Autor(es)

de Oliveira, Taila V. ; de Freitas, Pedro A. V. ; Pola, Cicero C. ; Terra, Larissa R. ; da Silva, Jose O. R. ; Badaro, Amanda T. ; Nelson Jr, S. ; de Oliveira, Marciano M. ; Silva, Rafael R. A. ; Soares, Nilda de F. F.

• Tipo de documento: Artigo Científico
• Fonte: POLYSACCHARIDES; v. 2, n. 3, p. 16-pg., 2021-09-01.

Resumo

On behalf of a circular economy, regular plastics have been replaced by biodegradable packagings. Besides, active films have been applied to improve the shelf-life and quality of foods. In this work, blends were developed using starch as a low-cost natural polymer, mixed with poly(vinyl alcohol) due to its physical-chemical and biodegradable properties. Moreover, maleic anhydride (MaAh), cellulose-nanocrystal (CN), and nisin-z (N-Z) were added, respectively, as a compatibilizer, a mechanical-reinforce, and antimicrobial agents. The thermal stability of the films was analyzed, which blends' melting temperature occurred around 200-207 degrees C, and it was influenced by CN, N-Z, and MaAh amounts. N-Z and MaAh acted against S. aureus and P. aeruginosa by compound diffusion (inhibition-halo around 1.85 and 2.18 cm); while S. Choleraesuis and E. coli were inhibited by contact. Therefore, these blends presented the potential to be used as active biodegradable packaging in the food industry. (AU)

• Processo FAPESP: 19/06842-0 - Técnicas de imagem para determinação da composição de macarrão durante cozimento
• Beneficiário: Amanda Teixeira Badaró
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto
• Processo FAPESP: 17/17628-3 - Análise de imagens e espectroscopia de infravermelho próximo (NIR) na avaliação de qualidade e autenticação de alimentos
• Beneficiário: Amanda Teixeira Badaró
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto