Table 2.
Estimation of the flavonoid content in dried Mexican oreganoa
| Compound | Sample-1 (mg/g) | Sample-2 (mg/g) | Sample-3 (mg/g) |
|---|---|---|---|
| Pentahydroxyfavanone-A hexoside (II-6-A)b | 9.37±0.13 | 8.59±0.30 | 9.31±0.09 |
| Pentahydroxyfavanone-B hexoside-1 (II-7-A)b | 2.15±0.05 | 2.02±0.03 | 2.10±0.05 |
| Pentahydroxyfavanone-B hexoside-2 (II-7-B)b | 2.28±0.06 | 2.19±0.02 | 2.33±0.04 |
| Taxifolin (II-5) | 0.98±0.01 | 1.49±0.02 | 1.38±0.04 |
| Eriodictyol (II-4) | 0.72±0.02 | 0.91±0.02 | 0.93±0.02 |
| Naringenin (II-2) | 3.35±0.03 | 4.18±0.01 | 3.63±0.03 |
| Sakuranetin (II-3) | 0.90±0.02 | 0.98±0.01 | 0.91±0.02 |
| Pinocembrin (II-1) | 9.16±0.05 | 5.29±0.03 | 0.53±0.01 |
| Total flavanones | 31.05±0.17 | 25.67±0.43 | 21.12±0.13 |
| 6-Hydroxyluteolin 7-O-hexoside (I-8-A)c | 9.37±0.13 | 10.04±0.08 | 11.65±0.12 |
| 6-Hydroxyluteolin 7-O-rhamnoside (I-8-B)c | 0.23±0.01 | 0.76±0.02 | 0.44±0.02 |
| Scutallarein 7-O-hexoside (I-3-A)c | 2.69±0.02 | 3.10±0.02 | 3.58±0.03 |
| Luteolin 7-O-glucoside (I-6-A) | 2.56±0.08 | 3.09±0.02 | 3.28±0.04 |
| Apigenin 7-O-glucoside (I-2-A) | 0.25±0.01 | 0.29±0.01 | 0.31±0.01 |
| 6-Hydroxyluteolind | 0.74±0.01 | 0.99±0.02 | 1.00±0.02 |
| Scutallarein (I-3) | 0.29±0.01 | 0.24±0.01 | 0.48±0.01 |
| 6-Methoylscutallarein (I-4)e | 0.81±0.01 | 1.09±0.01 | 1.12±0.01 |
| 6,7-Dimethoylscutallarein (I-5)e | 0.45±0.01 | 0.66±0.01 | 0.76±0.02 |
| Luteolin (I-6) | 0.51±0.01 | 0.62±0.01 | 0.56±0.01 |
| Total flavones | 17.89±0.15 | 19.93±0.09 | 23.19±0.14 |
| Galangin (I-1) | 3.47±0.02 | 1.97±0.01 | 0.20±0.01 |
| Methylgalangin (I-1)f | 0.69±0.01 | 0.51±0.01 | ndg |
| Quercetin (I-7) | 0.34±0.01 | 0.47±0.01 | 0.45±0.01 |
| Total flavonols | 4.50±0.03 | 2.95±0.02 | 0.65±0.01 |
| 6-Hydroxyphloretin 6″-O-hexoside (III-2-A)h | 4.84±0.04 | 3.95±0.03 | 4.48±0.05 |
| Phloridzin (III-1-A) | 1.43±0.02 | 1.48±0.01 | 1.17±0.02 |
| Total dihydrochalcones | 6.27±0.05 | 5.43±0.03 | 5.63±0.06 |
| Total flavonoids | 59.83±0.24 | 53.98±0.44 | 50.60±0.20 |
a
Average (mean) content±SD of triplicate.
b
Calculated as molar equivalent of eriodictyol-7-O-glucoside.
c
Calculated as molar equivalent of luteolin-7-O-glucoside.
d
Calculated as molar equivalent of luteolin.
e
Calculated as molar equivalent of scutellarein.
f
Calculated as molar equivalent of galangin.
g
nd: below the detection limitation of 0.01 mg/g.
h
Calculated as molar equivalent of phloridzin.