No | Polyphenolic compound | Rt (min.) | M+calc. | Major neutral fragments (m/z %) |
---|---|---|---|---|
4-Hydroxyquinoline | 16.38 | 217 | 73(29), 101(13), 172(18), | |
16.51 | 282 | 73(74), 193(56), 223(71), | ||
29.30 | 396 | |||
Kynurenic acid | 27.67 | 333 | 73(85), 231(81), 288(21), 304(34), | |
Methyl syringate | 21.30 | 284 | 73(26), 223(24), |
Number | Phenolic compound | Molecular formula | Rt (min) | Molecular weight (exact) | [M-H]− | [2M-H]− |
---|---|---|---|---|---|---|
Jujube honeys (Morocco) | ||||||
4-Hydroxyquinoline glucoside | C15H17NO6 | 11.97 | 307.106 | 306.2 | 613.1 | |
4-Hydroxyquinoline | C9H7NO | 17.45 | 145.053 | 144.2 | 289.1 | |
C7H6O3 | 19.82 | 138.032 | 137.2 | 275.2 | ||
Caffeic acid | C9H8O4 | 22.11 | 180.042 | 179.1 | 359.1 | |
Kynurenic acid | C10H7NO3 | 26.03 | 189.043 | 188.1 | 377.1 | |
Methyl syringate | C10H12O5 | 35.69 | 212.068 | 211.1 | 423.0 | |
Chestnut honey (Italy) | ||||||
4-(1′-Hydroxy-1′-dimethyl) cyclohexa-1,3-diene-1 carboxylic acid-1-gentobioside | C22H34O13 | 15.18 | 505.199 | 505.2 | 1011.4 | |
3-PKA | C14H14N2O3 | 16.28 | 258.100 | 257.1 | n.d. | |
Caffeic acid | C9H8O4 | 17.99 | 180.042 | 179.1 | 359.1 | |
C9H8O3 | 21.48 | 164.047 | 163.1 | 327.1 | ||
4-(1′-Hydroxy-1′-dimethyl) cyclohexa-1,3-diene-1 carboxylic acid | C10H14O3 | 22.31 | 182.094 | 181.2 | 363.1 | |
Kynurenic acid tautomer | C10H7NO3 | 22.54 | 189.042 | 188.1 | 377.1 | |
Gamma-Lact-3-PKA | C14H12N2O2 | 24.32 | 240.089 | 239.1 | n.d. | |
Kynurenic acid | C10H7NO3 | 30.62 | 189.042 | 188.1 | 377.1 |
Number | Phenolic compound | Jujube honey samples (mg/kg) | |||
H1 | H2 | H3 | H4 | ||
Jujube honeys (Morocco) | |||||
4-Hydroxyquinoline glucoside | 3.58±0.28 | 3.67±0.19 | 2.61±0.10 | 8.11±0.32 | |
4-Hydroxyquinoline | 3.38±0.37 | 3.38±0.09 | 3.38±0.18 | 16.29±0.86 | |
1.55±0.06 | 1.60±0.28 | 1.16±0.11 | 2.43±0 | ||
Caffeic acid | 1.41±0.13 | 1.18±0.04 | 0.77±0.07 | 3.44±0 | |
Kynurenic acid | 7.08±0.30 | 6.69±0.30 | 3.89±0.30 | 8.58±0.20 | |
Methyl syringate | 12.24±0.18 | 12.98±0.92 | 4.83±0.12 | 3.31±0.09 | |
Total (mg/kg) | 29.24±1.42 | 29.50±1.27 | 16.64±0.67 | 42.16±1.07 | |
Chestnut honey (Italy) | |||||
Number | Phenolic compound | H5 | |||
mg/kg | |||||
4-(1′-Hydroxy-1′-dimethyl) cyclohexa-1,3-diene-1 carboxylic acid-1-gentobioside | 305±4 | ||||
3-PKA | 187±3 | ||||
Caffeic acid | 13±0.1 | ||||
7±0.1 | |||||
4-(1′-Hydroxy-1′-dimethyl) cyclohexa-1,3-diene-1 carboxylic acid | 179±11 | ||||
Kynurenic acid tautomer | 94±2 | ||||
Gamma-Lact-3-PKA | 43±2 | ||||
Kynurenic acid | 1246±17 | ||||
Total terpenoids (mg/kg) | 484 | ||||
Total alkaloids (mg/kg) | 1570 | ||||
Total polyphenols (mg/kg) | 20 | ||||
Total (mg/kg) | 2074 |