Analysis of Volatile Components of Auricularia auricula from Different Origins by GC-MS Combined with Electronic Nose

Table 2

Composition and relative content of volatile components in the four kinds of Auricularia auricula.

Number	Compound name	Molecular formula	Relative content/%
			Heilongjiang	Jilin	Shanghai	Sichuan
Alcohols
1	Ethanol	C2H6O	38.66	19.41	—	—
2	Isoamyl alcohol	C5H12O	9.12	9.95	8.28	8.78
3	Isobutanol	C5H12O	3.79	—	—	0.54
4	1-Hexanol	C6H14O	2.28	4.17	3.77	2.49
5	1-Butanol	C4H10O	1.37	2.86	2.19	1.53
6	1-Octene-3-ol	C8H18O	1.17	2.44	2.71	1.90
7	4-Methyl-3-heptanol	C8H18O	0.90	1.65	—	0.62
8	1,3,5,7,9-Pentaethyl-1,9-Dibutyl alcohol	C4H10O	0.32	—	—	0.34
9	1-Nonanol	C9H20O	0.26	0.95	0.48	0.15
10	2,3-Dimethyl-1-Butanol	C6H14O	0.25	0.55	—	0.09
11	1-Octanol	C8H18O	0.25	—	0.48	0.18
12	1- Amyl alcohol	C5H12O	2.27	3.92	3.03	4.36
13	2-Methyl-1-propanol	C4H10O	—	2.51	1.10	0.73
14	Linalool	C10H18O	—	—	1.30	1.09
15	Cyclohexanol	C6H14O	1.19	—	—	—
16	5-Methyl-2-(1-methylethyl)- 1-hexanol	C7H16O	0.25	0.22	—	—
17	2-Methyl-1-pentanol	C6H14O	0.13	—	—	—
18	1,4-Pentanediol	C5H12O2	—	0.27	—	—
19	(E)-2-Decen-1-ol	C10H20O	—	0.15	—	—
20	1-Heptanol	C7H16O	—	0.23	—	—
21	Cis-3-nonen-1-ol	C9H18O	—	0.32	—	—
Aldehyde
22	3-Methyl butanal	C5H10O	17.25	0.90	—	—
23	2,4-Dimethylbenzaldehyde	C9H10O	0.79	—	—	—
24	Trans-2-dodecen-1-al	C12H22O	0.63	1.04	—	—
25	(E, E)-2,4-Decadienal	C10H16O	0.50	—	—	—
26	(E, Z)-2,4-Decadienal	C10H16O	0.12	2.40	—	—
27	5-Methyl furfural	C6H6O2	0.07	—	—	—
28	(E, E)-2,4-Dodecadienal	C12H20O	—	0.72	—	—
29	(E)-2-Octenal	C8H14O	—	1.27	—	—
30	(E, E)-2,4-Heptadienal	C7H10O	—	0.47	—	—
31	(E)-2-Nonenal	C9H16O	—	1.96	—	—
32	(Z)-2-Heptenal	C7H12O	—	0.77	—	—
33	Tridecanal	C13H26O	—	0.32	—	—
34	(E, E)-2,4-Nonadienal	C9H14O	—	0.16	—	—
35	(E)-2-Undecenal	C11H20O	—	1.04	—	—
36	2-Methylglutaraldehyde	C6H12O	—	—	1.21	—
37	Hexanal	C6H12O	1.47	3.85	2.52	0.93
38	1-Nonanal	C9H18O	1.31	—	1.17	1.64
39	Pentanal	C5H10O	0.65	2.45	1.76	—
40	Heptanal	C7H14O	0.63	5.78	—	—
41	(E)-2-Heptanal	C7H12O	0.35	1.58	0.57	0.11
42	2-Undecenal	C11H20O	0.29	1.40	0.35	0.43
43	1-Decanal	C10H20O	0.25	0.25	0.07	—
44	3-Furaldehyde	C5H4O2	0.20	—	0.15	—
45	1-Octanal	C8H16O	0.19	0.57	—	0.03
46	2-Dodecenal	C12H22O	0.19	—	0.21	0.36
47	Dodecyl aldehyde	C12H24O	0.19	0.25	—	0.07
