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. 2020 Oct 5;57(5):1129–1144. doi: 10.3892/ijo.2020.5130

Table I.

Peak list, diagnostics and quantitative data of the metabolites from the J. regia fruit septum leaves ethanolic extract.

Peak no. Retention time, mina Tentative compound identification Biochemical class UV-vis, nmb MW ESI, m/z Extract weight, mg/100 mg Dry vegetable matrix weight, mg/g
1 4.57 Gallic acidd Organic acids 270.7 170 269c (M-H) 0.413 0.108
2 5.41 Galloyl hexose isomer 1 Gallotannins 265.4 332 331 (M-H) 0.284 0.074
3 6.13 Pedunculagin (bis HHDP- hexose) Gallotannins 281.2 784 783 (M-H). 481c 3.500 0.913
4 6.79 Protocatechuic acid Organic acids 294.259 154 153c (M-H) 0.299 0.078
5 7.25 Galloyl hexose isomer 2 Gallotannins 269.5 332 331c (M-H). 271 0.459 0.120
6 7.56 Galloyl HHDP hexose Gallotannins 276.4 634 633 (M-H). 463c 0.138 0.036
7 7.84 Digalloyl hexose isomer 1 Gallotannins 275.3 484 483 (M-H) 0.091 0.024
8 8.22 Epigallocatechind Flavan-3-ols 276.2 306 305 (M-H) 0.159 0.041
9 8.59 Vanillic acidd Organic acids 310. 279 168 167 (M-H) 0.340 0.089
10 9.18 P-coumaric acid hexoside Hydroxycinnamic acids 310.6. 295 sh 326 325 (M-H). 191c 0.592 0.154
11 9.75 Catechind Flavan-3-ols 276.7 290 289 (M-H). 245 1.461 0.381
12 10.24 Galloyl HHDP- hexose isomer Gallotannins 282.1 634 633c (M-H) 0.078 0.020
13 11.04 Epicatechin Flavan-3-ols 277.1 290 289 (M-H) 0.068 0.018
14 11.37 Digalloyl hexose isomer 2 Gallotannins 285.8 484 483c (M-H). 331 0.246 0.064
15 11.63 Trigalloyl hexose isomer 1 Gallotannins 282.9 636 635 (M-H). 465c 0.657 0.171
16 11.94 Trigalloyl hexose isomer 2 Gallotannins 280.1 636 635 (M-H) 0.159 0.041
17 13.83 Epigallocatechingallated Flavan-3-ols 276.8 458 457 (M-H). 289c 0.515 0.134
18 14.38 Trigalloyl hexose isomer 3 Gallotannins 279.8 636 635 (M-H). 465c.423 2.993 0.780
19 17.79 Tetragalloyl hexose isomer 1 Gallotannins 278.7 788 787 (M-H). 617c 3.204 0.836
20 18.69 Ellagic acid hexoside isomer 1 Ellagic acid derivatives 360.3. 301sh. 252.6 464 463 (M-H).301c 1.513 0.395
21 19.40 Tetragalloyl hexose isomer 2 Gallotannins 284.2 788 787 (M-H) 0.151 0.039
22 20.16 Ellagic acid hexoside isomer 2 Ellagic acid derivatives 365.5. 300sh. 252.8 464 463c (M-H). 301 6.162 1.607
23 21.14 Quercetin 3-O-glucosided Flavonols 354. 256.2 464 463c (M-H). 301 0.402 0.105
24 21.76 HHDP-hexose isomer Gallotannins 281.5 482 481c (M-H). 301 0.512 0.134
25 22.54 Pentagalloyl hexose isomer Gallotannins 280.7 940 939 (M-H) 0.185 0.048
26 24.78 Quercetin 3-O-rhamnoside (quercitrin) Flavonols 349.3. 256.2 448 447c (M-H). 301 2.163 0.564
27 25.72 Digalloyl hexose isomer 3 Gallotannins 282.8 484 483 (M-H). 331c 0.205 0.053
28 26.51 Ellagic acid pentoside Ellagic acid derivatives 365.1. 300sh. 262.8 434 433c (M-H). 301 0.084 0.022
29 28.67 Valoneic acid dilactone derivative Ellagic acid derivatives 364.9. 290sh. 263.8 632 631(M-H). 469c. 301 5.632 1.469
30 29.39 Tellimagrandin I (digalloyl-HHDP-hexose) Gallotannins 272.3 786 785 (M-H). 633 0.239 0.062
a

Mean from three replicates.

b

From high-performance liquid chromatography.

c

Base peak.

d

Co-injection with a pure analytical standard. ESI, electrospray ionization tandem; M-H, pseudomolecular ion obtained at the ion source using single proton loss; sh, shoulder peak.