| Texto completo | |
| Autor(es): |
Marangoni Junior, Luis
;
Rodrigues, Rui M.
;
Pereira, Ricardo N.
;
Ito, Danielle
;
Teixeira, Fabio Gomes
;
Padula, Marisa
;
Vicente, Antonio A.
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | OURNAL OF FOOD MEASUREMENT AND CHARACTERIZATIO; v. N/A, p. 10-pg., 2025-07-11. |
| Resumo | |
The integrity of packaging material is crucial for understanding the interactions among food, packaging, and processing, as it directly influences packaging performance, the efficacy of processing methods, and the stability of food. This study aimed to evaluate the effects of various ohmic heating (OH) processing conditions on the integrity of PETmet/PE films (PET: polyethylene terephthalate, met: metallization, and PE: polyethylene). OH processing was conducted on sealed packages containing a food simulant (0.1% (w/v) sodium chloride solution) with a voltage gradient of 3.7 V/cm and electrical frequencies of 20 kHz and 50 Hz. The target temperature was set at 80 degrees C, with holding times of 5, 10, and 15 min. The packages were assessed before and after OH processing concerning their structure and properties. The PETmet/PE films demonstrated no changes in chemical groups, thermal properties, or barrier properties related to water vapor and oxygen. However, the results show that OH processing caused measurable changes, such as a decrease in crystallinity from 21.4 to 14.8%. Mechanical properties like tensile and seal strength were also affected but remained within the typical range for such films, and the packaging integrity was preserved with no leaks. These minor variations do not compromise the material's performance, supporting its suitability for practical applications. Therefore, it can be concluded that PETmet/PE packaging is suitable for food products that will undergo OH processing under the conditions utilized in this research. (AU) | |
| Processo FAPESP: | 22/09587-3 - Efeito do aquecimento ôhmico sobre as propriedades dos materiais de embalagens flexíveis |
| Beneficiário: | Luís Marangoni Júnior |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado |
| Processo FAPESP: | 18/15759-6 - EMU concedido no processo 2017/50349-0: sistema de medição de permeabilidade ao vapor dágua |
| Beneficiário: | Eloísa Elena Corrêa Garcia |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 21/04043-2 - Interação alimento-embalagem-processo: efeito de tecnologias emergentes de processamento e de diferentes simulantes de alimentos sobre as propriedades de embalagens |
| Beneficiário: | Luís Marangoni Júnior |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 17/50349-0 - Plano de desenvolvimento institucional em pesquisa do Instituto de Tecnologia de Alimentos - ITAL (PDIp) |
| Beneficiário: | Claire Isabel Grígoli de Luca Sarantópoulos |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Modernização de Institutos Estaduais de Pesquisa |
| Processo FAPESP: | 18/15758-0 - EMU concedido no processo 2017/50349-0: sistema de medição de permeabilidade ao oxigênio |
| Beneficiário: | Eloísa Elena Corrêa Garcia |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |