Microbial and Enzymatic Degradation of Polymers: A Review

Costa, Carolina Zanon; Albuquerque, Marcos de C. C. de; Brum, Maria; Castro, Aline Machado de

doi:10.5935/0100-4042.20140293

Cited by 10 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This can be explained by the chemical composition of polymers, PHB contains in its structure carboxylic groups, which are hydrophilic. The HDPE, because it is formed by hydrophobic chemical groups, hinders the enzymatic action of microorganisms on the polymer surface [45] con rming what was presented by the analysis of the chemical structure of polymers by FTIR.…”

Section: Gravimetric Biodegradation Assayssupporting

confidence: 77%

Study of The Biodegradation of Poly (3- Hydroxybutyrate) (PHB) and High-Density Polyethylene (HDPE) by Microorganisms from the Sea waters of the Atlantic Coast of Brazil

Barreto

Silva

Filho

et al. 2021

Preprint

View full text Add to dashboard Cite

The objective of this study was to evaluate the biodegradation of Poly (hydroxybutyrate) (PHB) and high-density polyethylene (HDPE) in static systems, using as fluid the seawater of the Coastal Region of the State of Pernambuco (Brazil). The physical and chemical modifications of the polymers, as a function of biodegradation, were evaluated by Fourier transform infrared spectroscopy (FTIR), mechanical tensile assay, differential scanning calorimetry (DSC), gravimetric test, and microbiological analysis. Through the FTIR, it was possible to observe in the PHB a decrease of 23.22% in the carbonyl index for the crystalline phase and 32.30% in the amorphous phase after 180 days, which evidences the effect of the biodegradation present. The mechanical properties of PHB were altered with biodegradation, but the thermal properties remained. During the gravimetric tests, there was a reduction in mass and consequently higher degradation rates for PHB, which is corroborated by the microbiological tests of the system. All characterizations demonstrated that the surface of the HDPE is less susceptible to biofilm formation and, consequently, to the enzymatic action of microorganisms. After 180 days of immersion, no significant microbiological degradation was observed in the HDPE, except for some abiotic alterations.

show abstract

Section: Gravimetric Biodegradation Assayssupporting

confidence: 77%

Study of The Biodegradation of Poly (3- Hydroxybutyrate) (PHB) and High-Density Polyethylene (HDPE) by Microorganisms from the Sea waters of the Atlantic Coast of Brazil

Barreto

Silva

Filho

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The microbiota present in the soil produces several enzymes such as esterases, lipases, proteases, glycosidases, and phosphatases that are involved in bioprocesses. Also, enzymes of the class of oxidoreductases (monooxigenases), are known to degrading polymer chains by means of the incorporation of oxygen atoms . Information about the oxygenated carbon groups present at the PHBV and PHBV-AgNP surfaces were acquired from high-resolution C1s X-ray photoelectrons spectra (SI Figure S3).…”

Section: Resultsmentioning

confidence: 99%

“…Also, enzymes of the class of oxidoreductases (monooxigenases), are known to degrading polymer chains by means of the incorporation of oxygen atoms. 43 Information about the oxygenated carbon groups present at the PHBV and PHBV-AgNP surfaces were acquired from high-resolution C1s X-ray photoelectrons spectra (SI Figure S3). At these spectra, C−C, C−O, and COO bonds were fitted at 284.8, 286.8, and 289.2 eV, respectively.…”

Section: Environmental Science and Technologymentioning

confidence: 99%

The Positive Fate of Biochar Addition to Soil in the Degradation of PHBV-Silver Nanoparticle Composites

Gonçalves

Strauss

Martinez

2018

Environ. Sci. Technol.

View full text Add to dashboard Cite

The environmental contamination of soils by polymeric and nanomaterials is an increasing global concern. Polymeric composites containing silver nanoparticles (AgNP) are collectively one of the most important products of nanotechnology due to their remarkable antimicrobial activity. Biochars are a promising resource for environmental technologies for remediation of soils considering their high inorganic and organic pollutant adsorption capacity and microbial soil consortium stimulation. In this work we report, for the first time, the use of biochar material as a tool to accelerate the degradation of polyhydroxybutyrate-co-valerate (PHBV) and PHBV composites containing AgNP in a tropical soil system, under laboratory conditions. This positive effect is associated with microbial community improvement, which increased the degradation rate of the polymeric materials, as confirmed by integrated techniques for advanced materials characterization. The addition of 5–10% of sugarcane bagasse biochar into soil has increased the degradation of these polymeric materials 2 to 3 times after 30 days of soil incubation. However, the presence of silver nanoparticles in the PHBV significantly reduced the degradability potential of this nanocomposite by the soil microbial community. These results provide evidence that AgNP or Ag+ ions caused a decline in the total number of bacteria and fungi, which diminished the polymer degradation rate in soil. Finally, this work highlights the great potential of biochar resources for application in soil remediation technologies, such as polymeric (nano)material biodegradation.

show abstract

“…Both enzymes act synergistically so that xylans and hemicellulose mannans of some types of plant cell walls are depolymerized [42]. Nevertheless, some polymers are not biodegraded by common enzymatic hydrolysis, i.e., polymers can be oxidized by enzymes such as laccase, dioxygenase, peroxides, monooxygenase, and oxidases [43]. Thus, such enzymes are not hydrolases and influence the cleavage process of polymers differently from hydrolases (oxygen insertion, hydroxylation, oxidation, and free radical formation lead to polymer cleavage) [43].…”

Section: Biodegradation Processmentioning

confidence: 99%

Biodegradation of Hemicellulose-Cellulose-Starch-Based Bioplastics and Microbial Polyesters

2021

View full text Add to dashboard Cite

The volume of discarded solid wastes, especially plastic, which accumulates in large quantities in different environments, has substantially increased. Population growth and the consumption pattern of societies associated with unsustainable production routes have caused the pollution level to increase. Therefore, the development of materials that help mitigate the impacts of plastics is fundamental. However, bioplastics can result in a misunderstanding about their properties and environmental impacts, as well as incorrect management of their final disposition, from misidentifications and classifications. This chapter addresses the aspects and factors surrounding the biodegradation of bioplastics from natural (plant biomass (starch, lignin, cellulose, hemicellulose, and starch) and bacterial polyester polymers. Therefore, the biodegradation of bioplastics is a factor that must be studied, because due to the increase in the production of different bioplastics, they may present differences in the decomposition rates.

show abstract

Microbial and Enzymatic Degradation of Polymers: A Review

Cited by 10 publications

References 1 publication

Study of The Biodegradation of Poly (3- Hydroxybutyrate) (PHB) and High-Density Polyethylene (HDPE) by Microorganisms from the Sea waters of the Atlantic Coast of Brazil

Study of The Biodegradation of Poly (3- Hydroxybutyrate) (PHB) and High-Density Polyethylene (HDPE) by Microorganisms from the Sea waters of the Atlantic Coast of Brazil

The Positive Fate of Biochar Addition to Soil in the Degradation of PHBV-Silver Nanoparticle Composites

Biodegradation of Hemicellulose-Cellulose-Starch-Based Bioplastics and Microbial Polyesters

Contact Info

Product

Resources

About