The effect of pine cone lignin on mechanical, thermal and barrier properties of faba bean protein films for packaging applications

In the present work, faba bean protein (FBP) films plasticized with glycerol and reinforced different amounts (2.5, 5.0, 7.5 10% by weight of FBP) lignin extracted from pine cones (PL) have been obtained solution casting. The results showed an elongation at break 111.7% addition 5% PL to FBP film, which represents increase 107% compared control film. On other hand, it was observed thermogravimetric analysis (TGA) that incorporation improved thermal stability leading in degradation temperature, being this higher sample film PL. barrier properties were also affected presence lignin, a decrease water vapor permeability (WVP) comparison unreinforced show 2.5% had lowest WVP value, reduction 25% Chemical Fourier transform infrared spectroscopy (FTIR) confirmed formation intramolecular interactions between proteins which, together inherent hydrophobicity resulted moisture content This research work has allowed development biobased biodegradable attractive could be potential use sectors such as packaging.