Pectin-based color indicator films incorporated with spray-dried Hibiscus extract microparticles

Autor(es)

Mendes, Juliana Farinassi ; Norcino, Lais Bruno ; Manrich, Anny ; de Oliveria, Tiago Jose Pires ; Mendes, Rafael Farinassi ; Mattoso, Luiz Henrique Capparelli

• Tipo de documento: Artigo Científico
• Fonte: Food Research International; v. 162, p. 15-pg., 2022-12-01.

Resumo

Colorimetric films incorporated with anthocyanins as an indicator for freshness monitoring have aroused growing interest recently. The pH-sensing colorimetric film were developed based on pectin (HM), containing aqueous hibiscus extract microparticles (HAE). HAE microparticles were obtained by spray drying with different wall materials (Inulin-IN, maltodextrin-MD and their combination). The films were obtained on large scale by continuous casting. These films were characterized for physicochemical analysis, morphological structure, thermal and barrier properties, antioxidant activity, and color change at different pH. The addition of HAE microparticles caused relevant changes to HM-based films, such as in mechanical behavior and improved barrier property (11-22% WVTR reduction) depending on the type of wall material used and the concentration added. It was verified with the thermal stability of films, with a slight increase being observed. The color variation of smart films was entirely pH-dependent. Overall, the proposed color indicator films showed unique features and functionalities and could be used as an alternative natural pH indicator in smart packaging systems. (AU)

• Processo FAPESP: 19/26622-4 - Desenvolvimento de curativos nanoestruturados contendo agentes antimicrobianos visando aplicações de engenharia de tecido em bovinos
• Beneficiário: Juliana Farinassi Mendes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado