Biopolymer hybrid materials: Development, characterization, and food packaging applications

Pinto, Loris; Bonifacio, Maria Addolorata; Giglio, Elvira De; Santovito, Elisa; Cometa, Stefania; Bevilacqua, Antonio; Baruzzi, Federico

doi:10.1016/j.fpsl.2021.100676

Cited by 77 publications

(40 citation statements)

References 101 publications

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“…Nanoclay, thanks to its lamellar structure, can also improve the strength properties and constitute a barrier to gas permeability in polymer nanocomposites [ 24 ]. These characteristics are the result of the molecular interactions among the biopolymer matrix and clay surface [ 25 ]. The improvement of the mechanical properties can occur through strong interactions between the polymer and MMT groups [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

“…These characteristics are the result of the molecular interactions among the biopolymer matrix and clay surface [ 25 ]. The improvement of the mechanical properties can occur through strong interactions between the polymer and MMT groups [ 25 , 26 ]. The authors of the study [ 27 ] used OMMT nanoplates and investigated the barrier properties of PLA.…”

Section: Introductionmentioning

confidence: 99%

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Study of Thermal, Mechanical and Barrier Properties of Biodegradable PLA/PBAT Films with Highly Oriented MMT

2021

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In order to improve the properties of biodegradable polylactide (PLA), mixtures with polybutylene adipate-co-terephthalate (PBAT) were prepared. PLA is a bio-based and renewable biodegradable material, made from starch. PBAT is a biodegradable polyester for compostable film. In order to improve the composite properties, two types of additives were implemented via melt mixing, a chain extender (CE) and montmorillonite (MMT). CE was used as an interfacial modifier to enhance the adhesion between components. Montmorillonite is a widely studied clay added to polymer nanocomposites. Due to the lamellar structure, it improves the barrier properties of materials. PLA/PBAT films were oriented in the extrusion process and the amounts of filler introduced into the PLA/PBAT nanocomposites were 1.0, 3.0, and 5.0%. The improvement in the PLA barrier properties by the addition of PBAT and 5% of MMT was confirmed as the oxygen permeability decreased almost by a factor of 3. The addition of the biodegradable polymer, chain extender, montmorillonite, and the implemented orientation process resulted in a decrease in composite viscosity and an increase in the PLA crystallinity percentage (up to 25%), and the wettability tests confirmed the synergic behavior of the selected polymer blend.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of Thermal, Mechanical and Barrier Properties of Biodegradable PLA/PBAT Films with Highly Oriented MMT

2021

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“…Taking all the research challenges into consideration, the novel idea of active food coatings composed of polysaccharides supplemented with natural essential oils, phenolics, and active nanoparticles has been an effective adjunct to conventional postharvest treatments of fresh fruits [10]. Because several polysaccharides have limited barrier and mechanical properties even after the addition of bioactive compounds, the inclusion of inorganic clays [11] or nanoparticles [12] has been proposed.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrocolloid-based coating forming solutions prepared from starches, pectin, alginate, carboxymethyl cellulose, and chitosan have been applied to delay ripening and prevent senescence or detachment of fruit skin during postharvest storage [15]. In addition to plasticizers, emulsifiers, surfactants, and hydrophobic materials, the use of inorganic clays [11] or nanoparticles [12] have also been proposed.…”

Section: Introductionmentioning

confidence: 99%

Polysaccharide-Based Active Coatings Incorporated with Bioactive Compounds for Reducing Postharvest Losses of Fresh Fruits

2021

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This review reports recently published research related to the application of polysaccharide-based biodegradable and edible coatings (BECs) fortified with bioactive compounds obtained from plant essential oils (EOs) and phenolic compounds of plant extracts. Combinations of polysaccharides such as starches, pectin, alginate, cellulose derivatives, and chitosan with active compounds obtained from clove, lemon, cinnamon, lavender, oregano, and peppermint have been documented as potential candidates for biologically active coating materials for retardation of quality changes in fresh fruits. Additionally, polysaccharide-based active coatings supplemented with plant extracts such as cashew leaves, pomegranate peel, red roselle, apple fiber, and green tea extracts rich in phenolic compounds and their derivatives have been reported to be excellent substituents to replace chemically formulated wax coatings. Moreover, EOs and plant polyphenolics including alcohols, aldehydes, ketones phenols, organic acids, terpenes, and esters contain hydroxyl functional groups that contribute bioactivity to BECs against oxidation and reduction of microbial load in fresh fruits. Therefore, BECs enriched with active compounds from EOs and plant extracts minimize physiological and microbial deterioration by reducing moisture loss, softening of flesh, ripening, and decay caused by pathogenic bacterial strains, mold, or yeast rots, respectively. As a result, shelf life of fresh fruits can be extended by employing active polysaccharide coatings supplemented with EOs and plant extracts prior to postharvest storage.

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“…Plastics are the most widely used material in food packaging, with more than 30% of worldwide production destined for this application. Global demand and the responsive production of plastic materials for food packaging has increased considerably over the last six decades and is expected to continue for the next 20 years [4,5]. Petroleum-based polymeric plastic materials such as polyvinylchloride (PVC), polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyamide (PA), polystyrene (PS) and ethylene vinyl alcohol (EVOH), are widely used in food packaging due to their good mechanical and barrier properties, low cost and high availability [6].…”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanofibers from Olive Tree Pruning as Food Packaging Additive of a Biodegradable Film

Sánchez-Gutiérrez

Bascón-Villegas

Espinosa

et al. 2021

Foods

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A biodegradable packaging film containing cellulose nanofibers from olive tree pruning, a by-product of olives production, was obtained using a solvent casting method. Nanocellulose was added to polyvinyl alcohol (PVA) to enhance the technological properties of the composite film as food packaging material. Nanocellulose was obtained from unbleached and bleached pulp through a mechanical and TEMPO pretreatment. Crystalline and chemical structure, surface microstructure, UV and gas barrier, optical, mechanical and antioxidant properties, as well as thermal stability were evaluated. Regarding optical properties, the UV barrier was increased from 6% for the pure PVA film to 50% and 24% for unbleached and bleached nanocellulose, respectively. The antioxidant capacity increased significantly in unbleached mechanical nanocellulose-films (5.3%) compared to pure PVA film (1.7%). In terms of mechanical properties, the tensile strength of the 5% unbleached mechanical nanocellulose films was significantly improved compared to the pure PVA film. Similarly, the 5% nanocellulose films had increased the thermal stability and improved barrier properties, reducing water vapor permeability by 38–59% and presenting an oxygen barrier comparable to aluminum layer and plastic films. Our results support the use of the developed films as a green alternative material for food packaging.

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Biopolymer hybrid materials: Development, characterization, and food packaging applications

Cited by 77 publications

References 101 publications

Study of Thermal, Mechanical and Barrier Properties of Biodegradable PLA/PBAT Films with Highly Oriented MMT

Study of Thermal, Mechanical and Barrier Properties of Biodegradable PLA/PBAT Films with Highly Oriented MMT

Polysaccharide-Based Active Coatings Incorporated with Bioactive Compounds for Reducing Postharvest Losses of Fresh Fruits

Cellulose Nanofibers from Olive Tree Pruning as Food Packaging Additive of a Biodegradable Film

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