From trash to cash: current strategies for bio-upcycling of recaptured monomeric building blocks from poly(ethylene terephthalate) (PET) waste

Carniel, Adriano; Ferreira dos Santos, Nathália; Buarque, Filipe Smith; Mendes Resende, João Victor; Ribeiro, Bernardo Dias; Marrucho, Isabel M.; Coelho, Maria Alice Zarur; Castro, Aline M.

doi:10.1039/d4gc00528g

Green Chem.

2024

DOI: 10.1039/d4gc00528g

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From trash to cash: current strategies for bio-upcycling of recaptured monomeric building blocks from poly(ethylene terephthalate) (PET) waste

Adriano Carniel,

Nathália Ferreira dos Santos,

Filipe Smith Buarque

et al.

Abstract: Bio-upcycling of monomers recovered from poly(ethylene terephthalate) (PET) waste is a novel alternative to turn recycling process more economically attractive by obtaining several products with higher added value.

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Cited by 2 publications

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Exploring yeast biodiversity and process conditions for optimizing ethylene glycol conversion into glycolic acid

Senatore,

Milanesi,

Masotti

et al. 2024

FEMS Yeast Research

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Plastics have become an indispensable material in many fields of human activities, with production increasing every year; however, most of the plastic waste is still incinerated or landfilled, and only 10% of the new plastic is recycled even once. Among all plastics, polyethylene terephthalate (PET) is the most produced polyester worldwide; ethylene glycol (EG) is one of the two monomers released by the biorecycling of PET. While most research focuses on bacterial EG metabolism, this work reports the ability of Saccharomyces cerevisiae and nine other common laboratory yeast species not only to consume EG, but also to produce glycolic acid (GA) as the main by-product. A two-step bioconversion of EG to GA by S. cerevisiae was optimized by a design of experiment approach, obtaining 4.51 ± 0.12 g L−1 of GA with a conversion of 94.25 ± 1.74% from 6.21 ± 0.04 g L−1 EG. To improve the titer, screening of yeast biodiversity identified Scheffersomyces stipitis as the best GA producer, obtaining 23.79 ± 1.19 g L−1 of GA (yield 76.68%) in bioreactor fermentation, with a single-step bioprocess. Our findings contribute in laying the ground for EG up-cycling strategies with yeasts.

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Exploring yeast biodiversity and process conditions for optimizing ethylene glycol conversion into glycolic acid

Senatore,

Milanesi,

Masotti

et al. 2024

FEMS Yeast Research

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Innovations in Food Packaging: From Bio-Based Materials to Smart Packaging Systems

D’Almeida,

de Albuquerque

2024

Processes

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This review highlights recent innovations in food packaging, emphasizing the shift from conventional petroleum-based materials to bio-based alternatives and smart packaging systems. Bio-based materials, such as starch, cellulose, and polyhydroxyalkanoates (PHA), offer sustainable solutions due to their biodegradability and reduced environmental impact. These materials are positioned as eco-friendly alternatives to traditional plastics but face challenges related to production costs and scalability. Additionally, advancements in smart packaging technologies, including sensor and indicator systems, provide real-time food quality monitoring, enhancing food safety and reducing waste. Active packaging technologies, incorporating natural antioxidants and moisture control, extend product shelf life and improve food preservation. Furthermore, these biopolymers typically present a lower CO2 footprint, energy costs, and water consumption during production, compared to traditionally used synthetic plastics. The review identifies challenges, such as regulatory barriers and technological limitations, but also outlines significant opportunities for future research and innovation in the food packaging sector, aiming for more efficient, safer, and environmentally sustainable packaging solutions.

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From trash to cash: current strategies for bio-upcycling of recaptured monomeric building blocks from poly(ethylene terephthalate) (PET) waste

Abstract: Bio-upcycling of monomers recovered from poly(ethylene terephthalate) (PET) waste is a novel alternative to turn recycling process more economically attractive by obtaining several products with higher added value.

Cited by 2 publications

References 260 publications

Exploring yeast biodiversity and process conditions for optimizing ethylene glycol conversion into glycolic acid

Exploring yeast biodiversity and process conditions for optimizing ethylene glycol conversion into glycolic acid

Innovations in Food Packaging: From Bio-Based Materials to Smart Packaging Systems

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