Polymers and the Environment: Some Current Feature Trends

García‐Martínez, Jesús María

doi:10.3390/polym15092093

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…Under the same conditions, the storage root of the De dix-huit jours radish was stimulated to grow (more than 10% increase). Certain bio-based plastics were found to suppress root growth while promoting shoot growth in dicotyledonous plants [41]. A clear stimulation of the Saxa 2 variety was evident under the influence of composite Nos.…”

Section: Phytotoxicity Studiesmentioning

confidence: 98%

Effect of Waste Cooking Oil-Based Composite Materials on Radish Growth and Biochemical Responses

Staroń,

Ciuruś,

Kijania-Kontak

2023

Materials

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Waste cooking oil poses a serious threat to human health and the environment, both in households and in larger communities. One of the applications of waste cooking oil is composite materials called vegeblocks, which can be used for construction purposes. These composites are formed by the process of polymerisation, esterification and polyesterification. The resulting materials exhibit mechanical strength in line with the requirements for paving blocks. Composite materials that have been annealed for a minimum of 20 h at 200 °C or higher have the highest tensile strength (above 5 MPa). In contrast, composites with the highest flexural strength were obtained after processing at 210 °C for 16 h. The Saxa 2 variety showed the greatest inhibition of storage root growth (almost 43% compared to the control sample), as well as stimulation of root and leaf blade growth (by a maximum of 61.5% and 53.5%, respectively, compared to the control sample). The composite obtained from the maximum process parameters resulted in significant growth of both the root and the green part of both radish varieties by up to 35%. The study showed that the presence of vegeblocks in the plants causes stress conditions, resulting in increased peroxidase content compared to the control sample. The presence of the oil composite in the soil did not increase the amount of catalase in the radish, and even a reduction was observed compared to the control sample.

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Section: Phytotoxicity Studiesmentioning

confidence: 98%

Effect of Waste Cooking Oil-Based Composite Materials on Radish Growth and Biochemical Responses

Staroń,

Ciuruś,

Kijania-Kontak

2023

Materials

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“…Among them, polyethylene terephthalate (PET) is the most widely used synthetic polyester plastic, especially in the packaging industry. However, with the increasing consumption, a remarkable part of plastics is accumulated in landfills and the natural environment as plastic waste ( García-Martínez and Collar, 2023 ; Kwon, 2023 ). Only 9% of all plastics ever produced were estimated to be recycled and 12% were incinerated ( Tiso et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Current advances in the structural biology and molecular engineering of PETase

Liu,

Wang,

Yang

et al. 2023

Front. Bioeng. Biotechnol.

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Poly(ethylene terephthalate) (PET) is a highly useful synthetic polyester plastic that is widely used in daily life. However, the increase in postconsumer PET as plastic waste that is recalcitrant to biodegradation in landfills and the natural environment has raised worldwide concern. Currently, traditional PET recycling processes with thermomechanical or chemical methods also result in the deterioration of the mechanical properties of PET. Therefore, it is urgent to develop more efficient and green strategies to address this problem. Recently, a novel mesophilic PET-degrading enzyme (IsPETase) from Ideonella sakaiensis was found to streamline PET biodegradation at 30°C, albeit with a lower PET-degrading activity than chitinase or chitinase-like PET-degrading enzymes. Consequently, the molecular engineering of more efficient PETases is still required for further industrial applications. This review details current knowledge on IsPETase, MHETase, and IsPETase-like hydrolases, including the structures, ligand‒protein interactions, and rational protein engineering for improved PET-degrading performance. In particular, applications of the engineered catalysts are highlighted, including metabolic engineering of the cell factories, enzyme immobilization or cell surface display. The information is expected to provide novel insights for the biodegradation of complex polymers.

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Isothermal crystallization of polyethylene droplets within the self-nucleated isotactic polypropylene matrix of a 70/30 iPP/PE immiscible blend via fast scanning chip calorimetry (FSC)

Scoppio,

Coba-Daza,

Cavallo

et al. 2024

Polymer

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Polymers and the Environment: Some Current Feature Trends

Abstract: In the early 1980s, the first global environmental crisis occurred with an emphasis on the role of plastics in big cities’ massive solid waste streams [...]

Cited by 4 publications

References 11 publications

Effect of Waste Cooking Oil-Based Composite Materials on Radish Growth and Biochemical Responses

Effect of Waste Cooking Oil-Based Composite Materials on Radish Growth and Biochemical Responses

Current advances in the structural biology and molecular engineering of PETase

Isothermal crystallization of polyethylene droplets within the self-nucleated isotactic polypropylene matrix of a 70/30 iPP/PE immiscible blend via fast scanning chip calorimetry (FSC)

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