Optimization of antioxidant, mechanical and chemical physical properties of chitosan-sorbitol-gallic acid films by response surface methodology

RASPO, MATÍAS A.; GOMEZ, CESAR G.; ANDREATTA, ALFONSINA E.

POLYMER TESTING

ELSEVIER SCI LTD

Año: 2018 vol. 70 p. 180 - 187

0142-9418

The interest in the development of biodegradable films is increasing, which is related to the wide availability ofresources and methods of synthesis to generate them. For this reason, in this study, the preparation of filmscontaining chitosan, sorbitol and gallic acid this study was proposed. The incorporation of natural antioxidantsinto films modifies their structure and provides new functionality to them.In order to determine the optimal content of sorbitol and gallic acid in the formulation of the chitosan films toobtain the highest antioxidant capacity and the best mechanical properties, an experimental design based on atwo-factor Doehlert model was used. The optimum condition of film synthesis was obtained when a mixture of1 wt chitosan, 3.62 wt% of sorbitol and 1 wt% of gallic acid was performed. The properties studied were experimentally evaluated at this optimal point and compared with the model predictions, showing good results. Itproved to be a promising material to be successfully used as packaging material.