Malt bagasse in extruded wheat flour and PBAT biodegradable films

Malt bagasse (BM) is a byproduct of the brewing industry with low added value but is rich in fiber and proteins, making it a potential product to be incorporated into the formulation of biodegradable films. This work aimed to produce biodegradable films based on wheat flour and PBAT added with diffe...

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Bibliographic Details
Published inIndustrial crops and products Vol. 220; p. 119274
Main Authors Silva, Isabella Cristina Santos, da Silva, Paula Juliana, de Carvalho, Fabiola Azanha, da Silva, Samuel Camilo, Yamashita, Fabio, Mendes, Ane Louise Dionisio, Goto, Caroline Arisa, Bosco, Tatiane Cristina Dal, Balan, Geane Cristiane, Shirai, Marianne Ayumi
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.11.2024
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Summary:Malt bagasse (BM) is a byproduct of the brewing industry with low added value but is rich in fiber and proteins, making it a potential product to be incorporated into the formulation of biodegradable films. This work aimed to produce biodegradable films based on wheat flour and PBAT added with different concentrations of BM (0 – 7.5 %) by blown extrusion. The films were characterized by physical, optical, morphological, thermal properties, and compostability. It was possible to produce biodegradable films by blown extrusion with excellent processability. BM increased film opacity with a heterogeneous, rough, and yellowish surface. Also, BM addition in the films reduced their hydrophilicity; however, as the BM concentration increased, there was a reduction in the elongation at break, tensile strength, and thermal stability of the films. The film with 7.5 % BM showed greater fragmentation and mass loss during the composting process, possibly due to the fragile matrix that facilitated the action and degradation by microorganisms. The biodegradable films containing BM are viable alternative for packaging production for different products. •Biodegradable films with malt bagasse were successfully prepared by extrusion.•Malt bagasse reduced the hydrophilicity of the films.•Malt bagasse improved the compostability of the films.•Biodegradable films with potential in the production of packaging.
ISSN:0926-6690
DOI:10.1016/j.indcrop.2024.119274