Formulation identifier | Time (month) | Size (nm) mean ± SD | PDI mean ± SD | ζ-potential (mV) mean ± SD |
---|---|---|---|---|
F2 | 0 | 277.50 ± 29.23 | 0.319 ± 0.11 | -31.23 ± 4.54 |
 | 1 | 286.88 ± 23.31 | 0.324 ± 0.14 | -29.22 ± 3.02 |
 | 2 | 297.15 ± 18.77 | 0.323 ± 0.17 | − 28.97 ± 5.45 |
 | 3 | 307.11 ± 31.72 | 0.326 ± 0.16 | -29.11 ± 6.72 |