Degradation of a poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) compound in different environments

Lyshtva, Pavlo; Voronova, Viktoria; Barbir, Jelena; Leal Filho, Walter; Kröger, Silja Denise; Witt, Gesine; Miksch, Lukas; Saborowski, Reinhard; Gutow, Lars; Frank, Carina; Emmerstorfer-Augustin, Anita; Agustin-Salazar, Sarai; Cerruti, Pierfrancesco; Santagata, Gabriella; Stagnaro, Paola; D'Arrigo, Cristina; Vignolo, Maurizio; Krång, Anna-Sara; Strömberg, Emma; Lehtinen, Liisa; Annunen, Ville

doi:10.1016/j.heliyon.2024.e24770

Cited by 4 publications

(1 citation statement)

References 47 publications

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“…However, as PHBV is a biodegradable plastic, carrying out its biodegradation is preferable. Its biodegradability when released to the environment is slow and depends greatly on environmental conditions [119], but PHBV has been estimated to biodegrade in rivers [120], and the highest degradation is reached when in activated sludge [121] or compost [122,123]. PHBV-degrading bacteria have been isolated from soil, specifically Actinomadura sp.…”

Section: Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (Phbv)mentioning

confidence: 99%

Genetic Modifications in Bacteria for the Degradation of Synthetic Polymers: A Review

Martín-González,

de la Fuente Tagarro,

De Lucas

et al. 2024

IJMS

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Synthetic polymers, commonly known as plastics, are currently present in all aspects of our lives. Although they are useful, they present the problem of what to do with them after their lifespan. There are currently mechanical and chemical methods to treat plastics, but these are methods that, among other disadvantages, can be expensive in terms of energy or produce polluting gases. A more environmentally friendly alternative is recycling, although this practice is not widespread. Based on the practice of the so-called circular economy, many studies are focused on the biodegradation of these polymers by enzymes. Using enzymes is a harmless method that can also generate substances with high added value. Novel and enhanced plastic-degrading enzymes have been obtained by modifying the amino acid sequence of existing ones, especially on their active site, using a wide variety of genetic approaches. Currently, many studies focus on the common aim of achieving strains with greater hydrolytic activity toward a different range of plastic polymers. Although in most cases the depolymerization rate is improved, more research is required to develop effective biodegradation strategies for plastic recycling or upcycling. This review focuses on a compilation and discussion of the most important research outcomes carried out on microbial biotechnology to degrade and recycle plastics.

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Section: Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (Phbv)mentioning

confidence: 99%

Genetic Modifications in Bacteria for the Degradation of Synthetic Polymers: A Review

Martín-González,

de la Fuente Tagarro,

De Lucas

et al. 2024

IJMS

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Innovative biomaterials for food packaging: Unlocking the potential of polyhydroxyalkanoate (PHA) biopolymers

Yeo,

Muiruri,

Fei

et al. 2024

Biomaterials Advances

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Biodegradable and Transparent Water and Oxygen Barrier Multilayer Film

Macnamara,

Rubino,

Daum

et al. 2024

ACS Appl. Polym. Mater.

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Plastic waste remains a critical environmental challenge, with 14.5 million tons generated in 2018 alone, 85% of which ended up in landfills in the US. A key contributor to this issue is the nonrecyclability of multilayer laminations; when different materials are fused, they cannot be easily separated for recycling, thereby exacerbating municipal solid waste problems. This study explores an innovative approach by laminating base layers of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) or stereocomplex-polylactic acid with a biodegradable coating of poly(vinyl alcohol) and nanoclay to polylactic acid. Since all the materials are biodegradable, the final structure is also anticipated to be biodegradable in compost environments, opening an additional regenerative end-of-life scenario. The effectiveness of these biodegradable layers was assessed by measuring the moisture vapor transmission rate (MVTR) and oxygen transmission rates (OTR), which ranged from 20 to 30 g/(m2·d) and 54 to 69 cc/(m2·d), respectively. Through optimizing, theoretical rates were estimated at an MVTR of 10 g/(m2·d) at 38° and 90% RH and an OTR of 60 cc/(m2·d) at 23 °C and 50% RH, showcasing low permeability for several biodegradable products. Additionally, water barrier activation energy was measured across four selected structures, ranging from 41 to 58 kJ/mol, indicating that the developed material can potentially package several types of food products in a biodegradable formata significant advancement from previous compostable plastic structures and packaging industry capabilities.

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Degradation of a poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) compound in different environments

Cited by 4 publications

References 47 publications

Genetic Modifications in Bacteria for the Degradation of Synthetic Polymers: A Review

Genetic Modifications in Bacteria for the Degradation of Synthetic Polymers: A Review

Innovative biomaterials for food packaging: Unlocking the potential of polyhydroxyalkanoate (PHA) biopolymers

Biodegradable and Transparent Water and Oxygen Barrier Multilayer Film

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