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Libro de Resúmenes XIII Simposio Argentino de Polímeros - SAP 2019 - STUDY OF THE INCORPORATION OF FUNGAL ANTIOXIDANTS INTO POLYLACTIC ACID FILMS FOR ACTIVE PACKAGING DEVELOPMENTS
Congreso
Fecha:
2019Editorial y Lugar de Edición:
Universidad Tecnológica NacionalResumen *
Continuous changes in life style have led to significant changes in consumer?s habits which demand for higher quality, longer shelf-life food products and less additives as possible. Then, these requirements carry with new regulations in the food supply chain and have led to a demand of more advanced packaging systems. In consequence, advanced polymeric systems with innovative functions are gaining considerable interest in the food packaging field. In this sense, one of the promising alternatives is the development of active packaging systems, which interact with the product and increase its shelf-life o by gradually releasing the active compound from the packaging to the food, avoiding the use of additives in food formulation (Arrieta & Peltzer, 2018).Oxidation is one of the major concerns affecting food quality. To avoid this problem, antioxidants are used as additives, to reduce lipid oxidation and protect food nutrients against oxidation (Arrieta et al., 2017, Fortunati et al, 2016), and thus extending the food product shelf-life. Antioxidant active packaging prevents oxidation by either absorbing components that contributes to oxidation, or by releasing antioxidants inside the packaging, in particular to the surface of the product where the oxidation process mainly produced. Food grade antioxidants should be employed to the formulation of these systems, because once they are released to the foodstuff they are recognized as food ingredients ( Arrieta & Peltzer, 2018). Natural antioxidants, from plants and herbs origin, are those mostly used for these purposes. Thymol, carvacrol, -tocopherol, ascorbic acid, green tea were used as antioxidant in different polymer matrices for active packaging developments (Kuli?ić et al., 2006, Ramos et al., 2014)Other antioxidants were also described in nature such as Naphtho-y-Pyrones (NGPs) which are secondary metabolites produced by the filamentous fungi Aspergillus tubingensis that demonstrated high antioxidant capacity (Choque et al., 2015).There is a growing tendency in the food industry to replace the petrochemical based polymer frequently used in this field for more sustainable alternatives. Therefore, the use of biobased polymers has gained considerable attention during the last two decades. Polylactic acid (PLA) is a biodegradable polyester coming from renewable resources, such as corn and sugar beets following fermentation of starch and condensation of lactic acid. PLA is the most extensively researched and utilized biodegradable and renewable thermoplastic polyester, with potential to replace conventional petrochemical-based polymers and was also tested as active systems (Jamshidian et al. 2013).One way to evaluate the efficacy of an active material could be the study of active substance releasing from the packaging material to food simulants under condition specified in regulations.The aim of this work was to evaluate the incorporation of NGPs as active compounds in films based on PLA and the study of the release of the antioxidant in food simulants, for the performance of new active packaging system. Información suministrada por el agente en SIGEVAPalabras Clave
POLYLACTIC ACID FUNGAL ANTIOXIDANTS MIGRATIONACTIVE PACKAGING