Effect of Different Porous Size of Porous Inorganic Fillers on the Encapsulation of Rosemary Essential Oil for PLA-Based Active Packaging

Overview

Journal Polymers (Basel)

Publisher MDPI

Date 2024 Sep 28

PMID 39339096

Authors

Raul Cerda-Gandia

Angel Aguero

Marina Patricia Arrieta

Octavio Fenollar

Affiliations

Soon will be listed here.

Abstract

Essential oils are interesting active additives for packaging manufacturing as they can provide the final material with active functionalities. However, they are frequently volatile compounds and can be degraded during plastic processing. In this work (RO) essential oil was encapsulated into Diatomaceous earth (DE) microparticles and into Halloysite nanotubes (HNTs) and further used to produce eco-friendly active packaging based on polylactic acid (PLA). PLA-based composites and nanocoposites films based on PLA reinforced with DE + RO and HNTs + RO, respectively, were developed by melt extrusion followed by cast-film, simulating the industrial processing conditions. As these materials are intended as active food packaging films, the obtained materials were fully characterized in terms of their mechanical, thermal and structural properties, while migration of antioxidant RO was also assessed as well as the compostability at laboratory scale level. Both DE and HNTs were able to protect the (RO) from thermal degradation during processing, allowing to obtain films with antioxidant properties as demonstrated by the antioxidant assays after the materials were exposed for 10 days to a fatty food simulant. The results showed that incorporating encapsulated in either DE or HNTs and the good dispersion of such particles into the PLA matrix strengthened its mechanical performance and sped up the disintegration under composting conditions of PLA, while allowing to obtain films with antioxidant properties of interest as antioxidant active food packaging materials.

Citing Articles

Comparative Study of Crucial Properties of Packaging Based on Polylactide and Selected Essential Oils.

Olewnik-Kruszkowska E, Vishwakarma A, Wrona M, Bertella A, Rudawska A, Gierszewska M Foods. 2025; 14(2).

PMID: 39856870 PMC: 11764739. DOI: 10.3390/foods14020204.

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