*2.10. Solubility*

The yield of soluble material in the pomace was determined, using the supernatant from WRC analysis. The supernatant, after decantation, was dried at 105 ◦C to a constant weight. The solubility was calculated by the following equation:

$$\text{Solubility} \left( \% \right) = \left( \text{M/M0} \right) \times 100 \tag{5}$$

where M is the weight of dried soluble material (g); M0 is the weight of the dry pomace used for analysis (g).
