Emerging technologies and sustainable strategies for municipal solid waste valorization: Challenges of circular economy implementation

Journal of Cleaner Production, Год журнала: 2023, Номер 423, С. 138708 - 138708

Опубликована: Сен. 6, 2023

Язык: Английский

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Current perspective in research and industrial applications of microbial cellulases

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 264, С. 130639 - 130639

Опубликована: Март 5, 2024

Язык: Английский

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Cellulosomal hemicellulases: Indispensable players for ensuring effective lignocellulose bioconversion

Green Carbon, Год журнала: 2024, Номер 2(1), С. 57 - 69

Опубликована: Янв. 15, 2024

The bioconversion of lignocellulose has attracted global attention, due to the significant potential agricultural and forestry wastes as renewable zero-carbon resources urgent need for substituting fossil carbon. cellulosome system is a multi-enzyme complex produced by anaerobic bacteria, which comprises cellulases, hemicellulases, associated enzymatic non-enzymatic components that promote biomass conversion. To enhance their efficiency in degrading recalcitrant lignocellulosic matrices, cellulosomes have been employed construct biocatalysts bioconversion, such consolidated bioprocessing bio-saccharification. Hemicelluloses, second most abundant polysaccharides plant cell walls, hold valuable application but can also induce inhibitory effects on cellulose hydrolysis, thus highlighting indispensable roles hemicellulases within complex. This review evaluated current research cellulosomal comparing types, abundance, regulation, primarily focusing eight known cellulosome-producing species different origins. We reviewed growth conditions, hemicellulose-degrading capabilities, hemicellulose cellulosome-based saccharification. Finally, we proposed strategies targeted enhancement hemicellulase improve future studies.

Язык: Английский

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Enzymatic Hydrolysis Strategies for Cellulosic Sugars Production to Obtain Bioethanol from Eucalyptus globulus Bark

Fermentation, Год журнала: 2023, Номер 9(3), С. 241 - 241

Опубликована: Март 2, 2023

Cellulosic sugars production for the valorization of lignocellulosic biomass residues in an industrial site has economic benefits and is promising if integrated into a biorefinery. Enzymatic hydrolysis (EH) pretreated Eucalyptus globulus bark, residue low-economic value widely available Portuguese pulp paper mills, could be excellent approach to attain resource circularity mill profitability. This work evaluated potential improving cellulosic concentrations by operating with high solids loading introducing additives Triton X-100, PEG 4000 Tween 80 using commercial enzymatic consortium dosage 25 FPU gcarbohydrates−1. Additives did not improve performance, but effect increasing 14% (w/v) batch operation was accomplished. The fed-batch strategy investigated and, when starting 11% loading, allowed feeding 3% fresh feedstock sequentially at 2, 4 6 h, attaining 20% total loading. After 24 h operation, concentration reached 161 g L−1, corresponding EH conversion efficiency 76%. Finally, fermentability hydrolysate Ethanol Red® strain 5 L bioreactor scale. present results demonstrate that previously kraft pulping, production, allowing it become raw material wide range bioprocesses.

Язык: Английский

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Current status and emerging frontiers in enzyme engineering: An industrial perspective

Heliyon, Год журнала: 2024, Номер 10(11), С. e32673 - e32673

Опубликована: Июнь 1, 2024

Язык: Английский

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Recent progress on sugarcane-bagasse based lactic acid production: Technical advancements, potential and limitations

Industrial Crops and Products, Год журнала: 2022, Номер 193, С. 116132 - 116132

Опубликована: Дек. 20, 2022

India is the largest producer of sugarcane in Asia and its sugar industry represents second agro-based industry. Sugarcane bagasse (SCB), a major waste from industries, indisputably lignocellulosic biomass (LCB) embedding ∼60 % carbohydrates, making it renewable source fermentable sugars. Despite unique chemical composition, SCB primarily used for co-generation. The enormous potential can be unleashed, if platform created using biochemical route. Sugars serve as feedstock fermentative production several fuels chemicals, considered key drivers rapid industrialization. US Department Energy has projected lactic acid (LA) one top biomass-derived chemicals owing to diverse applications multi-billion-dollar market. Currently, industrial LA predominated by microbial fermentation (∼90 %) which principally uses starchy or sugar-rich edible feedstocks. If low-cost manufacturing relying on LCB enabled, boon emerging economies like India, strategically strengthening their socio-economic status. present review showcases technical advances made exploiting route towards commercial realization with feedstock. It comprehensively discusses strategies developed area pretreatment, saccharification fermentation, bridging gap between lab-scale production. gives glimpse downstream processing SCB-derived LA, still nascent stage briefly talks about our perspective preferred choice scale-up "sugar industry" over other bio-based chemicals.

