Development of cassava starch-based films incorporated with phenolic compounds produced by an Amazonian fungus

Falcão, Lucas de Souza; Oliveira, Isabella de Lima; Gurgel, Raiana Silveira; de Souza, Anne Terezinha Fernandes; Mendonça, Leilane de Souza; Usuda, Érik Oda; do Amaral, Thaís Santiago; Veggi, Priscilla Carvalho; Campelo, Pedro Henrique; de Vasconcellos, Marne Carvalho; Albuquerque, Patrícia Melchionna; de Moraes, Mariana Agostini

doi:10.1016/j.ijbiomac.2023.128882

International Journal of Biological Macromolecules

2024

DOI: 10.1016/j.ijbiomac.2023.128882

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Development of cassava starch-based films incorporated with phenolic compounds produced by an Amazonian fungus

Lucas de Souza Falcão,

Isabella de Lima Oliveira,

Raiana Silveira Gurgel

et al.

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2024

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Cited by 2 publications

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Isolation and Identification of Pigment-Producing Endophytic Fungi from the Amazonian Species Fridericia chica

de Melo Pereira,

Gurgel,

de Souza

et al. 2024

JoF

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Pigments of fungal origin have aroused increasing interest in the food dye and cosmetic industries since the global demand for natural dyes has grown. Endophytic microorganisms are a source of bioactive compounds, and Amazonian plant species can harbor fungi with a wide range of biotechnological applications. Popularly known in Brazil as crajiru, Fridericia chica is a medicinal plant that produces a red pigment. In this study, a total of 121 fungi were isolated in potato dextrose agar from three plants. We identified nine pigment-producing endophytic fungi isolated from branches and leaves of F. chica. The isolates that showed pigment production in solid media were molecularly identified via multilocus analysis as Aspergillus welwitschiae, A. sydowii, Curvularia sp., Diaporthe cerradensis (two strains), Hypoxylon investiens, Neoscytalidium sp. (two strains) and Penicillium rubens. These isolates were subjected to submerged fermentation in two culture media to obtain metabolic extracts. The extracts obtained were analyzed in terms of their absorbance between 400 and 700 nm. The pigmented extract produced by H. investiens in medium containing yeast extract showed maximum absorbance in the red absorption range (UA700 = 0.550) and significant antioxidant and antimicrobial activity. This isolate can thus be considered a new source of extracellular pigment.

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Isolation and Identification of Pigment-Producing Endophytic Fungi from the Amazonian Species Fridericia chica

de Melo Pereira,

Gurgel,

de Souza

et al. 2024

JoF

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Tailoring Pectin-PLA Bilayer Film for Optimal Properties as a Food Pouch Material

Said,

Olawuyi,

Lee

2024

Polymers

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This study focuses on developing a biodegradable film using a novel hybrid citrus peel pectin. A bilayer approach with PLA was proposed and optimized using Response Surface Methodology (RSM) to complement pectin films’ mechanical and barrier property limitations. The optimized film composition (2.90 g PLA and 1.96 g pectin) showed enhanced mechanical strength with a tensile strength (TS) of 7.04 MPa and an elongation at break (EAB) of 462.63%. In addition, it demonstrated lower water vapor (1.45 × 10−10 g/msPa), oxygen (2.79 × 10−7 g/ms) permeability, and solubility (23.53%). Compared to single-layer pectin films, the optimized bilayer film had a 25% increased thickness, significantly improved water barrier (3806 times lower) and oxygen barrier (3.68 times lower) properties, and 22.38 times higher stretchability, attributed to hydrogen bond formation, as confirmed by FTIR analysis. The bilayer film, effectively protected against UV and visible light, could be a barrier against light-induced lipid oxidation. Moreover, it demonstrated superior seal efficiency, ensuring secure sealing in practical applications. The bilayer pouch containing mustard dressing exhibited stable sealing with no leakage after immersion in hot water and ethanol, making it suitable for secure food pouch packaging.

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Development of cassava starch-based films incorporated with phenolic compounds produced by an Amazonian fungus

Cited by 2 publications

References 65 publications

Isolation and Identification of Pigment-Producing Endophytic Fungi from the Amazonian Species Fridericia chica

Isolation and Identification of Pigment-Producing Endophytic Fungi from the Amazonian Species Fridericia chica

Tailoring Pectin-PLA Bilayer Film for Optimal Properties as a Food Pouch Material

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