Table 2. LC-MS results of metabolites identified in Elaeagnus multiflora fruit vinegar

No. tR Fragment ions (m/z) Molecular formula (MW) Predicted compound
Positive Negative
1 0.50 175.12([M+H]+) 173.10([M-H]) C6H14N4O2 (174) Arginine
2 0.82 335.10([M+Na]+) 311.10([M-H]), 203.02 C11H20O10 (312) Disaccharide
3 0.83 177.07([M+H]+) 175.06([M-H]), 155.04 C7H12O5 (176) Isopropylmalic acid isomer
4 0.83 ND 133.01([M-H]), 115.00 C4H6O5 (134) Malic acid
5 1.10 ND 191.02([M-H]), 111.01 C6H8O7 (192) Citric acid
6 1.82 157.05([M+Na]+) 133.05([M-H]), 89.02 C5H10O4 (134) Deoxyribose
7 2.32 141.02([M+Na]+) 117.02([M-H]), 99.01 C4H6O4 (118) Succinic acid
8 2.50 171.03([M+Na]+) 147.03([M-H]), 129.02 C5H8O5 (148) Citramalic acid
9 3.01 149.02([M+Na]+) 125.02([M-H]) C6H6O3 (126) Pyrogallol
10 3.41 185.04([M+Na]+) 161.05([M-H]), 143.03 C6H10O5 (162) Meglutol
11 3.76 171.03([M+H]+) 169.01([M-H]), 125.02 C7H6O5 (170) Gallic acid
12 4.45 169.05([M+Na]+) 145.05([M-H]), 101.06 C6H10O4 (146) Adipic acid
13 4.57 ND 131.03([M-H]), 113.03 C5H8O4 (132) Glutaric acid
14 4.72 ND 147.07([M-H]), 121.03 C6H12O4 (148) Mevalonic acid
15 5.46 ND 167.03([M-H]), 108.02 C8H8O4 (168) Dihydroxyphenylacetic acid
16 5.67 155.03([M+H]+) 153.02([M-H]), 109.03 C7H6O4 (154) Protocatechuic acid
17 5.82 220.12([M+H]+) 218.10([M-H]), 146.08 C9H17NO5 (219) Pantothenic acid
18 5.96 ND 117.06([M-H]), 71.05 C5H10O3 (118) Hydroxyisovaleric acid
19 6.24 ND 109.03([M-H]), 108.02 C6H6O2 (110) Catechol
20 6.68 205.05([M+Na]+) 181.05([M-H]), 163.04 C9H10O4 (182) Hydroxyphenyllactate isomer
21 7.13 155.03([M+H]+) 153.02([M-H]), 109.03 C7H6O4 (154) 2,5-Dihydroxybenzoic acid
22 7.29 121.07([M+H]+) 119.05([M-H]), 91.05 C8H8O (120) Phenylacetaldehyde
23 7.33 199.06([M+Na]+) 175.06([M-H]), 115.04 C7H12O5 (176) Isopropylmalic acid isomer
24 7.66 254.10([M+H]+) 252.09([M-H]), 161.08 C12H15NO5 (253) Unknown
25 7.80 183.06([M+H]+) 181.05([M-H]), 151.04 C9H10O4 (182) Hydroxyphenyllactate isomer
26 7.99 153.05([M+H]+) 151.04([M-H]), 135.04 C8H8O3 (152) Unknown
27 8.07 159.09[M+H]+) 157.01([M-H]) C8H12O6 (204) Unknown
28 8.23 181.05([M+H]+) 179.03([M-H]), 135.04 C9H8O4 (180) Caffeic acid
29 8.53 133.08([M+H]+) 131.07([M-H]), 113.06 C6H12O3 (132) Leucic acid isomer
30 8.63 133.08([M+H]+) 131.07([M-H]), 113.06 C6H12O3 (132) Leucic acid isomer
31 8.78 133.08([M+H]+) 131.07([M-H]), 113.06 C6H12O3 (132) Leucic acid isomer
32 8.97 243.13([M+H]+) 241.12([M-H]), 168.00 C11H18N2O4 (242) 3'-Hydroxypentobarbital
33 9.05 289.08([M+H]+) 287.07([M-H]) C14H12N2O5 (288) Unknown
34 9.34 204.12([M+H]+) 202.11([M-H]) C9H17NO4 (203) Unknown
35 9.45 174.11([M+H]+) 172.10([M-H]), 130.09 C8H15NO3 (173) Acetylisoleucine
36 9.67 399.13([M+H]+) 397.11([M-H]), 223.06 C18H22O10 (398) Sinapoylquinic acid
37 9.76 165.05([M+H]+) 163.04([M-H]), 119.05 C9H8O3 (164) Coumaric acid
38 9.83 199.06([M+H]+) 197.05([M-H]), 124.02 C9H10O5 (198) Ethyl gallate
39 9.93 189.05([M+Na]+) 165.06([M-H]), 147.05 C9H10O3 (166) Phenyllactic acid
40 10.16 197.08([M+Na]+) 173.08([M-H]), 111.08 C8H14O4 (174) Fatty acid ester
41 10.36 208.10([M+H]+) 206.08([M-H]), 164.07 C11H13NO3 (207) Acetyl phenylalanine
42 10.70 269.09([M+Na]+) 245.09([M-H]) C13H14N2O3 (246) Acetyl tryptophan
43 10.77 206.08([M+H]+) 204.07([M-H]) C11H11NO3 (205) Indolelactic acid
44 10.90 238.11([M+H]+) 236.09([M-H]) C12H15NO4 (237) Lactoyl phenylalanine
45 11.11 413.12([M+Na]+) 389.12([M-H]), 341.10 C20H22O8 (390) Piceid
46 11.82 139.04([M+H]+) 137.02([M-H]), 93.03 C7H6O3 (138) 4-Hydroxybenzoic acid
47 12.45 443.13([M+Na]+) 419.13([M-H]) C21H24O9 (420) Unknown
48 13.24 223.10([M+Na]+) 199.10([M-H]), 155.11 C10H16O4 (200) Camphoric acid
49 14.28 225.11([M+Na]+) 201.11([M-H]), 183.10 C10H18O4 (202) Sebacic acid
50 14.45 303.05([M+H]+) 301.03([M-H]), 178.99 C15H10O7 (302) Quercetin
51 14.57 433.11([M+H]+) 431.10([M-H]), 285.04 C21H20O10 (432) Kaempferol-7-O-rhamnoside
52 15.07 584.28([M+H]+) 582.26([M-H]), 462.20 C34H37N3O6 (583) Tricoumaroyl spermidine
53 15.33 584.28([M+H]+) 582.26([M-H]), 462.20 C34H37N3O6 (583) Tricoumaroyl spermidine
54 16.05 607.22([M+Na]+) 583.22([M-H]) C31H36O11 (584) Lignans
55 16.30 287.06([M+H]+) 285.04([M-H]), 255.03 C15H10O6 (286) Kaempferol
56 16.73 317.07([M+H]+) 315.05([M-H]), 300.03 C16H12O7 (316) Isorhamnetin
57 17.00 369.22([M+Na]+) 345.23([M-H]) C18H34O6 (346) Fatty acids
58 17.08 ND 227.13([M-H]) C12H20O4 (228) Fatty acids
59 17.37 287.06([M+H]+) 331.25([M-H]), 313.24 C18H36O5 (332) Fatty acids
LC-MS, liquid chromatography-mass spectrometry; ND, not detected.