Table 3.
Overview of pH, osmolality, and buffer capacity of the investigated extracts with and without the addition of a buffer system, as well as UWS without any additions [14].
| Plant Extract | Without K2HPO4 | With 0.02 M K2HPO4 | |||
|---|---|---|---|---|---|
| pH | Osmolality [osmol/kg] |
pH | Osmolality [osmol/kg] |
Buffer Capacity [mmol H+/L] |
|
| Calendula | 4.26 * ± 0.08 | - (#) | 7.02 ± 0.09 | - (#) | 7.90 * ± 0.82 |
| Fucus | 4.62 * ± 0.06 | 0.007 * ± 0.004 | 7.41 ± 0.09 | 0.053 ± 0.006 | 8.41 * ± 0.31 |
| Lichenan | 6.74 ± 0.09 | 0.001 * ± 0.001 | 8.91 * ± 0.08 | 0.052 ± 0.006 | 5.50 ± 0.22 |
| UWS [14] | 6.80 ± 0.17 | 0.052 ± 0.003 | - | - | 5.34 ± 1.70 (##) |
(#) Not possible to determine via freezing-point depression. (##) Measured without the addition of K2HPO4. * Indicates significant differences from natural UWS.