Determination of Polar Compounds in Guava Leaves Infusions and Ultrasound Aqueous Extract by HPLC-ESI-MS

Table 1

Identification of polar compounds in guava leaves by HPLC-DAD-ESI-MS.

Number	Compounds	(nm)	[M–H]^−	Fragments
1	HHDP glucose isomer	290	481	301
2	HHDP glucose isomer	290	481	301
3	HHDP glucose isomer	290	481	301
4	Gallic acid	272, 225	169	125
5	Prodelphinidin B2 isomer	280, 360	609	423, 441, 305
6	Pedunculagin/casuariin isomer	253, 377	783	481, 301
7	Prodelphinidin dimer isomer	280, 340	593	407, 425
8	Gallocatechin	236, 270sh	305	179, 221
9	Prodelphinidin dimer isomer	280, 340	593	407, 425
10	Geraniin isomer	270	951	783, 481, 301
11	Pedunculagin/casuariin isomer	253, 377	783	481, 301
12	Geraniin isomer	270	951	783, 481
13	Procyanidin B isomer	278, 234	577	289
14	Procyanidin B isomer	278, 235	577	289
15	Tellimagrandin I isomer	279, 340	785	615, 301
16	Catechin	236, 281	289	245, 205, 179
17	Casuarinin/casuarictin isomer	238, 275sh	935	783
18	Tellimagrandin I isomer	277, 338	785	615, 301
19	Gallocatechin	236, 270sh	305	179, 221
20	Myricetin-arabinoside/xylopyranoside isomer	264, 231sh, 356	449	316, 317
21	Procyanidin B isomer 2	268, 350	577	425, 289
22	Myricetin hexoside isomer	261, 231sh, 358	479	316, 317
23	Myricetin hexoside isomer	264, 235sh, 356	479	316, 317
24	Myricetin-arabinoside/xylopyranoside isomer	264, 231sh, 356	449	316, 317
25	Quercetin-galloylhexoside isomer	268, 350	615	463, 301
26	Quercetin-galloylhexoside isomer	280, 345	615	463, 301
27	Myricetin-arabinoside/xylopyranoside isomer	256, 234sh, 356	449	316, 317
28	Morin	232sh, 257, 374	301	151
29	Myricetin-arabinoside/xylopyranoside isomer	257, 231sh, 356	449	316, 317
30	Ellagic acid	254, 370	301	257, 185
31	Hyperin	259, 355, 235sh	463	301
32	Quercetin glucuronide	265, 355, 233sh	477	301, 433
33	Isoquercitrin	258, 355, 235sh	463	301
34	Reynoutrin	258, 356, 231sh	433	301
35	Guajaverin	257, 356, 231sh	433	301
36	Guavinoside A	218, 288	543	—
37	Avicularin	257, 355, 231sh	433	301
38	Quercitrin	264, 353	447	300
39	Guavinoside C	211, 265, 355	585	—
40	Guavinoside B	218, 283	571	—
41	Guavinoside A isomer	218, 288	543	—
42	Prodelphinidin B2 isomer 2	282, 340	609	423, 441, 305
43	Guavinoside B isomer	218, 283	571	—
44	Guavinoside B isomer	218, 283	571	—
45	Guavinoside B isomer	218, 283	571	—
46	Guavin B	208, 221, 283	693	—
47	Quercetin	232sh, 257, 374	301	151
48	Naringenin	280	271	—