The aim of this study was to evaluate the protective effect of biodegradable packages made with chickpea flour on the oxidation of sunflower oil. Chickpea flour films were prepared using the casting technique. To study the influence of storage time on films properties, the chickpea flour films were stored during 60 days at 25 °C and 52% relative humidity. In addition, sunflower oil samples were packaged in chickpea flour packages (CPs) and stored for 60 days at 25 °C. Lipid oxidation indicators were evaluated. The results showed that puncture force and redness values (a*) of chickpea films did not change significantly during storage. Tensile strength, Young's modulus (YM), and yellowness (b*) increased and moisture content (MC), elongation (%E), solubility (%S), water vapor permeability (WVP), and luminosity (L*) decreased. Microscopic images showed the presence of a few cracks in the film network at storage day 60. Conjugated dienes and peroxide value increased less for sunflower oil stored in high-barrier plastic pouches and CPs during storage than the control treatment. CPs helped to preserve the chemical quality of sunflower oil samples, proving to be a promising alternative to develop biodegradable packaging to be used in oily food preservation. PRACTICAL APPLICATION: Discarded chickpea grains are those split and different color grains that are separated from marketable grains, and represent an industrial byproduct. These grains are currently used for feed, constituting a nutritive biomass of low commercial value. Chickpea flour is a potential material for making biodegradable films. This strategy allows adding value to the chickpea industry, transforming a byproduct into a raw material with the potential to develop economical food packaging material. The use of chickpea packages to preserve sunflower oil may be an alternative to pack vegetable oil or high lipid content food, allowing the use reduction of nonbiodegradable pouches.
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