Research Article

HPLC/MS-MS Identification of Oak Quercus aegilops Root Tannins

Table 2

Selected group of gallotannins and ellagitannins screened by enhanced MS using the LIT.

Parent Q1 (m/z)CompoundDaughter Q3

933.4Trigalloyl-gallagoyl-glucose783.2, 631, 481.1, 301.1
933.2Trigalloyl-HHDP-glucose631, 569.1, 467.2, 301.2
933.1Pentagalloyl-glucose631.1, 569.2, 425.1, 301.2
783.4Tetragalloyl-glucose764.1, 746, 481, 301.1
783.2Tetragalloyl-glucose763.1, 481, 301
933.4Triagalloyl-glucose613.1, 481, 301.1
783.6Tetragalloyl-glucose764.4, 651.1, 481, 301.1
933.1Triagalloyl-glucose613.1, 481, 301.1
783Tetragalloyl-glucose764.0, 746, 481, 301.1
613.5Dehydrated tergallic-C-glucoside595.5, 523.6, 493.2, 301.1
613.7Dehydrated tergallic-C-glucoside493.1
933.2Trigalloyl-glucose614.1, 467.7, 301.1
631.4Tergallic-O-glucoside628.1, 451.1, 301.1
469.4Valoneic acid dilactone425.1, 300.9
469.0Valoneic acid dilactone425.9, 300.9
469.2Valoneic acid dilactone424.9, 300.9
595.5Identify unknown463.3, 301
927.4Valoneic acid dimer463.3, 301
933.3Trigalloyl-HHDP-glucose756.6, 463.2, 301.1
867.6Ellagic acid pentoside dimer433, 301
850.0Identify unknown821.1, 804.4, 677.7, 451.5, 301.1