Polímeros: Ciência e Tecnologia
https://revistapolimeros.org.br/article/doi/10.1590/0104-1428.2069
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Aplicação de nanotecnologia em embalagens de alimentos

Application of nanothecnology in food packaging

Almeida, Ana Carolina Sergio; Franco, Elisângela Aparecida Nazário; Peixoto, Fernanda Marques; Pessanha, Kênia Letícia Ferreira; Melo, Nathália Ramos

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Resumo

A nanotecnologia tem grande potencial de aplicação na indústria de alimentos. No desenvolvimento de embalagens, pode proporcionar diferentes alternativas, tais como o desenvolvimento de nanopartículas, nanodispersões, nanolaminados, e nanotubos, que, associados aos polímeros, podem fornecer diversas funções. Por exemplo, pela incorporação de nanopartículas com propriedades antimicrobianas; nanosensores capazes de detectar produtos químicos, agentes patogênicos e toxinas em alimentos; nanopartículas bioativas capazes de manter os compostos em condições ideais, até a sua migração para o produto alimentício e nanocompósitos, que melhorem as propriedades de flexibilidade, barreira a gases e umidade e quanto à absorção de irradiação UV dos materiais aos quais são incorporados, assim como a estabilidade frente à temperatura. Este artigo relata algumas aplicações da nanotecnologia em embalagens de alimentos, bem como questões sobre toxicidade e regulamentação relacionadas à possibilidade de migração das nanopartículas para os alimentos; razão pela qual o setor alimentício tem sido cauteloso com a utilização desses materiais.

Palavras-chave

toxicidade, regulamentação, nanopartículas, embalagem ativa, embalagem inteligente.

Abstract

Nanotechnology has great application potential in the food industry. In packaging development, it can provide several alternatives, such as the formation of nanoparticles, nanodispersions, nanolayered and nanotubes, which, associated with polymers, can provide multiple functions. For example, by embedding nanoparticles with antimicrobial properties; nanosensors capable of detecting chemicals products, pathogens and toxins in food; bioactive nanoparticles capable of maintaining compounds at optimal conditions until its migration to the food product and nanocomposites, which improve the properties of flexibility, gas and humidity barrier and UV irradiation absorption of the materials to which are incorporated, as well as stability against temperature. This article reports some applications of nanotechnology in food packaging, as well as questions regarding toxicity and regulations related to the migration of nanoparticles to the food products; reason why the food industry has been cautious with the utilization of these materials.

Keywords

toxicity, regulation, nanoparticles, active packaging, intelligent packaging.

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