Skip to main content
. 2017 Jun 1;65(24):4911–4920. doi: 10.1021/acs.jafc.7b01897

Table 1. Overview of Phenolics Annotated and Quantitated in the Aqueous Methanolic Extracts from Sugar Beet Leaves.

cmpd no. UV max [M – H]−m/z MS2m/z MS3m/z identification MWCF 3m(mg/g FW) 8m (mg/g FW)
Caffeic Acid Derivatives
1a 355b 215 179c, 161 161, 89 caffeic acid derivative 1.20 0.08 0.17
2 267, 379 341 179, 135 143, 135 caffeic acid O-β-hexoside13,17 1.91 0.94 2.12
4 280, 320 661 661, 306 306, 593, 272, 481, 179, 161 caffeoyl-spermine-hexosyl ester14 4.32 0.04 0.02
6 279, 339 383 341, 343, 179 179, 161, 119 caffeic acid hexosyl-acetyl ester 2.14 n.q.d 0.18
7 –b 297 179, 161, 237 161, 89, 135 O-caffeoyl threonic acid ester30 1.66 0.01 0.02
11 279, 339 261 181, 199, 215 163, 135, 119 dihydrocaffeic acid sulfate ester 1.46 n.q. 0.03
18 288, 309 487 307, 427, 325, 161, 193   caffeoyl-feruolyltartaric acid31 2.72 n.q. 1.47
                 
Amino Derivatives
3 280 330 222, 240, 252 150, 135, 109 dehydro-dopamine derivative 1.84 n.q. n.q.
5 280 314 224, 278, 194 152 dopamine-hexosyl ester 1.75 0.12 0.17
8 261 344 150, 133 133, 107 dehydrodopamine derivative 1.92 0.02 0.06
9 277 282 150 133 dehydrodopamine O-pentoside 1.58 n.q. n.q.
10 279 192 192, 150 150, 121 acetyl-dehydrodopamine 1.07 n.q. n.q.
13 280 203 159, 131, 203 131, 148 tryptophan23 1.13 n.q. n.q.
16 284 354 192, 264, 294 150, 174, 192, 232 dehydrodopamine-hexosyl-acetyl ester 1.98 n.q. n.q.
                 
Sinapic Acid Derivatives
12 281, 310 439 241 97, 139, 223 unidentified sinapic acid ester 2.45 n.q. n.q.
21 281, 320 651 223, 489 208, 179 sinapic acid O-hexosyl derivative 3.64 0.01 0.70
24 280, 322 445e 385 223, 295, 265, 153, 161, 179 sinapic acid O-hexosyl ester14 2.49 0.16 0.34
29 325 489 223, 205 164, 179 sinapic acid derivative 2.73 0.24 0.21
                 
5-OH Ferulic Acid Derivatives
14 309 355 191, 209, 147 85, 147 5-OH ferulic acid O-deoxyhexoside 1.98 n.q n.q
15 311 355 191, 265, 209, 111 85, 147 5-OH ferulic acid O-deoxyhexoside ester 1.98 n.q. n.q.
                 
Coumaric Acid Derivatives
17 288 305 225, 165, 97 165, 181, 147 dihydro-p-coumaric acid derivative 1.70 n.q. 0.01
22 284, 309 337 191, 289, 163 85, 147, 173 5-p-coumaroylquinic acid21 1.88 0.2f 0.28
25 284, 309 337 173, 191, 163, 130 85, 57, 111 4-p-coumaroylquinic acid 1.88    
                 
Ferulic Acid Derivatives
20 325b 621 193, 459, 445, 265 149, 178, 134 Ferulic acid O-hexosyl ester derivative 3.47 0.04 0.63
23 292, 314 487 193, 355, 149 149, 178, 193, 134 ferulic acid O-pentosyl-hexoside 2.72 n.q. n.q.
26 283, 309 445 283, 343, 301, 401 138, 165, 193, 286 ferulic acid O-hexosyl-derivative 2.49 n.q. 0.26
27 280, 325 355 193, 265, 235, 175, 217, 134 134, 149, 178 ferulic acid-hexosyl ester 1.98 0.32 0.46
28 287, 323 517 193, 355, 337 134, 149, 178 ferulic acid O-dihexosyl ester 2.89 0.4 0.13
30 285, 323 443 267, 193, 134 249, 113, 175 ferulic acid derivative14 2.47 0.29 0.12
31 282, 326 473 267, 193 249, 113, 175 ferulic acid derivative 2.64 0.39 0.53
                 
Quercetin Derivatives
32 271, 301, 395 625 301, 300, 273, 179 179, 257, 151 quercetin O-dihexoside8,15 1.45 0.03 0.05
                 
Vitexin Derivatives
33 269, 331 593 431, 293 293 vitexin-2″-O-hexoside19,21 1.38 0.34 0.41
34 269, 332 563 413, 443, 311, 293 293 vitexin-2″-O-pentoside7,19 1.31 0.34 0.36
35 269, 330 431 311, 341, 191 283, 311, 191 vitexin 1.00 n.q 0.02
36 269, 330 635 473, 311 311, 413 vitexin O-hexoside 1.47 0.30 0.20
38 269 679 635, 593 455, 413, 293, 269 malonyl-hexosylvitexin 1.58 n.q. n.q.
40 269, 330 649 605, 455 455, 311, 473, 563, 269 malonyl-pentosylvitexin 1.51 0.13 0.13
41 268, 331 473 413, 293 293, 161 vitexin acetyl derivative 1.10 0.03 n.q.
                 
iso-Rhamnetin Derivatives
37 254, 351 639 315, 300, 271, 255 300, 315, 287, 107, 151 iso-rhamnetin O-dihexoside7,15 1.48 0.14 0.35
39 267, 341 609 315, 300 300 isorhamnetin derivative32 1.41 0.13 0.09
a

The numbers correspond to the peak numbers in Figure 3. MWCF, molecular weight correction factors used for quantitation.

b

Co-elution with other unidentified compounds; therefore, absorbance maxima were not or only partially provided.

c

Bold numbers represent a relative abundance of 100%. Values underlined represent diagnostic ions for the respective compounds.14,15,19

d

n.q. = not quantitated, concentration was below the limit of quantitation.

e

Parent ion for compound 24 is supposed to be an acetic acid adduct (M + 60 – H]−.

f

For quantitation, 22 and 25 were combined.