48	(E, E)-2,4-Dodecadienal	C12H20O	0.19	0.81	—	—
49	1-Undecanal	C11H22O	0.13	0.39	—	0.06
50	2-Decenal	C10H18O	0.41	1.31	—	—
51	2-Furaldehyde	C5H4O2	—	0.07	—	0.06
52	Trans-4,5-epoxy-2(E)-decenal	C10H16O2	—	1.62	—	—
Acids
53	Acetic acid	CH3COOH	43.09	40.31	50.88	45.59
54	Isovaleric acid	C5H10O2	0.32	1.02	0.54	0.30
55	Caproic acid	C6H12O2	0.29	0.75	0.60	0.19
56	N-Valeric acid	C5H10O2	0.11	0.27	—	0.16
57	Isobutyric acid	C4H8O2	0.13	—	—	—
58	2,4-Dihydroxybenzoic acid	C7H6O4	0.13	—	—	—
59	6-Ethyl-3-dichloroacetic acid	C2H2Cl2O	0.10	—	—	—
60	Nonanoic acid	C9H18O2	—	1.71	—	—
Esters
61	Diethyl azodicarboxylate	C6H10N2O4	57.28	53.59	79.16	50.29
62	Isopentyl acetate	C7H14O2	1.38	1.54	1.80	2.49
63	Isobutyl acetate	C6H12O2	0.95	3.44	—	—
64	Amyl acetate	C7H14O2	0.92	1.12	—	—
65	Gamma-butyrolactone	C4H6O2	0.65	0.85	0.86	1.04
66	Hexyl acetate	C8H16O2	0.38	0.37	0.26	0.21
67	N-Butyl acetate	C6H12O2	0.20	0.29	—	—
68	Hexyl formate	C8H16O2	—	0.40	0.00	—
69	Lactic acid isoamyl ester	C8H16O3	0.40	—	—	—
70	1-Methyl-butyl laurate	C16H32O2	0.15	—	—	—
71	Isobornyl acrylate	C13H20O2	0.32	0.74	0.34	0.69
Hydrocarbons
72	Trichloromethane	CHCl3	1.26	0.69	—	—
73	4,6-Dimethyldodecane	C14H30	0.66	0.54	0.47	1.25
74	2,6,11-tRimethyldodecane	C15H32	0.30	0.15	—	—
75	3-Ethyl-3-methylheptane	C10H22	0.24	0.16	0.23	—
76	4,5-Dimethylnonane	C10H22	0.22	0.29	—	—
77	Dodecane	C12H26	—	0.36	—	—
78	Pentacosan	C25H52	0.14	0.44	0.07	0.03
79	2-Methyl-tetracosane	C25H52	0.08	0.38	—	—
80	6-Ethyl-2-methyl-octane	C11H24	0.06	—	—	—
81	2-Methyl-7-oxazolyl [2.2.1] heptane	C7H12O	—	0.74	—	—
82	1,2-Dimethylcyclopentane	C7H14	—	0.16	—	—
83	1-Bromododecane	C12H25Br	—	0.23	—	—
84	Octadecane	C18H38	—	0.14
85	4-Methyl-5-propylnonane	C9H20	—	—	0.15	—
86	2,6,10-Trimethyldodecane	C15H32	—	—	—	0.15
87	Methylbenzene	C7H8	2.11	—	—	—
88	1-Undecyne	C11H20	—	0.27	—	—
89	O-Cymene	C10H14	—	—	0.62	—
90	D-Limonene	C10H16	—	—	5.28	—
Others
91	N-Butylbenzenesulfonamide	C10H15NO2S	0.55	0.93	0.92	0.81
92	2-Methylpyrazine	C5H6N2	0.53	0.07	—	—
93	Acetonitrile	C2H3N	0.40	7.69	1.69	0.03
94	Cholesterol	C27H46O	—	—	—	5.92
95	Anethole	C10H12O	0.45	—	0.78	0.46
96	1-Methoxy-2-propanol	C4H10O2	—	—	—	0.16
97	5-Methyl-2 (3H)-Furanone	C5H6O2	0.09	0.16	0.30	0.07
98	2-Pentylfuran	C9H14O	0.46	0.96	0.83	0.34

Note. “—” means not detected.