Coating with chitosan-based edible films for mechanical/biological protection of strawberries

Autor(es)

Pavinatto, Adriana ^[1] ; de Almeida Mattos, Alexia Victoria ^[2] ; Granato Malpass, Ana Claudia ^[2] ; Okura, Monica Hitomi ^[2] ; Balogh, Debora Teresia ^[3] ; Sanfelice, Rafaela Cristina ^[2]

Afiliação do(s) autor(es)

^[1] Brazil Univ, Dept Biomed Engn, Sci & Technol Inst, 235 Carolina Fonseca St, BR-08230030 Sao Paulo, SP - Brazil

^[2] Fed Univ Triangulo Mineiro UFTM, Inst Technol & Exact Sci ICTE, Dept Chem Engn, 1250 Randolfo Borges Jr Ave, BR-38064200 Uberaba, MG - Brazil

^[3] Univ Sao Paulo, Sao Carlos Inst Phys, 400 Trabalhador Sao Carlense Ave, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Biological Macromolecules; v. 151, p. 1004-1011, MAY 15 2020.
• Citações Web of Science: 1

Resumo

The present work reports the development of chitosan-based films for application as protective layer for natural foods such as fruits and vegetables. Chitosan is a biopolymer known for its antibacterial and antifungal properties that when combined with its biocompatibility and biodegradability can be widely applied in areas such as cosmetic, pharmaceutical and food industry. In this work, thin films based on chitosan were obtained by the drop-casting method using glycerol to enhance elasticity and hydrophobic character. Such properties are desirable to form a protective layer that is not highly soluble in water. The results showed that the bactericidal character of chitosan against gram-positive and gram-negative bacteria remains after plasticization. Strawberries coated with chitosan/glycerol 30% films (Chi/30%Gly) showed resistance against gray fungus attack and an insignificant alteration in their flavor, appearance, aroma and texture. In other words, the chitosan film protected the strawberry from fungi attack, showing its great potential as edible coating for fruits and vegetables. (C) 2019 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 17/19470-8 - Desenvolvimento de biossensor portátil para detecção não invasiva de ácido úrico como indicativo de hiperuricemia
• Beneficiário: Adriana Pavinatto da Costa
• Modalidade de apoio: Auxílio à Pesquisa - Regular