A sustainable ingredient from partially depectinised citrus peels
Firstly, the partially depectinised citrus peels are pre-treated with a pulper to mechanically separate seeds and other impurities. This step is followed by plenty accurate wash-outs with water to enhance the colour and the functional properties of the fiber. In fact, during this stage, the cellulose’s capability to bind water gradually increases, while undesired substances are removed.
The semi-finished product is then combined with a citric acid solution to adjust the pH to the desired value. Furthermore, the fiber undergoes a washing treatment with alcohol to get rid of any alcohol soluble compounds which confer bitter notes, such as terpenes and waxes, as well as making the drying process faster and easier.
During the final step of the process, the fiber is dried and then milled to reach a uniform particle size.