Alejandra Torres

ORCID: 0000-0002-2582-0625
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About
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Research Areas
  • biodegradable polymer synthesis and properties
  • Polymer Foaming and Composites
  • Public Health and Social Inequalities
  • Health and Lifestyle Studies
  • Nanocomposite Films for Food Packaging
  • Carbon dioxide utilization in catalysis
  • Cinema History and Criticism
  • Health and Medical Education
  • Latin American Literature Studies
  • Ethics and bioethics in healthcare
  • Microplastics and Plastic Pollution
  • Comparative Literary Analysis and Criticism
  • Media, Journalism, and Communication History
  • Ionic liquids properties and applications
  • Phase Equilibria and Thermodynamics
  • Primary Care and Health Outcomes
  • Food, Nutrition, and Cultural Practices
  • Polymer Nanocomposites and Properties
  • Healthcare Systems and Reforms
  • Photographic and Visual Arts
  • Aging, Health, and Disability
  • Finance, Taxation, and Governance
  • Human Rights and Immigration
  • Spanish Literature and Culture Studies
  • Argentine historical studies

Universidad de Santiago de Chile
2016-2025

Universidad Autónoma del Estado de México
2014-2024

University of California, Los Angeles
2004-2024

Inter-American Development Bank
2024

Hospital Clínico de la Universidad de Chile
2023

University of Chile
2014-2023

Centro Uruguayo de Imagenología Molecular
2023

Mexican Social Security Institute
2013-2021

Instituto Nacional del Agua
2021

Hospital Universitario Insular de Gran Canaria
2020

In the last decade, among emerging technologies in area of bioplastics, additive manufacturing (AM), commonly referred to as 3D printing, stands out. This technology has gained great interest development new products, mainly due its capability easily produce customized and low-cost plastic products. work aims evaluate effect supercritical foaming 3D-printed parts based on a commercial PLA matrix loaded with calcium carbonate, for single-use sustainable food contact materials. PLA/CaCO

10.3390/polym16060798 article EN Polymers 2024-03-13

Matrix GLA protein (MGP) is expressed in endothelial cells (EC), and MGP deficiency results developmental defects suggesting involvement EC function. To determine the role of EC, we cultured bovine aortic with increasing concentrations human (hMGP) for 24 h. The showed increased proliferation, migration, tube formation, release vascular growth factor-A (VEGF-A) basic fibroblast factor (bFGF). HMGP, added endogenously or transiently expressed, VEGF gene expression dose-dependently as...

10.1074/jbc.m406868200 article EN cc-by Journal of Biological Chemistry 2004-09-29

Nanocomposites based on biopolymers have been recognised as potential materials for the development of new ecofriendly food packaging. In addition, if these incorporate active substances in their structure, applications are much higher. Therefore, this work was oriented to develop nanocomposites with antimicrobial activity cellulose acetate (CA), a commercial organoclay Cloisite30B (C30B), thymol (T) natural component and tri-ethyl citrate (TEC) plasticiser. were prepared by solvent casting...

10.1080/19440049.2013.876105 article EN Food Additives & Contaminants Part A 2013-12-17

Microcellular nanocomposite foams functionalized with cinnamaldehyde (Ci) were obtained through two-step supercritical foaming and impregnation processing. PLA different C30B concentrations (1, 2, 3 wt.%) by scCO2 at 25 MPa 135 °C impregnated Ci 12 40 °C. The effect of the content incorporation on morphological, structural, thermal, release properties developed investigated. was not influenced C30B’s addition. presence reduced average pore diameter slightly crystallinity degree extensively....

10.3390/pr10020376 article EN Processes 2022-02-16

In the present study, supercritical impregnation process using carbon dioxide (scCO2) was applied to incorporate active compound cinnamaldehyde into PLA films, aiming develop an innovative food packaging solution. This approach leverages unique properties of scCO2 achieve efficient incorporation bioactive compounds. Impregnation tests were performed at a pressure 12 MPa, constant temperature 40 °C, and controlled depressurization rate 1 MPa min–1, ensuring optimal conditions for process. The...

10.1021/acsfoodscitech.4c00821 article EN ACS Food Science & Technology 2025-01-08

Conventional techniques for incorporating active ingredients into polymeric matrices are accompanied by certain disadvantages, primarily attributable to the inherent characteristics of ingredient itself, including its sensitivity temperature. A potential solution these challenges lies in utilization supercritical carbon dioxide (scCO2) formation foam and incorporation ingredients, conjunction with encapsulation inclusion complexes (ICs), ensure physical stability augmented bioactivity. The...

10.3390/polym17060803 article EN Polymers 2025-03-18

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 PLA being used in production packaging materials for beverages such as water juice, plastic was exposed food simulants A B according international regulatory standards, these were then subjected repeated cycles, with a maximum five cycles. After each cycle, material's properties evaluated physicochemical...

10.1002/pol.20241028 article EN other-oa Journal of Polymer Science 2025-03-23

The main objective of this work was to study the release cinnamaldehyde (CIN) from electrospun poly lactic acid (e-PLA) mats obtained through two techniques: (i) direct incorporation active compound during electrospinning process (e-PLA-CIN); and (ii) supercritical carbon dioxide (scCO2) impregnation CIN within PLA (e-PLA/CINimp). development characterization both these were investigated with purpose modifying kinetic compound. Morphological, structural, thermal properties materials also...

10.3390/polym10050479 article EN Polymers 2018-04-27
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