Abstract:, pela idealização, contribuição e incentivo para a realização deste trabalho. Ao Dr. Fábio Eduardo da Costa, pela amizade construída nesses anos e pela orientação neste trabalho contribuindo para meu crescimento científico e intelectual. À Dra. Margarida Mizue Hamada, pela orientação no início do trabalho. À Dra. Luciana Vanni Gatti, do Centro de Química e Meio Ambiente do IPEN / CNEN-SP, pelo equipamento cedido para o experimento. A todos os colegas no Centro de Tecnologia das Radiações do IPEN / CNEN-SP que… Show more
“…For maximum stress, there was a reduction of 1.23% for the films with 30% OEO and an increase of 11.17% for the control film. These results indicate that irradiation affects in the PVC film is more intense in the PVC film without OEO, while in the presence of 30% w/w of OEO these changes were minimal.Accordingto Uzeli (2013), packaging properties should be maintained after sterilization [50] . Thus, PVC films with 30% orange oil meets this requirement.…”
In this work were developed and evaluated films of poly(vinyl chloride)-PVC additivated with orange essential oil-OEO. These films were evaluated with FT-IR spectroscopy; mechanical tests; migration OEO in simulants; and determination of stability after sterilization by gamma radiation at a dose of 25 kGy. The OEO was assessed with GC-MS and analysis of antimicrobial activity. The films were prepared by the casting solution technique. The essential oil concentrations in PVC were 2%, 10% and 30% (w/w). The results showed that the OEO was incorporated into the polymer matrix and that this oil had antimicrobial activity against the bacteria E. coli and S. aureus. The migration of OEO in the films occurred with all simulants. The incorporation of OEO in the films also made them more flexible. It was also found that additive with 30% w/w OEO provides a protective effect for the polymer after sterilization by gamma radiation.
“…For maximum stress, there was a reduction of 1.23% for the films with 30% OEO and an increase of 11.17% for the control film. These results indicate that irradiation affects in the PVC film is more intense in the PVC film without OEO, while in the presence of 30% w/w of OEO these changes were minimal.Accordingto Uzeli (2013), packaging properties should be maintained after sterilization [50] . Thus, PVC films with 30% orange oil meets this requirement.…”
In this work were developed and evaluated films of poly(vinyl chloride)-PVC additivated with orange essential oil-OEO. These films were evaluated with FT-IR spectroscopy; mechanical tests; migration OEO in simulants; and determination of stability after sterilization by gamma radiation at a dose of 25 kGy. The OEO was assessed with GC-MS and analysis of antimicrobial activity. The films were prepared by the casting solution technique. The essential oil concentrations in PVC were 2%, 10% and 30% (w/w). The results showed that the OEO was incorporated into the polymer matrix and that this oil had antimicrobial activity against the bacteria E. coli and S. aureus. The migration of OEO in the films occurred with all simulants. The incorporation of OEO in the films also made them more flexible. It was also found that additive with 30% w/w OEO provides a protective effect for the polymer after sterilization by gamma radiation.
ResumoA irradiação de alimentos usando radiação ionizante é um método direto de conservação de alimentos.Por via indireta, a radiação ionizante provoca a formação de radicais livres, no oxigênio presente no ar do
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