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

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 (w...

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Detalles Bibliográficos
Autores principales: Ortega, Florencia, Sobral, Pablo Antonio, Jios, Jorge Luis, Arce, Valeria Beatriz, García, María Alejandra
Formato: Articulo
Lenguaje:Inglés
Publicado: 2022
Materias:
Química
Silver nanoparticles
Starch nanocomposite films
Release kinetic
Food simulants
Bio-disintegration
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/154462
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-154462
record_format dspace
spelling I19-R120-10915-1544622023-06-16T20:06:52Z http://sedici.unlp.edu.ar/handle/10915/154462 issn:2073-4360 Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil Ortega, Florencia Sobral, Pablo Antonio Jios, Jorge Luis Arce, Valeria Beatriz García, María Alejandra 2022 2023-06-16T17:05:29Z en Química Silver nanoparticles Starch nanocomposite films Release kinetic Food simulants Bio-disintegration 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 Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Silver nanoparticles
Starch nanocomposite films
Release kinetic
Food simulants
Bio-disintegration
spellingShingle Química
Silver nanoparticles
Starch nanocomposite films
Release kinetic
Food simulants
Bio-disintegration
Ortega, Florencia
Sobral, Pablo Antonio
Jios, Jorge Luis
Arce, Valeria Beatriz
García, María Alejandra
Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
topic_facet Química
Silver nanoparticles
Starch nanocomposite films
Release kinetic
Food simulants
Bio-disintegration
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.
format Articulo
Articulo
author Ortega, Florencia
Sobral, Pablo Antonio
Jios, Jorge Luis
Arce, Valeria Beatriz
García, María Alejandra
author_facet Ortega, Florencia
Sobral, Pablo Antonio
Jios, Jorge Luis
Arce, Valeria Beatriz
García, María Alejandra
author_sort Ortega, Florencia
title Starch nanocomposite films: migration studies of nanoparticles to food simulants and bio-disintegration in soil
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
publishDate 2022
url http://sedici.unlp.edu.ar/handle/10915/154462
work_keys_str_mv AT ortegaflorencia starchnanocompositefilmsmigrationstudiesofnanoparticlestofoodsimulantsandbiodisintegrationinsoil
AT sobralpabloantonio starchnanocompositefilmsmigrationstudiesofnanoparticlestofoodsimulantsandbiodisintegrationinsoil
AT jiosjorgeluis starchnanocompositefilmsmigrationstudiesofnanoparticlestofoodsimulantsandbiodisintegrationinsoil
AT arcevaleriabeatriz starchnanocompositefilmsmigrationstudiesofnanoparticlestofoodsimulantsandbiodisintegrationinsoil
AT garciamariaalejandra starchnanocompositefilmsmigrationstudiesofnanoparticlestofoodsimulantsandbiodisintegrationinsoil
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