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Table 1 Spectral data of the 16 flavonoids identified from Korean S. baicalensis G. using HPLC-MS/MS

From: Proteome profiling of lipopolysaccharide induced L6 rat skeletal muscle cells response to flavonoids from Scutellaria baicalensis Georgi

No Compound Rt (min) [M-H]-/[M + H]+ MS/MS aQuantity (mg/kg)
1 Pentahydroxyflavanone derivative 20.64 629 303 285 275 217 201 177 149 125 212.543 ± 1.074
2 Pentahydroxyflavanone 23.49 303 303 285 275 259 217 193 177 149 125 109 16.670 ± 0.188
3 Viscidulin I –O– diglucoside 25.98 625 301 283 273 258 229 185 151 125 21.220 ± 0.440
4. Pentahydroxyflavone 29.31 301 301 283 269 259 240 191 179 161 139 124 121 109 17.657 ± 0.204
5 N.I 34.65 647(+) 647 501 467 347 321 303 285 -
6 Viscidulin III –O– glucoside 35.22 507 345 330 315 -
7 Tetrahydroxyflavone 37.69 285 285 268 241 217 199 177 151 133 107 43.056 ± 0.112
8 Iridin 40.20 521 383 359 344 329 313 300 285 212 21.472 ± 0.415
9 Eriodictyol (4′-hydroxynaringenin) 42.25 289(+) 289 271 247 179 163 153 147 45.679 ± 0.782
10 Puerarin 43.24 415 415 295 267 253 223 7.003 ± 0.022
11 Viscidulin III 43.88 347(+) 347 332 317 314 289 286 183 169 150 142 -
12 Pentahydroxyflavone 45.11 301 301 283 269 241 225 197 179 165 161 139 133 124 107 20.622 ± 0.036
13 N.I 52.55 675 675 529 481 361 335 317 285 -
14 Baicalin 53.67 447(+) 447 343 271 253 225 169 149 123105 3.035 ± 0.013
15 Scutellarein 56.25 285 285 267 257 239 213 195 185 167 165 137 119 117 21.017 ± 0.133
16 Isoscutellarein 57.35 285 285 267 257 241 239 229 213 185 167 165 137 119 117 7.882 ± 0.009
  1. aQuantity data are the mean ± SD of three replicates determinations by HPLC-UV method.
  2. N.I: Not Identified.
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