Table 2.
Characterization of in vitro deposition of formulations by TSI.
| Formulation number | D[0.9] [μm]a | Entrapment efficiency [%]a |
Recovered dose [μg]a |
Fine particle dose [μg]a |
Respirable fraction [μg]a |
|---|---|---|---|---|---|
| F1 | 1.761 ± 0.05 | 80.68 ± 2.68 | 123.80 ± 0.04 | 52.15 ± 0.02 | 42.12 ± 0.02 |
| F2 | 1.192 ± 0.03 | 86.43 ± 1.15 | 116.28 ± 0.02 | 48.84 ± 0.01 | 42.00 ± 0.03 |
| F3 | 2.147 ± 0.03 | 90.92 ± 2.21 | 112.15 ± 0.03 | 44.87 ± 0.04 | 40.00 ± 0.01 |
| F4 | 3.204 ± 0.01 | 85.94 ± 2.12 | 110.6 ± 0.06 | 44.24 ± 0.06 | 40.00 ± 0.05 |
| F5 | 1.926 ± 0.03 | 86.66 ± 1.25 | 130.28 ± 0.04 | 51.81 ± 0.03 | 39.76 ± 0.02 |
| F6 | 3.424 ± 0.04 | 92.64 ± 2.12 | 129.41 ± 0.03 | 47.51 ± 0.02 | 36.71 ± 0.04 |
| F7 | 1.937 ± 0.06 | 87.16 ± 1.11 | 139.41 ± 0.03 | 60.09 ± 0.01 | 43.10 ± 0.02 |
| F8 | 1.537 ± 0.08 | 91.39 ± 1.98 | 97.86 ± 0.01 | 29.75 ± 0.02 | 30.40 ± 0.03 |
| F9 | 3.218 ± 0.09 | 92.20 ± 2.25 | 66.06 ± 0.04 | 30.03 ± 0.03 | 37.50 ± 0.01 |
| Commercial DPI | — | — | 48.31 ± 0.03 | 10.82 ± 0.03 | 22.39 ± 0.05 |
(+1) = higher values and (−1) = lower values.
aAll the determinations performed in triplicate and values are expressed as mean (values = average ± SD).