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Table 1 Classification of 108 rhubarb components on the basis of fuzzy chemical identification

From: Fuzzy identification of bioactive components for different efficacies of rhubarb by the back propagation neural network association analysis of UPLC-Q-TOF/MSE and integrated effects

Category Confirmed component (No., RT) Remaining component attribution (RT)
Rh-01 Aloe-emodin (90, 17.70) 68 (12.58), 78 (14.51), 93 (18.13), 96 (18.46), 99 (19.27)
Rhein (95, 18.33)
Emodin (100, 19.99)
Chrysophanol (102, 21.24)
Physcion (105, 22.00)
Rh-02 Aloe-emodin 8-O-β-D-glucoside (30, 6.31) 10 (3.11), 22 (4.76), 28 (5.65), 36 (6.97), 49 (9.84), 52 (10.28), 55 (10.64), 64 (11.67), 80 (15.11), 83 (15.72), 86 (16.24), 89 (17.48), 92 (17.76), 97 (18.94)
Rhein 8-O-β-D-glucoside (32, 6.60)
Emodin 1-O-β-D-glucoside (58, 10.97)
Chrysophanol 1-O-β-D-glucoside (72, 13.50)
Emodin 8-O-β-D-glucoside (76, 13.90)
Chrysophanol 8-O-β-D-glucoside (77, 14.05)
Physcion 8-O-β-D-glucoside (85, 16.12)
Rh-03 Sennoside B (34, 6.82) 47 (9.57), 50 (9.96), 53 (10.38), 63 (11.41), 73 (13.52)
Sennoside A (46, 9.56)
Rh-04 Cianidanol (11, 3.24) 7 (2.75), 8 (2.83), 12 (3.29), 19 (4.25), 20 (4.45), 25 (5.13), 29 (6.19), 37 (7.11), 54 (10.48), 61 (11.29), 69 (12.79), 84 (16.06)
(-)-Epicatechin (18, 4.24)
(-)-Epicatechin gallate (31, 6.60)
Procyanidin B2 (14, 3.76)
Rh-05 Gallic acid (4, 1.38) 3 (1.19), 5 (1.84), 6 (2.12), 9 (3.00), 13 (3.40), 23 (4.76), 26 (5.18), 44 (8.83), 62 (11.34), 70 (13.09), 79 (14.66), 91 (17.74)
Rh-06 Resveratroloside (24, 4.86) 40 (7.79), 42 (8.01), 43 (8.28), 57 (10.82), 104 (21.72)
Rh-07 Torachrysone 8-O-glucoside (74, 13.55) 21 (4.52), 81 (15.44)
Rh-08 Raspberryketone glucoside (17, 4.10) 39 (7.68), 60 (11.16), 75 (13.73), 82 (15.60), 87 (16.61)
Lindleyin (33, 6.70)
4-(4-Hydroxyphenyl)-2-butanone (38, 7.41)
Rh-09 5-Acetyl-7-hydroxy-2-methyl-chromone (59, 11.06) 15 (3.82), 16 (3.90), 41 (7.99), 48 (9.68), 56 (10.66), 98 (19.09)
Rh-10 - 65 (11.72), 67 (12.10), 101 (21.08), 103 (21.31)
Others - 1 (0.81), 2 (0.94), 27 (5.35), 35 (6.96), 45 (9.31), 51 (10.12), 66 (11.90), 71 (13.25), 88 (17.26), 94 (18.15), 106 (22.28), 107 (23.23), 108 (23.77)
  1. Rh-01 ~ 10 represent free anthraquinones, combined anthraquinones, anthranones and their dimers, flavanols and their polymers, gallic acid and gallotannins, stilbene glycosides, naphthalene glycosides, butyrylbenzenes and their glycosides, chromones, and flavonoid (flavonol) glycosides in turn