Язык: Английский

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Efficient production of lactic acid from cellulose and xylan in sugarcane bagasse by newly isolated Lactiplantibacillus plantarum and Levilactobacillus brevis through simultaneous saccharification and co-fermentation process

Heliyon, Год журнала: 2023, Номер 9(7), С. e17935 - e17935

Опубликована: Июль 1, 2023

Sugarcane bagasse is one of the promising lignocellulosic feedstocks for bio-based chemicals production. However, to date, most research focuses mainly on cellulose conversion process, while hemicellulose remains largely underutilized. The glucose and xylose derived from biomass can be a strategy improve utilization efficiencies resources, energy, water, at same time reduce wastes generated process. Here, attempts were made convert xylan in sugarcane (SB) into lactic acid (LA) through pre-hydrolysis simultaneous saccharification co-fermentation (SScF) process using newly isolated Lactiplantibacillus plantarum TSKKU P-8 Levilactobacillus brevis CHKKU N-6. yielded 91.9 g/L LA, with volumetric productivity 0.85 g/(L·h). This was equivalent 137.8 ± 3.4 g-LA, yield substrate (pretreated SB) 0.86 g/g, 1.28 g/h, based final volume 1.5 L. On other hand, fermentation (SSF) La. as monoculture gave 86.7 0.2 LA 0.8 g/(L·h), which 104.8 0.3 0.65 0.97 1.2 Mass balance calculated mass raw SB entering showed that SScF improved product by 32% compared SSF resulting 14% improvement medium-based economic yield.

Язык: Английский

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A Review of Liquid and Gaseous Biofuels from Advanced Microbial Fermentation Processes

Fermentation, Год журнала: 2023, Номер 9(9), С. 813 - 813

Опубликована: Сен. 6, 2023

Biofuels are the sustainable counterparts of fossil fuels to meet increasing energy demands current and future generations. produced from waste organic residues with application mechanical, thermochemical biological methods processes. While mechanical conversion processes involve use heat, pressure, catalysts other physicochemical attributes for direct biomass, requires microorganisms their enzymes as biocatalysts degrade fermentable substrates into biofuels biochemicals. This article highlights advances opportunities in technologies development a closed-loop biorefinery approach. review distinction between technologies, including discussion on pros cons pathways. Different categories processes, such enzymatic saccharification, submerged fermentation, solid-state fermentation simultaneous saccharification also discussed this article. The main essence is description different fermentative produce next-generation biofuels, bioethanol, biobutanol, biomethane, biohydrogen biodiesel. provides state-of-the-art literature technical perspective bioproduction acetone–ethanol–butanol anaerobic digestion, photo/dark transesterification lignocellulosic above-mentioned biofuels. In addition, recommendations improving bioprocessing efficiency biofuel yields provided comprehensive

Язык: Английский

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Surfactant-assisted ethylenediamine for the deconstruction and conversion of corn stover biomass

Bioresource Technology, Год журнала: 2023, Номер 382, С. 129174 - 129174

Опубликована: Май 15, 2023

Язык: Английский

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Key Takeaways on the Cost-Effective Production of Cellulosic Sugars at Large Scale

Processes, Год журнала: 2024, Номер 12(7), С. 1496 - 1496

Опубликована: Июль 17, 2024

The production of cellulosic sugars in lignocellulose biorefinery presents significant economic and environmental challenges due to the recalcitrant nature biomass. facile renewable with high yield productivity is pivotal for success biorefinery. are valorized either by biochemical routes or chemical hybrid (biological chemical) into chemicals, fuels, materials. This manuscript focuses on critical parameters affecting viability sugar at large scale, including biomass-specific pretreatment strategies enzyme cost efficiency. High costs, carbohydrate loss, inhibitors during identified as major contributors overall costs. To address these issues, we highlight importance developing cost-effective efficient methods tailored specific biomass types reuse recycling. Future research should focus innovations technologies, improved logistics high-density feedstocks, feeding systems, advancements technology enhance sustainability lignocellulosic biorefineries. findings need continued innovation optimization make commercial-scale more viable sustainable.

Язык: Английский

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