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Open AccessArticle

Evaluation of New Antimicrobial Materials Incorporating Ethyl Lauroyl Arginate or Silver into Different Matrices, and Their Safety in Use as Potential Packaging

1
Department of Analytical Chemistry, Aragón Institute of Engineering Research I3A, EINA-University of Zaragoza, Torres Quevedo Building, María de Luna 3, 50018 Zaragoza, Spain
2
Nurel, R+D Department, Polígono Malpica, Ctra. Barcelona km. 329, 50016 Zaragoza, Spain
*
Author to whom correspondence should be addressed.
Academic Editors: Mercedes Ana Peltzer, Marina Patricia Arrieta Dillon, Freddys R. Beltrán González, Carol López de Dicastillo and Maria Jose Galotto
Polymers 2021, 13(3), 355; https://doi.org/10.3390/polym13030355
Received: 12 December 2020 / Revised: 14 January 2021 / Accepted: 19 January 2021 / Published: 22 January 2021
(This article belongs to the Special Issue Sustainable Plastics for Active/Intelligent Food Packaging)
A big challenge for today’s industry is antimicrobial preservation and the safety of food. An effective solution to this problem can be a modern invention such as antimicrobial packaging. In the presented research the antimicrobial activity of two new active films incorporating silver, as IONPURE IPL, and ethyl lauroyl arginate (LAE) were evaluated, by employing a low-density polyethylene (LDPE) matrix and a biofilm material, respectively. Additionally, LAE was also incorporated into polystyrene (PS) pads by two different methods: by spraying and by immersion of the PS pads into an aqueous LAE solution. LDPE films containing silver did not show any antimicrobial activity against Escherichia coli and Aspergillus flavus, whereas the biofilm containing LAE reduced the growth of Salmonella enterica but did not inhibit Aspergillus flavus. The active PS pads, both sprayed and immersed in LAE solution, also showed antimicrobial activity, causing a reduction of 99.99% of Pseudomonas putida growth. Thermal treatment at 180 °C for 6 and 15 min did not modify the antimicrobial activity of LAE against Salmonella enterica. Moreover, inductively coupled plasma-mass spectrometry (ICP-MS) analysis was performed to check the migration of silver from developed material intended for food packaging applications into food simulant. View Full-Text
Keywords: antimicrobial packaging materials; ethyl lauroyl arginate; silver; biopolymer; migration; PS; LDPE antimicrobial packaging materials; ethyl lauroyl arginate; silver; biopolymer; migration; PS; LDPE
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MDPI and ACS Style

Manso, S.; Wrona, M.; Salafranca, J.; Nerín, C.; Alfonso, M.J.; Caballero, M.Á. Evaluation of New Antimicrobial Materials Incorporating Ethyl Lauroyl Arginate or Silver into Different Matrices, and Their Safety in Use as Potential Packaging. Polymers 2021, 13, 355. https://doi.org/10.3390/polym13030355

AMA Style

Manso S, Wrona M, Salafranca J, Nerín C, Alfonso MJ, Caballero MÁ. Evaluation of New Antimicrobial Materials Incorporating Ethyl Lauroyl Arginate or Silver into Different Matrices, and Their Safety in Use as Potential Packaging. Polymers. 2021; 13(3):355. https://doi.org/10.3390/polym13030355

Chicago/Turabian Style

Manso, Sofía; Wrona, Magdalena; Salafranca, Jesús; Nerín, Cristina; Alfonso, María J.; Caballero, Miguel Á. 2021. "Evaluation of New Antimicrobial Materials Incorporating Ethyl Lauroyl Arginate or Silver into Different Matrices, and Their Safety in Use as Potential Packaging" Polymers 13, no. 3: 355. https://doi.org/10.3390/polym13030355

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