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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Bi-layer gelatin active films with ``Pitanga{''} leaf hydroethanolic extract and/or natamycin in the second layer

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Author(s):
Luciano, Carla G. [1] ; Tessaro, Larissa [1] ; Lourenco, V, Rodrigo ; Bittante, Ana Monica Q. B. [2] ; Fernandes, Andrezza M. [3] ; Sobral, Paulo J. A. [4, 2]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Fac Anim Sci & Food Engn, Dept Food Engn, Pirassununga - Brazil
[2] Lourenco, Rodrigo, V, Univ Sao Paulo, Fac Anim Sci & Food Engn, Dept Food Engn, Pirassununga - Brazil
[3] Univ Sao Paulo, Fac Anim Sci & Food Engn, Dept Vet Med, Pirassununga - Brazil
[4] Univ Sao Paulo, Food Res Ctr FoRC, Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Journal of Applied Polymer Science; v. 138, n. 42 SEP 10 2021.
Web of Science Citations: 0
Abstract

Research on biopolymers-based active films produced with natural antioxidants and/or antimicrobials has gained attention over the last few years; however, anti-mold activity has been less studied than those of anti-bacteria. The aim of this work was the development and characterization of bi-layer films based on gelatin with natamycin and/or ``Pitanga{''} leaf hydroethanolic extract in the second thin layer in order to determine the effects of these bioactive compounds on bi-layered film properties. The films were characterized regarding their moisture content and solubility in water, optical properties, microstructure, mechanical and thermal properties, water contact angle, water vapor permeability, UV/visible light transmission, X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, and antioxidant and anti-mold activities. Active films presented activity against Penicillium spp and Aspergillus niger and demonstrated antioxidant activity, as measured by ABTS(center dot+) and DPPH center dot methods. Neither additive used in the films' second layer significantly affected the films' moisture content, thermal properties or the molecular interactions of the polymer matrix, assessed by FTIR, although some mechanical properties were affected, and the water contact angle. In conclusion, bi-layer films have reduced the quantity of additives required to maintain the antioxidant and anti-mold activities, as compared to similar monolayer films of the same thickness. (AU)

FAPESP's process: 13/07914-8 - FoRC - Food Research Center
Grantee:Bernadette Dora Gombossy de Melo Franco
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC