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

Table 4

ROAV value of each component detected in A. auricula.

Number	Compound name	Aroma threshold (μg/kg)	ROAV
			Heilongjiang	Jilin	Shanghai	Sichuan
1	Ethanol	100000	0.00	0.00	—	—
2	Isoamyl alcohol	120	0.18	0.34	2.55	3.85
3	1-Hexanol	250	0.02	0.07	0.56	0.52
4	1-Butanol	5000	0.00	0.00	0.02	0.02
5	1-Octene-3-ol	1	2.71	9.96	100.00	100.00
6	1-Nonanol	50	0.01	0.08	0.35	0.16
7	1-Octanol	120	0.00	—	0.15	0.08
8	1- Amyl alcohol	4000	0.00	0.00	0.03	0.06
9	1-Heptanol	330	—	0.00	—	—
10	cis-3-Nonen-1-ol	1	—	1.31	—	—
11	3-Methyl butanal	0.4	100.00	9.18	—	—
12	(E, E)-2,4-Decadienal	0.07	16.56	—	—	—
13	(E)-2-Octenal	3	—	1.73	—	—
14	(E)-2-Nonenal	0.08	—	100.00	—	—
15	(E, E)-2,4-Nonadienal	0.09	—	7.26	—	—
16	Hexanal	4.5	0.76	3.49	20.66	10.88
17	1-Nonanal	1	3.04	—	43.17	86.32
18	Pentanal	20	0.08	0.50	3.25	—
19	Heptanal	3	0.49	7.86	—	—
20	(E)-2-Heptanal	13	0.06	0.50	1.62	0.45
21	1-Decanal	1	0.58	1.02	2.58	—
22	1-Octanal	0.7	0.63	3.32	—	2.26
23	(E)-2-decenal	0.3	3.17	17.82	—	—
24	2-Furaldehyde	3000	—	0.00	—	0.00
25	Acetic acid	22000	0.00	0.01	0.09	0.11
26	Nonanoic acid	3000	—	0.00	—	—
27	N-Butyl acetate	66	0.01	0.02	—	—
28	Dodecane	2040	—	0.00	—	—
29	2-Pentylfuran	6	0.18	0.65	5.10	2.98
30	Undecanal	5	0.06	0.32	—	0.63

Note. “—“ means not detected.