Determination of Polar Compounds in Guava Leaves Infusions and Ultrasound Aqueous Extract by HPLC-ESI-MS
Table 2
Quantification (mean ± SD, n = 3) of the compounds identified in guava leaves infusions and ultrasound aqueous extract.
Number
Compounds
Quantification (μg analyte/g leaves)
AE
I3
I5
I7
1
HHDP glucose isomer
1146 ± 34c
2256 ± 37a
2253 ± 27a
2021 ± 67b
2
HHDP glucose isomer
228 ± 40b
441 ± 72a
368 ± 59a,b
397 ± 93a,b
3
HHDP glucose isomer
1424 ± 48c
1756 ± 39a
1762 ± 12a
1546 ± 27b
4
Gallic acid
719 ± 33a
240 ± 5b
260 ± 5b
254 ± 9b
5
Prodelphinidin B2 isomer
665 ± 55a
212 ± 11b
220 ± 12b
126 ± 8c
6
Pedunculagin/casuariin isomer
2405 ± 38a
573 ± 14c
688 ± 5b
533 ± 6c
7
Prodelphinidin dimer isomer
1768 ± 90a
444 ± 26b
467 ± 20b
335 ± 11b
8
Gallocatechin
5887 ± 273a
2419 ± 19b
2301 ± 43b,c
1960 ± 77c
9
Prodelphinidin dimer isomer
5452 ± 308a
1526 ± 4b
1688 ± 40b
1309 ± 34b
10
Geraniin isomer
1396 ± 47a
304 ± 1b
318 ± 12b
201 ± 8c
11
Pedunculagin/casuariin isomer
2894 ± 46a
687 ± 9c
814 ± 19b
624 ± 6c
12
Geraniin isomer
2333 ± 160a
433 ± 26b
457 ± 8b
304 ± 3b
13
Procyanidin B isomer
17659 ± 785a
6703 ± 124b
7106 ± 51b
6105 ± 34b
14
Procyanidin B isomer
1751 ± 150a
398 ± 10b
413 ± 10b
321 ± 9b
15
Tellimagrandin I isomer
728 ± 26a
141 ± 2c
184 ± 5b
129 ± 2c
16
Catechin
12875 ± 705a
6127 ± 80b
5960 ± 19b
5192 ± 2b
17
Casuarinin/casuarictin isomer
8725 ± 216a
482 ± 1c
859 ± 21b
590 ± 17b,c
18
Tellimagrandin I isomer
1492 ± 46a
186 ± 6b,c
243 ± 9b
164 ± 3c
19
Gallocatechin
5866 ± 362a
2205 ± 134b,c
2446 ± 21b
1896 ± 13c
20
Myricetin-arabinoside/xylopyranoside isomer
608 ± 18a
<LOQ
<LOQ
<LOQ
21
Procyanidin B isomer 2
1206 ± 56a
207 ± 14b,c
224 ± 7b
136 ± 6c
22
Myricetin hexoside isomer
1301 ± 44a
<LOQ
<LOQ
<LOQ
23
Myricetin hexoside isomer
331 ± 2a
245 ± 2c
299 ± 3b
232 ± 4d
24
Myricetin-arabinoside/xylopyranoside isomer
639 ± 29a
<LOQ
<LOQ
<LOQ
25
Quercetin-galloylhexoside isomer
566 ± 20a
148.3 ± 0.1b
171 ± 2b
149 ± 1b
26
Quercetin-galloylhexoside isomer
452 ± 15a
97.25 ± 0.02b
102.3 ± 0.4b
92.25 ± 0.07b
27
Myricetin-arabinoside/xylopyranoside isomer
592 ± 24a
<LOQ
<LOQ
<LOQ
28
Morin
8377 ± 464a
3235 ± 53b,c
3676 ± 12b
3003 ± 18c
29
Myricetin-arabinoside/xylopyranoside isomer
986 ± 28a
<LOQ
<LOQ
<LOQ
30
Ellagic acid
4338 ± 234a
1082 ± 16b
1367 ± 14b
1040 ± 9b
31
Hyperin
7798 ± 280a
2492 ± 6c
2891 ± 7b
2031 ± 18d
32
Quercetin glucuronide
2293 ± 91a
1249 ± 19c
1612 ± 40b
1132 ± 7c
33
Isoquercitrin
4408 ± 182a
1111 ± 19b,c
1306 ± 5b
996 ± 3c
34
Reynoutrin
5849 ± 173a
1386 ± 21b,c
1611 ± 20b
1229 ± 9c
35
Guajaverin
12843 ± 421a
3169 ± 40b,c
3595 ± 4b
2713 ± 36c
36
Guavinoside A
1920 ± 40a
453 ± 3c
522 ± 1b
413 ± 2c
37
Avicularin
13666 ± 421a
3825 ± 48b
4183 ± 34b
3232 ± 25c
38
Quercitrin
6822 ± 274a
1825 ± 39b
2078 ± 24b
1705 ± 12b
39
Guavinoside C
2298 ± 40a
<LOQ
<LOQ
<LOQ
40
Guavinoside B
1456 ± 34a
370 ± 3c
423 ± 4b
328.6 ± 0.1c
41
Guavinoside A isomer
558 ± 4a
177 ± 1b
160 ± 4c
140.0 ± 0.3d
42
Prodelphinidin B2 isomer 2
<LOQ
<LOQ
<LOQ
<LOQ
43
Guavinoside B isomer
<LOQ
<LOQ
<LOQ
<LOQ
44
Guavinoside B isomer
<LOQ
nd
nd
nd
45
Guavinoside B isomer
<LOQ
nd
nd
nd
46
Guavin B
460 ± 6a
34 ± 1b
32.2 ± 0.2b
20 ± 1c
47
Quercetin
408 ± 18a
nd
nd
nd
48
Naringenin
538 ± 14c
941 ± 3a
815 ± 24b
558 ± 9c
n.d.: not detected; AE: aqueous extract obtained by ultrasound; I3, I5, and I7: infusion obtained at 3, 5, and 7 minutes of infusion time, respectively.
The different letter in the same line means that the compounds are significantly different (P ≤ 0.05).