Clara M. Pereyra

A comparative study of mango leaf extract incorporation in poly(butylene succinate) films via supercritical solvent impregnation and melt-mixing blending

Ludisbel León-Marcos, Antonio Montes, Diego Valor, Ignacio García-Casas et autres

This study evaluates the incorporation of mango leaf extract (MLE) into poly(butylene succinate) (PBS) polymer plasticized with epoxidized linseed oil (ELO) using melt-mixing blending (MMB) and supercritical solvent impregnation (SSI). PBS films were prepared with different ELO concentrations, and a comparative evaluation …

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Hydrothermal Treatment to Enhance Supercritical CO2 Polycaprolactone Foaming Processes for Tissue Engineering Scaffolds

Belén García-Jarana, Diego Valor, Ignacio García-Casas, Jezabel Sánchez‐Oneto et autres

Hydrothermal treatment was investigated as a strategy to enhance the supercritical CO2 foaming process for the fabrication of polycaprolactone (PCL) scaffolds intended for tissue engineering applications. PCL samples were subjected to supercritical foaming at 300 bar and 40 °C for 60 min, …

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Supercritical CO2-Processed Polymeric Foams for Process Intensification Structure, Functionality, and Advanced Applications

Ignacio García-Casas, Antonio Montes, Ludisbel León-Marcos, Clara M. Pereyra et autres

Polymeric materials foamed using supercritical carbon dioxide (scCO2) offer a sustainable and versatile basis for developing advanced porous structures with highly adjustable morphology, density, and functionality. This chapter provides a comprehensive overview of the physical principles and processing strategies involved in generating …

Pore Formation in Biodegradable Polymers via Supercritical CO2 Foaming: Mechanisms, Characterization, and Applications

Ignacio García-Casas, Diego Valor, Ludisbel León-Marcos, Antonio Montes et autres

The development of porous biodegradable polymers via supercritical CO2 foaming represents a promising approach towards sustainable materials engineering. This chapter explores the physical and chemical mechanisms behind pore formation in such systems, focusing on gas-polymer interactions, nucleation dynamics, and pore growth during …

Development and characterization of Polylactic acid-Polyhydroxybutyrate (PLA-PHB) blend impregnated with mango extracts for use as active film

Ludisbel León-Marcos, Antonio Montes, Diego Valor, Ignacio García-Casas et autres

The study examined the impregnation of Polylactic acid-Polyhydroxybutyrate (PLA-PHB) (75:25 w/w) polymer films with mango leaf extracts (MLE) using solvent casting and a supercritical solvent impregnation process. The effects of pressure, temperature, and depressurization rate on the impregnation and release of bioactive …

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Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-HV) impregnated with mango leaves extracts using supercritical solvent impregnation

Ludisbel León-Marcos, Antonio Montes, Diego Valor, Ignacio García-Casas et autres

The impregnation of the polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-HV) with mango leaves extract (MLE) was carried out using the Supercritical Solvent Impregnation method. The impregnation loads, antioxidant compounds and physical properties of impregnated polymers were investigated with the variation of operating parameters (temperature (35 …

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Encapsulation of Phenolic Compounds Extracted from Beet By-Products: Analysis of Physical and Chemical Properties

M.C. Guamán-Balcázar, Magdalena Montero, Alejandro Celi, Antonio Montes et autres

Beet is a nutritious and health-promoting food with important bioactive compounds in its industrial by-products. The encapsulation of antioxidants from beet by-products has been proposed for valorization. For this, an ethanol–water extract was mixed with polyvinylpyrrolidone (PVP) (used as a carrier agent) …

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Impregnation of biodegradable polymer using a pressurized soaking method for food packaging

Ludisbel León-Marcos, Antonio Montes, Diego Valor, Ignacio García-Casas et autres

The Pressurized Soaking Impregnation Method combines the main advantages of supercritical solvent impregnation and the soaking casting technique. This work studied the impregnation of poly(3-hydroxy-butyrate-co3-hydroxy-valerate) (PHB-HV) sheets with mango leaf extracts using this method for its future use as active packaging. The …

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Morphological 3D Analysis of PLGA/Chitosan Blend Polymer Scaffolds and Their Impregnation with Olive Pruning Residues via Supercritical CO2

Ignacio García-Casas, Diego Valor, Hafsa Elayoubi, Antonio Montes et autres

Natural extracts, such as those from the residues of the Olea europaea industry, offer an opportunity for use due to their richness in antioxidant compounds. These compounds can be incorporated into porous polymeric devices with huge potential for tissue engineering such as …

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Encapsulation of Olive (Olea europaea L.) Pruning Waste Particles by Supercritical CO2 Technology

Antonio Montes, Diego Valor, Ignacio García-Casas, Ana Sánchez et autres

L.) contain a multitude of bioactive compounds such as sterols, carotenes, triterpenic alcohols and phenolic compounds. These compounds have been shown to exhibit antiviral, antioxidant, candida-growth-inhibitory, anticancer, antifungal, anti-inflammatory and antibacterial activities. In this sense, submicron particles from olive leaves with antioxidant …

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Processing antimicrobial CeO2-TiO2 nanocomposite using supercritical carbon dioxide

Ignacio García-Casas, Diego Valor, Desireé M. de los Santos, Clara M. Pereyra et autres

A nanocomposite powder of cerium and titanium oxide nanoparticles (NPs) was prepared using supercritical CO2. The characterization of the obtained powder showed spheres or quasi-spheres between 68 and 145 nm, depending on the conditions used. In all tests, N2 physisorption analysis showed …

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Supercritical Impregnation of Mangifera indica Leaves Extracts into Porous Conductive PLGA-PEDOT Scaffolds

Diego Valor, Ignacio García-Casas, Antonio Montes, Ella Danese et autres

Plant leaves, such as those from Mangifera indica, represent a potential utilization of waste due to their richness in bioactive compounds. Supercritical CO2 allows these compounds to be incorporated into various matrices by impregnation. Combined with its ability to generate polymeric scaffolds, …

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