Table 1 Characterization of chemical constituents of the processed HSW samples

1

8.20

C₇H₆O₅

168.8[M-H]⁻

124.8 [M-H-CO₂]⁻,

Gallic acid

270

2

13.262

Unknown

323.1 [M-H]⁻

–

Unknown

285

3

14.134

C₇H₆O₄

152.8 [M-H]⁻

108.8 [M-H-CO₂]⁻

Protocatechuic acid

260, 293

4

18.582

Unknown

185.8 [M-H]⁻

141.8 [M-H-CO₂]⁻

Unknown

218, 279

5

21.664

C₁₅H₁₄O₆

289.0 [M-H]⁻

244.8 [M-H-CO₂]⁻

Catechin

278

6

26.645

C₁₅H₁₄O₆

289.0 [M-H]⁻

244.9 [M-H-CO₂]⁻

Epicatechin

219, 282

7

29.50

C₂₆H₃₂O₁₄

567.1 [M-H]⁻

613.2 [M-H + HCOO]⁻,

405, 242.9

2, 3, 5, 4′-tetrahydroxystilbene-2-O-(6′′-O-α-d-glucopyranosyl)-β-D-glucopyranosyl)

320

8

30.28

C₂₀H₂₂O₉

405.1 [M-H]⁻,

441 [M-H + Cl]⁻, 242.8[M-H-glu] ⁻

Cis-2, 3, 5, 4′-tetrahydroxy-stilbene-2-O-β-d-glucoside

283

9

37.17

C₂₀H₂₂O₉

405.1 [M-H]⁻,

441 [M-H + Cl]⁻, 242.8[M-H-glu] ⁻

Trans-2, 3, 5, 4′-tetrahydroxy-stilbene-2-O-β-d-glucoside

213, 322

10

38.112

C₂₂H₁₈O₁₀

441.1 [M-H]⁻

288.9, 330.9

Unknown

273

11

38.538

C₂₇H₂₆O₁₃

557.2 [M-H]⁻

312.9

2, 3, 5, 4′-tetrahydroxy-stilbene-2-O-β-d-(2″- galloyl)-glucoside

214, 293

12

49.58

C₂₀H₂₄O₉

407.1 [M-H]⁻

244.9 [M-H-glu]⁻

torachrysone-8-O-glucoside

324

13

50.74

C₂₁H₂₀O₁₀

431.1 [M-H]⁻

268.9 [M-H-glu]⁻

Emodin-8-O-β-d-glucoside

222, 282,422

14

55.64

C₂₂H₂₂O₁₀

283 [M-H-glu]⁻

444.9 [M-H]⁻,

239.9 [M-CH₃-CO]⁻, 240.9

Physcion-8-O-β-d-glucoside

222, 271,422

15

69.80

Unknown

283

239.8

Unknown

224, 285,434

16

79.79

C₁₅H₁₀O₅

268.9 [M-H]⁻

224.8 [M-H-CO₂]⁻

Emodin

287, 439

17

9.0

Unknown

–

–

–

18

33.09

Unknown

–

–

–