Propiedades de conservación: recubrimiento a base de quitosano y Aloe vera aplicado en papa criolla (Solanum phureja)

In this work, some films were developed starting from different mixtures of chitosan and Aloe vera (80:20, 70:30 and 60:40) in order to evaluate the properties related to the superficial tension of the layer and thickness. The ratio 80:20 presented a homogeneous appearance for which the native potato was used (Solanum phureja) as a coating. This was applied by the dipping and subsequent drying of the tuber, varying the temperature from 40 °C to 70 °C with constant relative humidity (80% R.H.) for 48 h. CIELab colorimetric parameters, weight loss and total carotenoids for each treatment were determined. Treatments were arranged in a simple randomized design for 24 h. It is worth mentioning that for the kinetic study variables were found in the zero order, that is, the change of properties depends exclusively on the time. Coating application based on chitosan and Aloe vera in native potato allowed it to conserve the total carotenoid content by 70% compared to uncoated samples.