Rheological and antioxidant properties of chitosan/gelatin-based materials functionalized by pomegranate peel extract

Autor(es)

Bertolo, V, Mirella R. ; Martins, Virginia C. A. ^[1] ; Horn, Marilia M. ^[2] ; Brenelli, Livia B. ^{[3, 4]} ; Plepis, Ana M. G. ^[1]

Afiliação do(s) autor(es)

^[1] Bertolo, Mirella R., V, Univ Sao Paulo, Sao Carlos Inst Chem IQSC, Sao Carlos, SP - Brazil

^[2] Univ Kassel, Macromol Chem & Makromol Mat, Kassel - Germany

^[3] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Biorenewables Natl Lab LNBR, Campinas, SP - Brazil

^[4] State Univ Campinas UNICAMP, Interdisciplinary Ctr Energy Planning, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Carbohydrate Polymers; v. 228, JAN 15 2020.
• Citações Web of Science: 0

Resumo

Biopolymer-based materials are potential candidates for food coatings application. In this study, pomegranate (Punica granatum L.) peel extract (PPE) at different concentrations was incorporated to chitosan/gelatin gels and the rheological, antioxidant and structural properties were evaluated. Due to its high phenolic content, PPE enhanced the antioxidant capacity of chitosan/gelatin mixtures. PPE addition extended linear viscoelastic range and enabled the samples to easily flow under the applied shear rate. Rheological properties indicated that both viscosity and activation energy of materials containing natural compounds are highly dependent on temperature. Scanning electron microscopy (SEM) images revealed the influence of PPE concentration in the scaffolds pores size. Findings of this study proved that PPE was capable to improve the functional characteristics of chitosan/gelatin-based materials enhancing the desired properties for their potential application as food coatings. (AU)

• Processo FAPESP: 17/15477-8 - Desenvolvimento de um processo de pré-tratamento de baixa severidade para produção de oligossacarídeos de palha de cana-de-açúcar
• Beneficiário: Lívia Beatriz Brenelli de Paiva
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado