Characterization of the Phytochemical Constituents of Taif Rose and Its Antioxidant and Anticancer Activities
Table 4
Peak assignment, molecular weight (MW), molecular ion (M−), mass ion fragments, and tentative identification of compounds detected in 80% methanol extract, -butanol, and aqueous fractions of fresh and dry Taif rose by LC-ESI(−ve)-MS.
Peak number
MW
Tentative identification
M−
Fragments
1
192
191
127, 93, 85
Quinic acid
2
170
169
125, 79
Gallic acid
3
484
483
331, 313, 169, 125
Digalloyl hexose
4
184
183
169, 147, 124, 78
Methyl gallic acid derivative
5
786
785
633, 615, 483, 301, 169, 125
Digalloyl DHHP hexose
6
466
465
313, 301, 169, 147, 125
Digalloyl deoxyhexose
7
786
785
633, 615, 483, 331, 313, 301, 169, 125
Digalloyl DHHP hexose
8
968
967
785, 765, 667, 505, 301, 183, 169
Unknown ellagitannin
9
968
967
785, 765, 633, 615, 483, 451, 301, 182, 169, 125
Unknown ellagitannin
10
938
937
783, 657, 465, 301, 169, 125
Unknown ellagitannin
11
968
967
785, 765, 639, 450, 314, 301, 169, 147, 124
Unknown ellagitannin
12
616
615
463, 313, 301, 169
Quercetin-3-glucose-()-gallic acida
13
938
937
785, 766, 615, 313, 301, 183, 169, 125
Unknown ellagitannin
14a
610
609
463, 301
Rutina
14b
464
463
301, 229, 179, 150
Quercetin 3-O-β-D-glucosidea
15
600
599
463, 300, 179, 169, 151
Quercetin-hexose-protocatechuic acid
16
434
433
301, 151, 179
Quercetin-O-pentose
17
600
609
447, 435, 284, 169, 151
Kaempferol-hexose-gallic acid
18
610/594
609/593
435, 433, 301, 285, 169, 151
Quercetin/Kaempferol derivatives
19
448
447
284, 179, 151
Kaempferol 3-O-β-D-glucosidea
20
600
599
447, 285, 197, 169, 151
Kaempferol-O-hexose-O-gallic acid
21
418
417
284, 197, 227
Kaempferol-O-pentose
22
594
593
417, 285, 197, 151, 147
Kaempferol-O-pentose-O-glucuronic acid
23
432
431
284, 255, 227
Kaempferol 3-O-α-rhamnosidea
24
652
651
609, 447, 301, 147
Quercetin acetyldisaccharides
25
610
609
463, 447, 301, 147
Quercetin-O-hexose-O-deoxyhexose
26
636
635
487, 285
Kaempferol acetyldisaccharides
27
594
593
447, 430, 285, 151
Kaempferol-O-hexose-O-deoxyhexose
28
605
604
582, 462, 342
Unknown non-phenolic compound
Standard compounds
S1
290
289
244, 221, 150, 136, 123
Catechin
S2
304
303
284, 274, 217, 179, 151
Taxifolin
S3
616
615
463, 313, 301, 271, 169, 151, 147
Quercetin-3-glucose-6-gallic acid
S4
610
609
463, 301, 179, 151, 147
Rutin
S5
464
463
300, 271, 254, 179, 151
Quercetin 3-O-β-D-glucoside
S6
448
447
300, 270, 179, 151
Quercetin 3-O-α-rhamnoside
S7
448
447
284, 179, 151
Kaempferol 3-O-β-D-glucoside
S8
432
431
248, 254, 227, 198, 147
Kaempferol 3-O-α-rhamnoside
S9
302
301
179, 151
Quercetin
S10
270
269
225, 199, 159, 151, 117
Apigenin
Compounds identified by comparison with standards.