Lignocellulose dissociation with biological pretreatment towards the biochemical platform: A review

Wu, Zengyou; Peng, Kun; Zhang, Yin; Wang, Mei; Yong, Cheng; Ling, Chen; Qu, Ping; Huang, Hongying; Sun, Enhui; Pan, Mingzhu

doi:10.1016/j.mtbio.2022.100445

Cited by 45 publications

(15 citation statements)

References 155 publications

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“…The idea of a circular economy revolves around the goal of minimizing the negative environmental, social, and economic effects of waste materials. It encourages their revaluation, diminishes their creation, and offers direction for a more sustainable approach to their production. , The utilization of renewable resources, specifically lignocellulosic biomass from forestry and agricultural sectors, is now focused on promoting high-value-added materials instead of its previous primary use for generating renewable energy. − Lignocellulose is considered as a highly promising alternative to conventional carbon-containing sources for a wide range of applications. , Furthermore, it is abundantly available, renewable, entirely biodegradable, , and highly biocompatible. , …”

Section: Introductionmentioning

confidence: 99%

Self-Formation of Lignin Particles Through Melt-Extrusion for Active Biodegradable Food Packaging

Hararak,

Wijaranakul,

Wanmolee

et al. 2024

ACS Omega

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This study presents a method for the self-formation of lignin particles within a polylactic acid (PLA) matrix during melt-extrusion, eliminating the need for separation and drying steps typically associated with submicro-size lignin particles. This method effectively mitigates the problem of agglomeration often associated with the drying step. Softwood kraft lignin, guaiacyl lignin (GL-lignin), was dissolved in low-molecular-weight poly(ethylene glycol) (PEG) and was introduced into a twin-screw extruder using a liquid feeder. Lignin particles within a particle size range of 200–500 nm were observed in the extrudate of the PLA/PEG/GL-lignin composites. PLA/PEG/GL-lignin composite films were produced through blown film extrusion. These composite films demonstrated superior ultraviolet (UV)-barrier and antioxidant properties compared to neat PLA films, with optical and mechanical characteristics comparable to those of neat PLA. Moreover, migration values of the composite films in various food simulants were below regulatory limits, suggesting their potential for food packaging applications. This self-formation process offers a promising approach for utilizing lignin for PLA applications.

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Section: Introductionmentioning

confidence: 99%

Self-Formation of Lignin Particles Through Melt-Extrusion for Active Biodegradable Food Packaging

Hararak,

Wijaranakul,

Wanmolee

et al. 2024

ACS Omega

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“…Rather than employing the traditional "one-microbe-at-a-time" approach [14], an alternative strategy involves creating synthetic microbial communities (SynComs). In these communities, the synergy of different taxa may enhance the degradation rate of straw from various crop species [15].…”

Section: Introductionmentioning

confidence: 99%

Straw from Different Crop Species Recruits Different Communities of Lignocellulose-Degrading Microorganisms in Black Soil

Chang,

Guo,

Tang

et al. 2024

Microorganisms

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The biological degradation of plant residues in the soil or on the soil surface is an integral part of the natural life cycle of annual plants and does not have adverse effects on the environment. Crop straw is characterized by a complex structure and exhibits stability and resistance to rapid microbial decomposition. In this study, we conducted a microcosm experiment to investigate the dynamic succession of the soil microbial community and the functional characteristics associated with lignocellulose-degrading pathways. Additionally, we aimed to identify lignocellulose-degrading microorganisms from the straw of three crop species prevalent in Northeast China: soybean (Glycine max Merr.), rice (Oryza sativa L.), and maize (Zea mays L.). Our findings revealed that both the type of straw and the degradation time influenced the bacterial and fungal community structure and composition. Metagenome sequencing results demonstrated that during degradation, different straw types assembled carbohydrate-active enzymes (CAZymes) and KEGG pathways in distinct manners, contributing to lignocellulose and hemicellulose degradation. Furthermore, isolation of lignocellulose-degrading microbes yielded 59 bacterial and 14 fungal strains contributing to straw degradation, with fungi generally exhibiting superior lignocellulose-degrading enzyme production compared to bacteria. Experiments were conducted to assess the potential synergistic effects of synthetic microbial communities (SynComs) comprising both fungi and bacteria. These SynComs resulted in a straw weight loss of 42% at 15 days post-inoculation, representing a 22% increase compared to conditions without any SynComs. In summary, our study provides novel ecological insights into crop straw degradation by microbes.

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“…Lignin has a random polyaromatic structure. The heterogeneity in the molecular architecture of the material has made it infamously challenging to degrade 5,6 . Nonetheless there are some groups of enzymes which attack it, e.g ., laccases and peroxidases 7,8 .…”

Section: Introductionmentioning

confidence: 99%

Lycopene Production in Dedicated Novel Chasses for Lignocellulosic Waste Material Utilisation Capable of Sustained Coculture

Allan,

Crown,

Bashton

et al. 2023

Preprint

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Municipal solid waste (MSW) represents tonnes of material that, for the most part, is relegated to landfill. Synthetic biology proposes solutions to many of the challenges faced by humanity today, but many approaches are confined to use in classical chassis organisms. In MSW there are a variety of potentially toxic materials such as glues, dyes, and preservatives that could pose a challenge to its capitalisation when using these commonplace chassis. We have isolated a bank of strains that utilise paper and cardboard waste from a relevant waste environment. From these we have identified three strains that are capable of utilising cellulose as a sole carbon source. We have analysed how they utilise cellulose and hemicelluloses, both alone and in coculture. This revealed insights to how they might be used in synthetic consortia which were then produced under laboratory conditions. Production of complete genome sequences of these strains provides genetic insight to how these processes may be occurring at the metabolic level, and how they could be augmented using synthetic biology. To this end, we have produced protocols for transforming plasmids into these strains and have produced high value metabolites from this material.

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Lignocellulose dissociation with biological pretreatment towards the biochemical platform: A review

Cited by 45 publications

References 155 publications

Self-Formation of Lignin Particles Through Melt-Extrusion for Active Biodegradable Food Packaging

Self-Formation of Lignin Particles Through Melt-Extrusion for Active Biodegradable Food Packaging

Straw from Different Crop Species Recruits Different Communities of Lignocellulose-Degrading Microorganisms in Black Soil

Lycopene Production in Dedicated Novel Chasses for Lignocellulosic Waste Material Utilisation Capable of Sustained Coculture

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