Alejandra Torres

Supercritical CO₂-assisted processing of PLA/PBAT blends with β-cyclodextrin/caffeic acid inclusion complexes: Mass transport modeling and disintegration

Patricia Rivera, Alejandra Torres, M. Pacheco, Julio Romero et autres

The engineering of polymeric composite foams with tailored cellular architecture remains a critical challenge for sustainable active packaging. In this study, PLA/PBAT composite foams were developed via a sequential supercritical CO₂ (scCO₂) impregnation and foaming. Caffeic acid (CA) was incorporated as the …

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Precipitation and encapsulation of β-sitosterol using supercritical antisolvent (SAS) method for controlled nutraceutical release.

Daniela Cerro, Albertina Cabañas, Alejandra Torres, Fouad Zahran et autres

β-sitosterol (βsit) is a plant-derived phytosterol with recognized health-promoting properties, but its low aqueous solubility and limited bioavailability constrain its use in nutraceuticals and functional foods. This study aimed to precipitate and encapsulate βsit within polycaprolactone (PCL) using the Supercritical AntiSolvent (SAS) …

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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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Development of Antioxidant Multilayer Film with Compostable Properties, Based on Polylactic Acid, Mater-Bi, and Eugenol

Marcia Lira, Julio E. Bruna, Sergio Quilaqueo, Manuela Ortega 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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Integration of Complexed Caffeic Acid into Poly(Lactic Acid)-Based Biopolymer Blends by Supercritical CO2-Assisted Impregnation and Foaming: Processing, Structural and Thermal Characterization

Patricia Rivera Fuentealba, Alejandra Torres, M. Pacheco, Julio Romero Figueroa et autres

Conventional techniques for incorporating active ingredients into polymeric matrices are accompanied by certain disadvantages, primarily attributable to the inherent characteristics of the active ingredient itself, including its sensitivity to temperature. A potential solution to these challenges lies in the utilization of supercritical …

The impact of detailed history taking: a case report of pediatric pulmonary and hepatic hydatid disease from Ecuador

Camila Gallegos, Ariel Vargas, David Rivera Estrella, Alejandra Torres et autres

Background: Echinococcosis is a uncommon condition in pediatric patients, and encompasses alveolar and cystic forms, predominantly affecting the lungs and liver. Transmission occurs primarily through zoonotic means, such as the contamination of water and food by infected dog and other canid feces. …

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Supercritical fluid extraction of emulsion-assisted encapsulation of hypocholesterolemic bioactive compounds

Daniela Cerro, Alejandra Torres, Julio Romero, Camilo Streitt et autres

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Nanoencapsulation of food-grade bioactive compounds using a supercritical fluid extraction of emulsions process: Effect of operational variables on the properties of nanocapsules and new perspectives

Daniela Cerro, Adrián Rojas, Alejandra Torres, Carolina Villegas et autres

In recent years, there has been a growing interest in the nanoencapsulation of a wide variety of bioactive compounds by extracting emulsions using Supercritical Fluid Extraction of Emulsions (SFEE) process for the development of nutraceutical products and functional foods. This work includes …

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Semantic Memory and Lexical Availability in Parkinson’s Disease: A Statistical Learning Study

Juan F. Cardona, Johan S. Grisales-Cárdenas, Catalina Trujillo, Jesús A. Diazgranados et autres

Parkinson's disease (PD) is a neurodegenerative disorder that causes a progressive impairment in motor and cognitive functions. Although semantic fluency deficits have been described in PD, more specific semantic memory (SM) and lexical availability (LA) domains have not been previously addressed. Here, …

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Predicting and Characterizing Neurodegenerative Subtypes with Multimodal Neurocognitive Signatures of Social and Cognitive Processes

Agustín M. Ibáñez, Sol Fittipaldi, Catalina Trujillo, Tania Jaramillo et autres

BACKGROUND: Social cognition is critically compromised across neurodegenerative diseases, including the behavioral variant frontotemporal dementia (bvFTD), Alzheimer's disease (AD), and Parkinson's disease (PD). However, no previous study has used social cognition and other cognitive tasks to predict diagnoses of these conditions, let …

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