Table 2.
Apparent permeability of phenolic compounds from selected berries.1,2.
| Parameter | Red Globe Grape | Raspberry | Blackberry |
|---|---|---|---|
| At0 (TPFC) | 2 ± 0.0 c | 3.6 ± 0.1 b | 4.2 ± 0.1 a |
| At120 | 1.3 ± 0.3 b | 1.5 ± 0.1 b | 2.4 ± 0.1 a |
| Bt120 | 0.10 ± 0.0 b | 0.09 ± 0.0 b | 0.13 ± 0.0 a |
| Absorptive Papp (At120→Bt120) | 1.20 | 0.06 | 0.07 |
| Secretory Papp (Bt120→At120) | 1.55 | 0.98 | 1.38 |
| Efflux ratio (B→A)*(A→B)−1 | 1.29 | 16.12 | 19.12 |
| Uptake ratio (A→B)*(B→A)−1 | 0.78 | 0.06 | 0.05 |
| p (ER vs. UR) | 0.02 | 0.002 | <0.0001 |
1 Results are expressed as mean ± standard deviation (n ≥ 9; mg GAE /g dry weight; Folin-Ciocalteu method), different superscript letters within a same row means statistical differences (p < 0.05). 2 Total polyphenol content by the Folin-Ciocalteu method (TPFC), basal (t0) and final (t120) apical (A) or basolateral (B) concentration. Apparent permeability coefficient (Papp; cm*s-1 x 10-5). Statistical difference between efflux (ER) vs. uptake (UR) ratios as determined by t-student test (p < 0.05).