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Bitter vetch (Vicia ervilia) seed protein concentrate as possible source for production of bilayered films and biodegradable containers

The manufacture of biodegradable and renewable containers from bitter vetch seed protein-based

3 “bioplastics” was investigated. A bitter vetch seed protein concentrate was prepared and analyzed for

4 proteins, carbohydrates, phenols, other several organic compounds and multi-elements. Protein film

5 forming solutions were cast in the presence of two different glycerol concentrations and the film

6 containing higher plasticizer amount was laminated with an additional corn zein layer. Both

7 lamination process and lower glycerol concentration led to reduce film moisture content, total soluble

8 matter and elongation at break, while both film tensile strength and water vapour barrier properties

9 resulted enhanced. The obtained bioplastics were then processed by a new laboratory plastic moulding

10 equipment specifically designed and fabricated to convert protein-based films to shaped containers.

11 The use of either lower plasticizer concentration or corn zein lamination gave rise to potentially

12 satisfactory vacuum thermoformed containers with acceptable resistance and stability

Journal Papers

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