Gelatin/chitosan based films loaded with nanocellulose from soybean straw and activated with ``Pitanga{''} (Eugenia uniflora L.) leaf hydroethanolic extract in W/O/W emulsion

Autor(es)

Tessaro, Larissa ^[1] ; Lourenco, Rodrigo Vinicius ^[1] ; Martelli-Tosi, Milena ^[1] ; Sobral, Paulo Jose do Amaral ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Anim Sci & Food Engn, Dept Food Engn, Av Duque Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil

^[2] Univ Sao Paulo, Food Res Ctr FoRC, Rua Lago 250, Semiind Bldg, Block C, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Biological Macromolecules; v. 186, p. 328-340, SEP 1 2021.
• Citações Web of Science: 2

Resumo

Mechanical properties of biopolymer films can be a limitation for their application as packaging. Soybean straw crystalline nanocelluloses (NC) can act as reinforcement load to improve these material properties, and W/O/W double emulsion (DE) as encapsulating bioactive agents can contribute to produce active packaging. DE droplets were loaded with pitanga leaf (Eugenia uniflora L.) hydroethanolic extract. The mechanical, physicochemical, and barrier properties, and the microstructure of gelatin and/or chitosan films incorporated with NC or NC/DE were determined by classical methods. Film antioxidant activities were determined by ABTS and DPPH methods. The incorporation of NC/DE in gelatin and/or chitosan films (NC/DE films) changed the morphology of these films, which presented more heterogeneous air-side surfaces and cross-sections. They presented rougher topographies, notably greater resistance and stiffness, higher barrier properties to UV/Vis light and higher antioxidant activity than the NC films. Moisture content, solubility in water and water vapor permeability decreased due to the presence of DE. Overall, the NC/DE films improved all properties, when compared to the properties of NC films or those of films with only DE, from a previously published study. In spite of not having antimicrobial activity against the studied bacteria, NC/DE films did display a great antioxidant activity. (AU)

• Processo FAPESP: 16/18788-1 - Aplicação da microespectroscopia Raman e quimiometria na caracterização de microcarreadores poliméricos de compostos ativos e fotoativos
• Beneficiário: Milena Martelli Tosi
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/07914-8 - FoRC - Centro de Pesquisa em Alimentos
• Beneficiário: Bernadette Dora Gombossy de Melo Franco
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs