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Erschienen in: Polymer Bulletin 8/2023

02.10.2022 | Original Paper

CMC-based edible coating composite films from Brewer's spent grain waste: a novel approach for the fresh strawberry package

verfasst von: Oznur Oztuna Taner, Lutfiye Ekici, Lalehan Akyuz

Erschienen in: Polymer Bulletin | Ausgabe 8/2023

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Abstract

This study points to the coated strawberry with new edible films originating from the components of Brewer's spent grain (BSG) obtained as a large amount of waste during brewing. The aim of this study was to measure the high protein, phenolic compounds and cellulose from the BSG waste, which is created as waste in the brewing and mostly used as animal feed, with a new approach to coating strawberries. Cellulose, protein and phenolic compounds were extracted from BSG which is high in these components. Carboxyl methylcellulose (CMC) was synthesized from the obtained cellulose to produce edible films incorporated with different concentrations of protein and phenolic compounds of BSG. The production of the films was characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron micrographs (SEM) and mechanical analysis and their antioxidant activities. Weight loss, titration acidity, pH, soluble solids and anthocyanin content were determined for uncoated and coated strawberries with each formulation. Total phenolic was observed to be 2.28 mg GAE/g, and the total protein amount in BSG was observed to be 26.81 g per 100 g dry weight. The results showed that the protein and phenolic compounds used in CMC benefited the CMC film-coated strawberry and could be used as a food packaging material in future. The appearance of composite film-coated strawberry was better than that of uncoated films at the end of the 5 days of storage at room temperature due to the protective properties of the film.

Graphical abstract

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Metadaten
Titel
CMC-based edible coating composite films from Brewer's spent grain waste: a novel approach for the fresh strawberry package
verfasst von
Oznur Oztuna Taner
Lutfiye Ekici
Lalehan Akyuz
Publikationsdatum
02.10.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 8/2023
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-022-04490-x

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