Development and Characterization of Monolayers and Multilayers Based on Biodegradable Materials Derived from Waste and By-Products of Interest in Food Packaging

Abstract

General and specific objectives…………………………………….….…….53 III. Results……………………………………………………….….56 Block I: Development of interlayers based on polymeric fibers by electrospinning………………………………………………………………….….62 Chapter I: Preparation and characterization of electrospun food biopackaging films of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) derived from fruit pulp biowaste……………………………………………………………………………..64 Chapter II: Valorization of municipal biowaste into electrospun poly(3hydroxybutyrate-co-3-hydroxyvalerate) biopapers for food packaging applications………………………………………………………………………….94 Chapter III: Development and characterization of electrospun biopapers of poly(3hydroxybutyrate-co-3-hydroxyvalerate) derived from cheese whey with varying 3-hydroxyvalerate contents…………………………………………………….…..125 Chapter IV: Electrospun antimicrobial films of poly(3-hydroxybutyrate-co-3hydroxyvalerate) containing eugenol essential oil encapsulated in mesoporous silica nanoparticles……………………………………………………………………….164 Chapter V: Development and characterization of electrospun fiber-based poly(ethylene-co-vinyl alcohol) films of application interest as high-gas-barrier interlayers in food packaging…………………………………………………...… 195 Block II: Development of PHA-based structural layers by melt compounding……………………………………………………………………...234 Chapter VI: Reactive melt mixing of poly(3-hydroxybutyrate)/rice husk flour composites with purified biosustainably produced poly(3-hydroxybutyrate-co-3hydroxyvalerate)…………………………………………………………………...236 Chapter VII: Blends of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with fruit pulp biowaste derived poly(3-hydroxybutyrate-co-3-hydroxyvalerate-co-3hydroxyhexanoate) for organic recycling food packaging……………………………………………………………………….….266 Block III: Development of barrier multilayer systems based on PHA…………………………………………………………………………….….295 Chapter VIII: Barrier biopaper multilayers obtained by impregnation of electrospun poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with protein and polysaccharide hydrocolloids………………………………………………………………………297 Chapter IX: High-oxygen-barrier multilayer films based on polyhydroxyalkanoates and cellulose nanocrystals………………………………………………………….320 IV. General discussion…………………………………………….342 General discussion………………………………………………………….344 References………………………………………………………………….350 Overall impact of research activities………………………………….……351