Table 1. Chemical Composition and ζ-Potential of Fresh Samples (ACP and NanoZn) and the Samples Stored for 2 Years (NanoZn(St))a.
| sample | Ca (wt %) | P (wt %) | Zn (wt %) | (Ca + Zn)/P (molar ratio) | ζ (mV) |
|---|---|---|---|---|---|
| ACP | 25.2 ± 0.6 | 12.3 ± 0.3 | 1.58 ± 0.01 | –13.3 ± 2.7 | |
| NanoZn | 20.3 ± 0.1*** | 14.8 ± 0.2*** | 13.4 ± 0.1*** | 1.49 ± 0.02*** | –19.6. ± 1.7* |
| NanoZn(St) | 20.3 ± 0.2 | 13.9 ± 0.1** | 12.1 ± 0.1*** | 1.54 ± 0.01* | –18.2 ± 0.2 |
a
Data are expressed as mean ± standard deviation (n = 3). Statistical analysis using the one-way ANOVA test and Bonferroni’s post hoc test were used to compare ACP and nanoZn composition. NanoZn(St) composition after storage was also compared with respect to the fresh nanoZn sample. When p-values are lower than 0.05, differences in the obtained numerical results were considered statistically significant: *(p-value < 0.05), **(p-value < 0.01), or ***(p-value < 0.001).