2. Materials and methods
2.1. Materials
Freshand maturepricklypear fruits of OFI werecollected from an experimental plantation in the vicinity of Marrakech (Morocco). The fruits were carefully hand-peeled, and the peels (with a thickness of about 3–4 mm) were cut into small pieces and dried in a ventilated oven adjusted to 50 C. After drying, the peel fragments were ground for a few minutes in a domestic coffee grinder and sieved.