Table 5.

The chemical composition identified in A. villosum extracts based on the UPLC-ESI-QTOF-MS/MS analysis.

No.	Name	Rt(min)	Molecular	Ion	Measured (m/z)	MS2 ion fragment
1	Malic acid	1.335	C4H6O5	[M-H]−	133.0151	115, 71
2	Citric acid	2.262	C6H8O7	[M-H]−	191.0208	111, 87
3	Protocatechuic acid	6.655	C7H6O4	[M-H]−	153.0198	109, 91
4	Gallic acid	6.676	C7H6O5	[M-H]−	169.0144	151, 125, 107, 83
5	Vanillic acid hexoside isomer	7.609	C14H18O9	[M-H]−	329.0898	269, 209, 167, 123
6	4-hydroxybenzoic acid	8.384	C7H6O3	[M-H]−	137.0253	93, 65
7	Protocatechualdehyde	8.408	C7H6O3	[M-H]−	137.0250	119, 108, 91
8	Procyanidin B isomer	9.025	C30H26O12	[M-H]−	577.1422	425, 407, 289, 245
9	Catechin hexoside isomer	9.530	C21H24O11	[M-H]−	451.1250	361, 331, 289, 245
10	(+/−) Catechin	9.681	C15H14O6	[M-H]−	289.0745	245, 203, 151, 123, 109
11	Vanillic acid hexoside isomer	9.941	C14H18O9	[M-H]−	329.0898	269, 209, 167, 123
12	Catechin hexoside isomer	10.033	C21H24O11	[M-H]−	451.1250	361, 331, 289, 245
13	Vanillic acid	10.091	C8H8O4	[M-H]−	167.0348	152, 123, 108, 91
14	Procyanidin C isomer	10.271	C45H38O18	[M-H]−	865.2126	695, 577, 425, 407, 289
15	Caffeic acid	10.343	C9H8O4	[M-H]−	179.0356	135, 117, 107
16	Procyanidin B isomer	10.483	C30H26O12	[M-H]−	577.1402	425, 407, 289, 245
17	Procyanidin D	10.523	C60H50O24	[M-H]−	1153.2767	865, 575, 407, 287
18	Syringic acid	10.821	C9H10O5	[M-H]−	197.0458	182, 167, 153, 123, 95
19	Epicatechin	11.098	C15H14O6	[M-H]−	289.0745	245, 203, 151, 123, 109
20	Procyanidin C isomer	11.544	C45H38O18	[M-H]−	865.2103	695, 577, 425, 407, 289
21	Catechin pentoside	11.559	C21H23O10	[M-H]−	435.1315	361, 331, 289, 245, 151
22	p-coumaric acid	12.095	C9H8O3	[M-H]−	163.0403	119, 93
23	Procyanidin A	12.589	C30H24O12	[M-H]−	575.1252	449, 289, 285, 245
24	Rutin	12.908	C27H30O16	[M-H]−	609.1489	301, 271, 255, 179, 151
25	Ferulic acid	12.92	C10H10O4	[M-H]−	193.0516	178, 149, 133, 121
26	Procyanidin B isomer	13.073	C30H26O12	[M-H]−	577.1405	425, 407, 289, 245
27	Isoqercitrin	13.107	C21H20O12	[M-H]−	463.0903	301, 271, 243, 151
28	Hyperoside	13.244	C21H20O12	[M-H]−	463.0903	301, 271, 255, 243, 151
29	Quercitrin	14.106	C21H20O11	[M-H]−	447.0974	301, 271, 255, 243, 151
30	Syringaldehyde	14.674	C9H10O4	[M-H]−	181.0510	166, 151, 123
31	Catechin glucuronide	16.193	C22H26O11	[M-H]−	465.1242	421, 341, 289
32	Quercetin	16.394	C15H10O7	[M-H]−	301.0380	273, 245, 179, 151, 121
33	Isorhamnetin	18.419	C16H12O7	[M-H]−	315.0539	271, 227, 163, 151, 107
34	9-Hydroxy-10,12,15-octadecatrienoic acid	25.47	C18H30O3	[M-H]−	293.2129	275, 183, 171
35	9-Hydroxy-10,12-octadecatrienoic acid	26.064	C18H32O3	[M-H]−	295.2298	277, 195, 171