Materials and methods
2.1. Materials
Potatoes (variety Panda) and vegetable oil (Chef, Coprona, Chile) were the raw materials. Potato tubers were stored in a dark room at 8 1C. Slices (thickness of 2.5 mm) were cut from the pith of the parenchymatous region of potato tubers using an electric slicing machine (Berkel, model EAS65). A circular cutting mold was used to provide chips with a diameter of 37 mm.