Abél Guarda

Design of curcumin-activated antioxidant-barrier bilayer polymer systems incorporating post-industrial recycled polypropylene

Eliezer Velásquez, Carol López-de-Dicastillo, Cristina Nerín, Filomena Silva et autres

• Bilayer design enables at least 20% recycled PP integration. • 37% stiffness and 34% strength increase via structural design. • Non-release active material with 1% curcumin achieves 50% hydroxyl radical scavenging. • Coupled barrier-antioxidant functionality in scalable bilayers. The development of …

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Functionalization of recycled poly (lactic acid) (PLA) with β-cyclodextrin/allyl isothiocyanate inclusion complexes

Tannia Silva - P, Francisco Rodríguez-Mercado, Paulina Cheuquepan, Alejandra Torres et autres

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Enhanced Shelf Life of Chicken Fillets using an Active Pad Based on Alginate Hydrogel Containing a β-Cyclodextrin/Carvacrol Inclusion Complex

Tannia Silva, Francisco J. Rodríguez, Abél Guarda, María Jesús Saravia et autres

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Bio-Based Coatings on Cellulosic Materials Resistant to Humidity and Fats

Bastián Rozas, Julio E. Bruna, Abél Guarda, María José Galotto et autres

Cellulose stands out as a promising alternative to conventional polymers in food packaging due to its abundance, renewability, biodegradability and structural robustness. Despite these advantages, its natural low resistance to water and fats limits its direct application, necessitating the use of protective …

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Influence of the Molar Mass and Concentration of the Polyvinylpyrrolidone on the Physical–Mechanical Properties of Polylactic Acid for Food Packaging

Iván Restrepo, Eliezer Velásquez, María José Galotto, Abél Guarda

Improving the end-of-life performance of polylactic acid (PLA) for food packaging requires strategies that enhance biodegradability, solubility, and dispersibility without compromising essential material properties. PLA-based films were produced by melt extrusion using polyvinylpyrrolidone (PVP) as a hydrophilic modifier, aiming to enhance the …

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Characterization of Simulated Postconsumer Recycled Poly (Lactic Acid) ( PLA ): Evaluation of Reprocessing Cycles on Its Physicochemical Properties

Tannia Silva, Francisco J. Rodríguez, Julio E. Bruna, Alejandra Rodriguez Torres et autres

ABSTRACT This study aims to investigate the behavior of poly (lactic acid) (PLA) by simulating its post‐consumption use and mechanical recycling through multiple extrusion processes. Due to PLA being used in the production of packaging materials for beverages such as water and …

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Development of an antimicrobial material made of graphene oxide, polylactic acid/polyhydroxybutyrate, and CuO nanoparticles and its reprocessing effect on its properties

Sergio Quilaqueo, Julio E. Bruna, María José Galotto, Abél Guarda et autres

Abstract In the present study nanocomposites made of polylactic acid (PLA), polyhydroxybutyrate (PHB), graphene oxide (GO), and copper (II) oxide (CuO) nanoparticles on three compositions (1, 3 and 5 wt%), obtained through melt extrusion were developed. Properties of the nanocomposites obtained in …

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Improving the Oxidative Stability of Sunflower Oil through Supercritical Impregnation-Assisted PLA/Cinnamaldehyde Active Packaging

Carolina Villegas, Emma Talón, Amparo Chiralt, Alejandra Rodriguez Torres et autres

In the present study, the supercritical impregnation process using carbon dioxide (scCO 2 ) was applied to incorporate the active compound cinnamaldehyde into PLA films, aiming to develop an innovative active food packaging solution. This approach leverages the unique properties of scCO …

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Thymol: Use in Antimicrobial Packaging

Carol López de Dicastillo, A. Torres, Raquel Heras-Mozos, Abél Guarda et autres

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Release and Disintegration Properties of Poly(lactic Acid) Films with Allyl Isothiocyanate-β-Cyclodextrin Inclusion Complexes for Active Food Packaging

Cristina Muñoz‐Shugulí, Francisco J. Rodríguez, Abél Guarda, María José Galotto et autres

This study aimed to enhance the properties and compostability of active poly(lactic acid) (PLA) films by incorporating β-cyclodextrin (β-CD) inclusion complexes with allyl isothiocyanate (AITC). Films were prepared using melt extrusion and characterized based on their structural, chemical, morphological, thermal, and barrier …

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Release and Disintegration Properties of Poly(lactic Acid) Films with Allyl Isothiocyanate-β-Cyclodextrin Inclusion Complexes for Active Food Packaging

Cristina Muñoz‐Shugulí, Francisco J. Rodríguez, Abél Guarda, María José Galotto et autres

This study aimed to enhance the properties and compostability of active poly(lactic acid) (PLA) films by incorporating β-cyclodextrin (β-CD) inclusion complexes with allyl isothiocyanate (AITC). Films were prepared via melt extrusion and characterized by their structural, chemical, morphological, thermal and barrier properties. …

Poly(lactic acid) and copper‐modified montmorillonite nanocomposite films for antimicrobial food packaging

Julio E. Bruna, Cristina Muñoz‐Shugulí, L. Carolina Espinoza, Andrea Herrera et autres

Abstract Polymer‐based nanocomposites loaded with metal nanoparticles are an interesting alternative for the development of antimicrobial food packaging. However, affinity and dispersion of metal nanoparticles could be improved using nanoclays. Therefore, nanocomposite films based on poly(lactic acid) (PLA) and copper modified‐montmorillonite were …

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