene	C10H16	0.34 ± 0.07	—	—
4	7.69	Furfural	C5H4O2	2.83 ± 0.38	6.46 ± 1.36	9.12 ± 1.06
5	8.18	2-Amyl furan	C9H14O	3.31 ± 0.17	0.33 ± 0.02	0.40 ± 0.02
6	8.50	Dodecanal		0.46 ± 0.12	0.18 ± 0.01	0.18 ± 0.06
7	8.69	1-Methyl-2-isopropyl benzene	C10H14	0.81 ± 0.12	0.46 ± 0.06	0.52 ± 0.06
8	9.03	1-Methyl-4-(1-methylethyl)-cyclohexadiene	C10H16	0.21 ± 0.02	—	—
9	9.26	1-Methyl-4-isopropyl benzene	C10H14	0.71 ± 0.13	0.36 ± 0.05	0.53 ± 0.05
10	9.48	1-Methyl-4-(1-methylethylidene)-cyclohexene	C10H16	0.89 ± 0.08	0.34 ± 0.03	0.59 ± 0.11
11	10.01	Benzaldehyde	C7H6O	0.42 ± 0.04	0.55 ± 0.03	0.44 ± 0.08
12	10.14	1,2-Cyclooctene oxide	C8H14O	0.80 ± 0.16	—	—
13	10.51	n-Nonaldehyde	C9H18O	0.65 ± 0.09	—	—
14	10.67	(E)-2-Octenal	C8H14O	0.55 ± 0.12	0.43 ± 0.07	0.54 ± 0.13
15	11.31	(E)-2,4-Nonadienal	C9H14O	1.73 ± 0.07	1.58 ± 0.11	1.85 ± 0.22
16	11.64	7-Methyl-1-nonyl acetylene	C10H18	0.69 ± 0.04	0.68 ± 0.07	0.43 ± 0.02
17	12.36	(E)-9-Tetradecen-1-ol	C14H28O	2.69 ± 0.40	2.15 ± 0.20	2.37 ± 0.60
18	12.61	Verbenol	C10H16O	0.79 ± 0.04	—	—
19	12.83	4-Ethyl-benzenemethanol	C9H12O	0.83 ± 0.03	0.30 ± 0.05	0.51 ± 0.03
20	13.70	(E,E)-2,4-Sebacic olefin aldehyde	C10H16O	2.09 ± 0.15	1.22 ± 0.16	1.34 ± 0.21
21	14.89	Guaiacol	C7H8O2	1.31 ± 0.09	0.74 ± 0.07	0.37 ± 0.05
22	15.73	2-(1,1-Dimethylethyl)-phenol	C10H14O	0.79 ± 0.05	0.56 ± 0.05	0.50 ± 0.10
23	15.90	1-(1-Cyclohexen-1-yl)-ethanone	C8H12O	1.00 ± 0.09	0.52 ± 0.06	0.51 ± 0.04
24	16.41	1-Isopropyl-2-methoxy-4-toluene	C11H16O	3.19 ± 0.31	0.74 ± 0.06	0.52 ± 0.11
25	16.63	2,4-Dimethoxytoluene	C9H12O2	—	0.67 ± 0.13	0.91 ± 0.23
26	16.78	2-Decenal	C10H12O2	0.4 ± 0.08	—	—
27	17.07	2-Nonyl acetylene	C9H16	—	0.68 ± 0.09	0.62 ± 0.10
28	17.73	(Z)-2-Decenal	C10H18O	1.07 ± 0.15	0.96 ± 0.05	0.82 ± 0.19
29	18.26	p-Ethyl guaiacol	C9H12O2	1.73 ± 0.11	0.95 ± 0.21	0.82 ± 0.10
30	19.09	Capraldehyde	C10H20O	2.24 ± 0.13	1.41 ± 0.29	1.46 ± 0.21
31	19.87	(Z)-9-Hexadecen-1-ol	C16H32O	1.16 ± 0.09	1.37 ± 0.28	1.39 ± 0.14
32	20.04	4-Dimethyl-3-cyclohexene-1-acetaldehyde	C10H16O	6.02 ± 0.77	2.01 ± 0.38	2.46 ± 0.36
