Present and Future of Biodegradable Polymers for Food Packaging Applications

Rydz, Joanna; Musioł, Marta; Zawidlak-Węgrzyńska, Barbara; Sikorska, Wanda

doi:10.1016/b978-0-12-811449-0.00014-1

Cited by 77 publications

(54 citation statements)

References 123 publications

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“…Current food packaging is mainly composed by petroleum-based polymeric materials which present certain disadvantages since, in addition to being synthesized from a non-renewable source, they are not biodegradable polymers, which demonstrates an important source of waste generation and accumulation [1]. Thus, environmental concerns and global awareness of material sustainability have resulted in a strong research interest in the development and use of biodegradable materials [2]. Specifically, poly(lactic acid) (PLA) has become the most commonly used environment-friendly bioplastic because it is commercially available, compostable, and can be processed by conventional melting extrusion.…”

Section: Introductionmentioning

confidence: 99%

Development of Bilayer Biodegradable Composites Containing Cellulose Nanocrystals with Antioxidant Properties

et al. 2019

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The interest in the development of novel biodegradable composites has increased over last years, and multilayer composites allow the design of materials with functionality and improved properties. In this work, bilayer structures based on a coated zein layer containing quercetin and cellulose nanocrystals (CNC) over an extruded poly(lactic acid) (PLA) layer were developed and characterized. Bilayer composites were successfully obtained and presented a total thickness of approx. 90 µm. The coated zein layer and quercetin gave a yellowish tone to the composites. The incorporation of the zein layer containing CNC decreased the volatile release rate during thermal degradation. Regarding to mechanical properties, bilayer composites presented lower brittleness and greater ductility evidenced by a lower Young’s modulus and higher elongation values. Water permeability values of bilayer composites greatly increased with humidity and the zein coated layer containing quercetin increased this effect. Experimental data of quercetin release kinetics from bilayer structures indicated a higher release for an alcoholic food system, and the incorporation of cellulose nanocrystals did not influence the quercetin diffusion process.

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Section: Introductionmentioning

confidence: 99%

Development of Bilayer Biodegradable Composites Containing Cellulose Nanocrystals with Antioxidant Properties

et al. 2019

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“…Cellulose type I is naturally synthesized in plants, in bacteria, and in algae, and by dissolving cellulose type I in an aqueous NaOH solution, cellulose type II can be produced. Cellulose type III is produced by treating cellulose type I, or cellulose type II, with liquid ammonia, while cellulose type IV is produced through the thermal procedure [ 5 , 8 , 11 ]. Among these types, cellulose type I is less stable thermodynamically when compared to cellulose type II, which is the type that is stable in nature [ 5 , 8 ].…”

Section: Cellulose Structurementioning

confidence: 99%

“…Bacterial cellulose (BC) can also be derived through the fermentation process [ 2 ], specifically, if the bacteria are aerobic bacteria [ 4 , 15 ]. BC is usually synthesized from bacteria that belong to the genera Gluconacetobacter [ 9 ], Agrobacterium , and Sarcina , through an oxidative fermentation process or by microbial fermentation [ 11 , 13 ], and when modified, BC will form a substance resembling a cartilage [ 16 , 17 ]. In contrast, aerobic Gram-negative bacteria belong to the genus Gluconacetobacter hansenii , and it has been proven to support and produce a greater amount of cellulose when cultured in a sugar-rich liquid medium [ 18 , 19 , 20 ].…”

Section: Bacterial Cellulosementioning

confidence: 99%

Plant- vs. Bacterial-Derived Cellulose for Wound Healing: A Review

Naomi

Idrus

Fauzi

2020

IJERPH

102

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Cellulose is a naturally existing element in the plant’s cell wall and in several bacteria. The unique characteristics of bacterial cellulose (BC), such as non-toxicity, biodegradability, hydrophilicity, and biocompatibility, together with the modifiable form of nanocellulose, or the integration with nanoparticles, such as nanosilver (AgNP), all for antibacterial effects, contributes to the extensive usage of BC in wound healing applications. Due to this, BC has gained much demand and attention for therapeutical usage over time, especially in the pharmaceutical industry when compared to plant cellulose (PC). This paper reviews the progress of related research based on in vitro, in vivo, and clinical trials, including the overall information concerning BC and PC production and its mechanisms in wound healing. The physicochemical differences between BC and PC have been clearly summarized in a comparison table. Meanwhile, the latest Food and Drug Administration (FDA) approved BC products in the biomedical field are thoroughly discussed with their applications. The paper concludes on the need for further investigations of BC in the future, in an attempt to make BC an essential wound dressing that has the ability to be marketable in the global marketplace.

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“…Os polímeros biodegradáveis vêm se destacando pelo potencial de substituir, em determinadas aplicações, os polímeros sintéticos e convencionais, derivados de fontes não renováveis, que são descartados incorretamente no meio ambiente, acarretando impactos ambientais e à saúde da população [1][2]. Dentre as inúmeras vantagens apresentadas pelos polímeros biodegradáveis existem algumas limitações no seu processamento, uma vez que degradam em altas temperaturas, e consequentemente interferem na sua aplicação como produto final, comparado aos polímeros convencionais [3][4].…”

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Influência de fatores ambientais nas propriedades mecânicas de biocompósitos de pla reforçado com fibra de coco e borra de café

Santos

Passador

Montagna³

2020

Tecno-log.

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________________________________________________________________________________________________________ RESUMOO desenvolvimento de biocompósitos poliméricos tem despertado tanto o interesse científico quanto industrial em desenvolver produtos ecologicamente corretos para diversas aplicações. Desta forma, este trabalho de pesquisa teve o intuito de desenvolver e caracterizar compósitos biodegradáveis de poli (ácido lático) (PLA), reforçado com diferentes porcentagens (5% e 15% m/m) de fibra de coco (FC) e borra de café (BC), sem tratamento superficial. Tanto a FC quanto a BC são popularmente tratadas como resíduos sólidos e apresentam grande potencial para serem utilizados como cargas naturais agindo como reforço e também como aceleradores da biodegradação em matrizes poliméricas para a obtenção de um material biodegradável. Os compósitos foram processados em um homogeneizador DRAIS seguido de prensagem a quente. As amostras foram caracterizadas pela análise visual (imagens macroscópicas) e medidas de ângulo de contato (goniômetro), bem como foram submetidas aos testes de absorção de água e envelhecimento em estufa, seguido do ensaio de resistência ao impacto Izod. Após, verificou-se absorção de água, perda de massa, análise visual, resistência mecânica ao impacto Izod e a caracterização morfológica por microscopia eletrônica de varredura (MEV) da superfície de fratura das amostras após ensaio mecânico. A partir dos resultados obtidos verificou-se a boa adesão entre as cargas naturais e a matriz de PLA, resultando em valores de resistência ao impacto próximo ao do PLA puro, porém os fatores ambientais influenciaram diretamente nessas propriedades mecânicas, tendo a umidade interferida na redução e no envelhecimento do leve acréscimo dos valores de resistência ao impacto.

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Present and Future of Biodegradable Polymers for Food Packaging Applications

Cited by 77 publications

References 123 publications

Development of Bilayer Biodegradable Composites Containing Cellulose Nanocrystals with Antioxidant Properties

Development of Bilayer Biodegradable Composites Containing Cellulose Nanocrystals with Antioxidant Properties

Plant- vs. Bacterial-Derived Cellulose for Wound Healing: A Review

Influência de fatores ambientais nas propriedades mecânicas de biocompósitos de pla reforçado com fibra de coco e borra de café

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