Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil

Autores
Ortega, Florencia; Sobral, Pablo Antonio; Jios, Jorge Luis; Arce, Valeria Beatriz; García, María Alejandra
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, films containing AgNPs were obtained by different green synthesis techniques (AgNP in situ and AgNP L). The inclusion of nanoparticles in the starch matrix improved both mechanical and barrier properties. The migration of AgNPs from the nanocomposite material to three food simulants (water, 3% v/v acetic acid and 15% v/v ethanol) was studied. The experimental data were fitted by using different widely accepted mathematical models (Fickian, Ritger and Peppas, and Weibull), indicating that the AgNP migration followed a complex mechanism. The silver concentration (mg Ag per kg of simulant) that was released from the nanocomposite films was higher for the samples with AgNPs in situ than for those containing AgNP L. Likewise, the maximum release value (0.141 mg/dm2 for AgNPs in situ in acetic acid simulant) was lower than the limits proposed by the legislation (European Commission and MERCOSUR; 10 and 8 mg/dm2, respectively). The replacement of conventional plastic materials by biodegradable ones requires the evaluation of biodisintegration tests in soil. In this sense, a period of 90 days was necessary to obtain ≥50% weight loss in both nanocomposite films. Additionally, the bio-disintegration of the samples did not contribute with phytotoxic compounds to the soil, allowing the germination of fast-growing seeds.
Centro de Investigación y Desarrollo en Criotecnología de Alimentos
Centro de Investigaciones Ópticas
Facultad de Ciencias Exactas
Materia
Química
Silver nanoparticles
Starch nanocomposite films
Release kinetic
Food simulants
Bio-disintegration
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/154462
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/154462
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soilOrtega, FlorenciaSobral, Pablo AntonioJios, Jorge LuisArce, Valeria BeatrizGarcía, María AlejandraQuímicaSilver nanoparticlesStarch nanocomposite filmsRelease kineticFood simulantsBio-disintegrationIn this work, films containing AgNPs were obtained by different green synthesis techniques (AgNP in situ and AgNP L). The inclusion of nanoparticles in the starch matrix improved both mechanical and barrier properties. The migration of AgNPs from the nanocomposite material to three food simulants (water, 3% v/v acetic acid and 15% v/v ethanol) was studied. The experimental data were fitted by using different widely accepted mathematical models (Fickian, Ritger and Peppas, and Weibull), indicating that the AgNP migration followed a complex mechanism. The silver concentration (mg Ag per kg of simulant) that was released from the nanocomposite films was higher for the samples with AgNPs in situ than for those containing AgNP L. Likewise, the maximum release value (0.141 mg/dm2 for AgNPs in situ in acetic acid simulant) was lower than the limits proposed by the legislation (European Commission and MERCOSUR; 10 and 8 mg/dm2, respectively). The replacement of conventional plastic materials by biodegradable ones requires the evaluation of biodisintegration tests in soil. In this sense, a period of 90 days was necessary to obtain ≥50% weight loss in both nanocomposite films. Additionally, the bio-disintegration of the samples did not contribute with phytotoxic compounds to the soil, allowing the germination of fast-growing seeds.Centro de Investigación y Desarrollo en Criotecnología de AlimentosCentro de Investigaciones ÓpticasFacultad de Ciencias Exactas2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/154462enginfo:eu-repo/semantics/altIdentifier/issn/2073-4360info:eu-repo/semantics/altIdentifier/doi/10.3390/polym14091636info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:40:03Zoai:sedici.unlp.edu.ar:10915/154462Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:40:03.384SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
title Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
spellingShingle Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
Ortega, Florencia
Química
Silver nanoparticles
Starch nanocomposite films
Release kinetic
Food simulants
Bio-disintegration
title_short Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
title_full Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
title_fullStr Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
title_full_unstemmed Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
title_sort Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
dc.creator.none.fl_str_mv Ortega, Florencia
Sobral, Pablo Antonio
Jios, Jorge Luis
Arce, Valeria Beatriz
García, María Alejandra
author Ortega, Florencia
author_facet Ortega, Florencia
Sobral, Pablo Antonio
Jios, Jorge Luis
Arce, Valeria Beatriz
García, María Alejandra
author_role author
author2 Sobral, Pablo Antonio
Jios, Jorge Luis
Arce, Valeria Beatriz
García, María Alejandra
author2_role author
author
author
author
dc.subject.none.fl_str_mv Química
Silver nanoparticles
Starch nanocomposite films
Release kinetic
Food simulants
Bio-disintegration
topic Química
Silver nanoparticles
Starch nanocomposite films
Release kinetic
Food simulants
Bio-disintegration
dc.description.none.fl_txt_mv In this work, films containing AgNPs were obtained by different green synthesis techniques (AgNP in situ and AgNP L). The inclusion of nanoparticles in the starch matrix improved both mechanical and barrier properties. The migration of AgNPs from the nanocomposite material to three food simulants (water, 3% v/v acetic acid and 15% v/v ethanol) was studied. The experimental data were fitted by using different widely accepted mathematical models (Fickian, Ritger and Peppas, and Weibull), indicating that the AgNP migration followed a complex mechanism. The silver concentration (mg Ag per kg of simulant) that was released from the nanocomposite films was higher for the samples with AgNPs in situ than for those containing AgNP L. Likewise, the maximum release value (0.141 mg/dm2 for AgNPs in situ in acetic acid simulant) was lower than the limits proposed by the legislation (European Commission and MERCOSUR; 10 and 8 mg/dm2, respectively). The replacement of conventional plastic materials by biodegradable ones requires the evaluation of biodisintegration tests in soil. In this sense, a period of 90 days was necessary to obtain ≥50% weight loss in both nanocomposite films. Additionally, the bio-disintegration of the samples did not contribute with phytotoxic compounds to the soil, allowing the germination of fast-growing seeds.
Centro de Investigación y Desarrollo en Criotecnología de Alimentos
Centro de Investigaciones Ópticas
Facultad de Ciencias Exactas
description In this work, films containing AgNPs were obtained by different green synthesis techniques (AgNP in situ and AgNP L). The inclusion of nanoparticles in the starch matrix improved both mechanical and barrier properties. The migration of AgNPs from the nanocomposite material to three food simulants (water, 3% v/v acetic acid and 15% v/v ethanol) was studied. The experimental data were fitted by using different widely accepted mathematical models (Fickian, Ritger and Peppas, and Weibull), indicating that the AgNP migration followed a complex mechanism. The silver concentration (mg Ag per kg of simulant) that was released from the nanocomposite films was higher for the samples with AgNPs in situ than for those containing AgNP L. Likewise, the maximum release value (0.141 mg/dm2 for AgNPs in situ in acetic acid simulant) was lower than the limits proposed by the legislation (European Commission and MERCOSUR; 10 and 8 mg/dm2, respectively). The replacement of conventional plastic materials by biodegradable ones requires the evaluation of biodisintegration tests in soil. In this sense, a period of 90 days was necessary to obtain ≥50% weight loss in both nanocomposite films. Additionally, the bio-disintegration of the samples did not contribute with phytotoxic compounds to the soil, allowing the germination of fast-growing seeds.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/154462
url http://sedici.unlp.edu.ar/handle/10915/154462
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2073-4360
info:eu-repo/semantics/altIdentifier/doi/10.3390/polym14091636
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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