33	20.93	Eucalyptol	C10H18O	0.60 ± 0.02	0.72 ± 0.06	0.66 ± 0.10
34	21.12	Menthol	C10H20O	0.50 ± 0.04	0.32 ± 0.06	0.43 ± 0.06
35	21.73	6-Heptyltetrahydro-2H-pyran-2-one	C12H22O2	0.48 ± 0.07	0.68 ± 0.06	0.89 ± 0.08
36	21.92	2-Methoxy-4-propyl-phenol	C10H14O2	0.86 ± 0.14	0.43 ± 0.05	0.28 ± 0.05
37	23.08	-Cubebene	C15H24	—	0.97 ± 0.19	1.13 ± 0.10
38	23.42	Methychavicol	C10H12O	1.31 ± 0.18	1.49 ± 0.08	1.02 ± 0.08
39	23.81	Thymol	C10H14O	8.05 ± 0.44	8.63 ± 0.42	8.37 ± 0.18
40	24.23	(6E)-6-Tridecen-4-yne	C13H22	1.36 ± 0.16	1.22 ± 0.13	1.27 ± 0.17
41	24.45	6-Tert-butyl-2,4-dimethylphenol	C12H18O	4.12 ± 0.49	4.86 ± 0.23	4.54 ± 0.21
42	24.89	1,3-Bis(1-methylethyl)-benzene	C12H18	0.53 ± 0.07	1.36 ± 0.26	1.22 ± 0.12
43	25.14	2-Methyl-5-(1-methylethyl)-phenol	C10H14O	1.07 ± 0.05	1.22 ± 0.15	1.07 ± 0.11
44	26.10	1,2-Dimethoxy-4-(1-propenyl)-benzene	C11H14O2	1.14 ± 0.35	1.81 ± 0.17	2.39 ± 0.27
45	26.73	-Ylangene	C15H24	0.46 ± 0.04	1.35 ± 0.22	1.66 ± 0.30
46	27.23	-Guaiene	C15H24	0.89 ± 0.10	1.83 ± 0.39	1.76 ± 0.36
47	27.51	1,2-Dihydro-acenaphthene	C12H10	3.05 ± 0.42	3.29 ± 0.59	2.58 ± 0.30
48	28.01	-Ylangene	C15H24	2.32 ± 0.26	2.58 ± 0.44	2.95 ± 0.18
49	28.28	Isoledene	C15H24	0.68 ± 0.06	1.60 ± 0.26	1.49 ± 0.26
50	29.96	1,6,7-Trimethylnaphthalene	C13H14	0.68 ± 0.04	0.92 ± 0.33	0.56 ± 0.14
51	30.86	Palmitic acid	C16H32O2	3.85 ± 0.57	2.27 ± 0.47	3.17 ± 0.39
52	31.29	Caryophyllene oxide	C15H24O	0.88 ± 0.12	1.32 ± 0.37	1.36 ± 0.23
53	31.60	9-Octadecenoate methyl	C19H36O2	0.49 ± 0.06	0.90 ± 0.13	0.90 ± 0.15
54	33.86	Moslene	C10H16	0.97 ± 0.12	0.98 ± 0.05	2.96 ± 0.51
55	35.73	6-Methyl-2-(4-methylphenyl)-5-heptylene	C15H22	—	0.18 ± 0.03	0.20 ± 0.02
56	38.15	Nerolidol	C15H26O	—	0.45 ± 0.09	0.44 ± 0.10
57	39.87	Methyl palmitate	C17H34O2	0.19 ± 0.05	1.14 ± 0.31	0.96 ± 0.23
58	40.49	Stearic acid	C18H36O2	0.05 ± 0.03	1.02 ± 0.43	0.49 ± 0.08
59	41.15	Linoleic acid	C18H32O2	0.13 ± 0.05	1.07 ± 0.20	0.83 ± 0.13

means compared to RB (, , ); means compared to S-VBRB (, , ).