Table 4.
Stability testing of nanoparticles with defferent treatments (presented as the remaining absorbance in each fraction with time of exposure)
| Treatment time | In a refrigerator (4 °C) |
At room temperature |
Exposure time | UV light |
Treatment time | In a air dry oven(50℃) |
||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nanoparticles | α-TOC (control) | Nanoparticles | α-TOC (control) | Nanoparticles | α-TOC (control) | Nanoparticles | α-TOC (control) | |||
| 0d | 0.914 ± 0.009 aA | 0.528 ± 0.020 aD | 0.910 ± 0.005 aA | 0.528 ± 0.020 aD | 0 min | 0.863 ± 0.009 aB | 0.795 ± 0.005 aC | 0 h | 0.864 ± 0.008 aB | 0.773 ± 0.018 aC |
| 1d | 0.819 ± 0.030 bB | 0.45933 ± 0.011bE | 0.866 ± 0.009 bA | 0.433 ± 0.029 bE | 30 min | 0.819 ± 0.011 abB | 0.732 ± 0.015 aC | 1 h | 0.732 ± 0.027 bC | 0.578 ± 0.035 bD |
| 2d | 0.761 ± 0.020 cA | 0.387 ± 0.016cD | 0.786 ± 0.018 cA | 0.389 ± 0.012cD | 60 min | 0.800 ± 0.003 bA | 0.619 ± 0.028 bB | 2 h | 0.617 ± 0.047 cB | 0.467 ± 0.041 cC |
| 3d | 0.685 ± 0.022 dA | 0.321 ± 0.023 dCD | 0.691 ± 0.020 dA | 0.298 ± 0.014 dD | 90 min | 0.700 ± 0.012 cA | 0.519 ± 0.032 cB | 3 h | 0.498 ± 0.014 dB | 0.351 ± 0.034 dC |
| 4d | 0.589 ± 0.017 eA | 0.243 ± 0.011 eC | 0.594 ± 0.024 eA | 0.233 ± 0.013 eC | 120 min | 0.546 ± 0.067 dA | 0.418 ± 0.005 cB | 4 h | 0.432 ± 0.019 eB | 0.249 ± 0.035 eC |
| 5d | 0.495 ± 0.008 fA | 0.195 ± 0.009 fE | 0.504 ± 0.009 fA | 0.188 ± 0.007 fE | 150 min | 0.410 ± 0.012 eB | 0.299 ± 0.020 eD | 5 h | 0.336 ± 0.034 fC | 0.205 ± 0.008 efE |
| 6d | 0.398 ± 0.020 gA | 0.167 ± 0.013 fDE | 0.388 ± 0.013 gAB | 0.101 ± 0.020 gE | 180 min | 0.3197 ± 0.007 fBC | 0.320 ± 0.092 eC | 6 h | 0.208 ± 0.006 gD | 0.183 ± 0.006 fD |
Each value is expressed as mean ± standard deviation. The values not statistically different are accompanied by the same letter and the values statistically different with another letter as compared to control (Small letter represent intra-group, capital letter represent inter-group).