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metadata.artigo.dc.title: Development and characterization of biodegradable films based on Pereskia aculeata Miller mucilage
metadata.artigo.dc.creator: Oliveira, Natália Leite
Rodrigues, Adrise Aparecida
Neves, Isabelle Cristina Oliveira
Lago, Amanda Maria Teixeira
Borges, Soraia Vilela
Resende, Jaime Vilela de
metadata.artigo.dc.subject: Cross-linking agent
Edible films
Agente de reticulação
Filmes comestíveis
metadata.artigo.dc.publisher: Elsevier Apr-2019
metadata.artigo.dc.identifier.citation: OLIVEIRA, N. L. et al. Development and characterization of biodegradable films based on Pereskia aculeata Miller mucilage. Industrial Crops and Products, [S. l.], v. 130, p. 499-510, Apr. 2019.
metadata.artigo.dc.description.abstract: Ora-pro-nobis mucilage (MOPN) is a polysaccharide extracted from the leaves of Pereskia aculeata Miller (Cactaceae family), and is composed of the biopolymer arabinogalactan. The aim of this study was to evaluate the viability of MOPN-based films supplemented with glycerol. The films were developed using the casting technique in five treatments: 1.5% MOPN with 20% glycerol (w/w), 1.5% MOPN with 25% glycerol, 1.8% MOPN with 22.5% glycerol, 2.0% MOPN with 20% glycerol, and 2.0% MOPN with 25% glycerol. The films were characterized according to their rheological, optical, mechanical, thermal, and water vapor permeability (WVP) properties. The film-forming solution presented shear thinning and elastic behavior (G'>G"). Films with 1.5% MOPN and 20% glycerol presented greater elongation (46.10%), higher puncture strength 13.8 N, and lower WVP (8.288 g water·mm·day−1·m-²·kPa−1) than the other evaluated films. Glycerol acted as a cross-linking agent, increasing the bond between the MOPN chains, generating more rigid films. These films presented two glass transition temperatures, below 0 °C and around 60 °C. Thermogravimetry indicated that MOPN contributes to better thermal stability of the films. MOPN is a promising alternative for the use of biodegradable and/or edible packagings, and the best formulation studied was 1.5% MOPN and 20% glycerol.
metadata.artigo.dc.language: en_US
Appears in Collections:DCA - Artigos publicados em periódicos

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