Valorization of lignocellulosic biomass for polyhydroxyalkanoate production: Status and perspectives

Sohn, Yu Jung; Son, Jina; Lim, Hye Jin; Lim, Seo Hyun; Park, Si Jae

doi:10.1016/j.biortech.2022.127575

Cited by 32 publications

(8 citation statements)

References 139 publications

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“…Even though the production of PHAs has attracted a lot of attention in recent years as ‘‘green plastics” [ 41 ], and its production market is increasing quickly, its high production cost is still a barrier to market expansion [ 1 ]. The utilization of bacteria that require controlled operation circumstances and special feedstock has made the production cost of PHA several times higher than that of conventional plastics [ 9 ].…”

Section: Production Of Phasmentioning

confidence: 99%

Production of Polyhydroxyalkanoates for Biodegradable Food Packaging Applications Using Haloferax mediterranei and Agrifood Wastes

Atarés,

Chiralt,

González-Martínez

et al. 2024

Foods

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Polyhydroxyalkanoates (PHAs) are high-value biodegradable polyesters with thermoplastic properties used in the manufacturing of different products such as packaging films. PHAs have gained much attention from researchers and industry because of their biobased nature and appropriate features, similar to conventional synthetic plastics. This review aims to discuss some of the recent solutions to challenges associated with PHA production. The implementation of a cost-effective process is presented by following different strategies, such as the use of inexpensive carbon sources, the selection of high-producing microorganisms, and the functionalization of the final materials to make them suitable for food packaging applications, among others. Research efforts are needed to improve the economic viability of PHA production at a large scale. Haloferax mediterranei is a promising producer of PHAs due to its ability to grow in non-sterile conditions and the possibility of using seawater to prepare the growth medium. Additionally, downstream processing for PHA extraction can be simplified by treating the H. mediterranei cells with pure water. Further research should focus on the optimization of the recycling conditions for the effluents and on the economic viability of the side streams reutilization and desalinization as an integrated part of PHA biotechnological production.

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Section: Production Of Phasmentioning

confidence: 99%

Production of Polyhydroxyalkanoates for Biodegradable Food Packaging Applications Using Haloferax mediterranei and Agrifood Wastes

Atarés,

Chiralt,

González-Martínez

et al. 2024

Foods

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“…It is exactly miscanthus for which no more examples of PHA production have been found; however, the topic of PHA production from other lignocellulosic sources has been under study for long, as described in the review paper by Govil et al [ 68 ] and Sohn et al [ 136 ]. If simply compared (i.e., conversion conditions are ignored), the concentrations of PHAs (g/L) derived from those sources and miscanthus allow for the conclusion that miscanthus is superior, for example, to wheat bran (0.319), pinus radiata wood (0.39) and rice straw (1.7), and is inferior to water hyacinth (4.3), bagasse (4.2), sunflower stalk (7.86) and oil palm empty fruit (12.48) [ 68 ].…”

Section: Biotechnology Productsmentioning

confidence: 99%

Recent Advances in Miscanthus Macromolecule Conversion: A Brief Overview

Mironova,

Budaeva,

Skiba

et al. 2023

IJMS

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Miscanthus is a valuable renewable feedstock and has a significant potential for the manufacture of diverse biotechnology products based on macromolecules such as cellulose, hemicelluloses and lignin. Herein, we overviewed the state-of-the art of research on the conversion of miscanthus polymers into biotechnology products comprising low-molecular compounds and macromolecules: bioethanol, biogas, bacterial cellulose, enzymes (cellulases, laccases), lactic acid, lipids, fumaric acid and polyhydroxyalkanoates. The present review aims to assess the potential of converting miscanthus polymers in order to develop sustainable technologies.

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“…Schematic representation of lignocellulose and its main components: cellulose, hemicellulose, and lignin which serve as inexpensive carbon sources for microbial PHA production. Adapted with permission from ref . Copyright 2022, Elsevier.…”

Section: Closed-loop Biomass-based Biorefinery Conceptmentioning

confidence: 99%

“…Metabolic pathways of conversion of fermentable sugars and lignin from lignocellulosic biomass: (a) metabolic pathway of fermentable sugars to PHAs, (b) metabolic pathway to lignin to PHAs: PhaA, β-ketothiolase; PhaB, acetoacetyl-CoA reductase; and PhaC, PHA synthase. Adapted with permission from refs , , : (a) Copyrights 2019 and 2022, Elsevier. (b) Copyright 2015, American Chemical Society.…”

Section: Metabolic Pathways For Conversion Of Cellulose Hemicellulose...mentioning

confidence: 99%

Valorization of Lignocellulose by Producing Polyhydroxyalkanoates under Circular Bioeconomy Premises: Facts and Challenges

Andhalkar

Ahorsu

Marı́a³

et al. 2022

ACS Sustainable Chem. Eng.

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In light of the current concerns about environmental issues caused by the excessive use of fossil resources, more emphasis has been paid to the transition to a sustainable and circular economy. Bioplastics as eco-friendly products originating from biomass wastes have gained much attention to solve the problem of plastic pollution. Among them, polyhydroxyalkanoates (PHAs) are microbial polyesters produced using various feedstocks�renewable or recycled waste materials�contributing to a more sustainable commercial plastic life cycle by being a part of a circular bioeconomy. However, the scale-up of the PHA process cost effectively and sustainably remains challenging for large-scale industrial applications. This perspective provides a comprehensive overview of the current insights into lignocellulosic biomass's role in achieving a circular bioeconomy. Emerging greener biomass conversion technologies are discussed to characterize energy demand, cost, and sustainability within biorefinery PHA production. In addition, recent advances in synthetic biology and fermentation processes for PHA production are discussed. Technological challenges, i.e., bioreactor setup, downstream operation, and inconsistent properties to improve the sustainable production of PHAs and to help transfer this technology to real-world applications, are also addressed.

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Valorization of lignocellulosic biomass for polyhydroxyalkanoate production: Status and perspectives

Cited by 32 publications

References 139 publications

Production of Polyhydroxyalkanoates for Biodegradable Food Packaging Applications Using Haloferax mediterranei and Agrifood Wastes

Production of Polyhydroxyalkanoates for Biodegradable Food Packaging Applications Using Haloferax mediterranei and Agrifood Wastes

Recent Advances in Miscanthus Macromolecule Conversion: A Brief Overview

Valorization of Lignocellulose by Producing Polyhydroxyalkanoates under Circular Bioeconomy Premises: Facts and Challenges

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