Recent trends in methane to bioproduct conversion by methanotrophs

Biotechnology Advances, Год журнала: 2021, Номер 53, С. 107861 - 107861

Опубликована: Окт. 25, 2021

Methane is an abundant and low-cost gas with high global warming potential its use as a feedstock can help mitigate climate change. Variety of valuable products be produced from methane by methanotrophs in fermentation processes. By using sole carbon source, methanotrophic bacteria produce bioplastics, biofuels, feed additives, ectoine variety other high-value chemical compounds. A lot studies have been conducted through the years for natural engineered strains well consortia. These focused on increasing yields native proof concept synthesis new range chemicals metabolic engineering. This review shows trends research key bioproducts since 2015. Despite certain limitations known production strategies that makes commercialization methane-based challenging, there currently much attention placed promising further development.

Язык: Английский

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Polyhydroxyalkanoate recovery overview: properties, characterizations, and extraction strategies

Chemosphere, Год журнала: 2024, Номер 356, С. 141950 - 141950

Опубликована: Апрель 8, 2024

Due to their excellent properties, polyhydroxyalkanoates are gaining increasing recognition in the biodegradable polymer market. These biogenic polyesters characterized by high biodegradability multiple environments, overcoming limitation of composting plants only and versatility production. The most consolidated techniques literature or reference legislation for physical, chemical mechanical characterisation final product reported since its usability on market is still linked quality, including certificate. This makes a promising prospect with potential replace fossil-based thermoplastics sustainably. review analyses compares properties poly-β-hydroxybutyrate poly-β-hydroxybutyrate-co-β-hydroxyvalerate, indicating current limitations strengths. In particular, copolymer characterised better performance terms crystallinity, hardness workability. However, knowledge this area infancy, selling prices too (9 18 $ kg-1). An analysis main extraction techniques, established development, also included. Solvent currently widely used method due efficiency quality. context, phase biopolymer production process remains major challenge costs need use non-halogenated toxic solvents improve good-quality bioplastics. discusses all fundamental parameters optimising process, such as solubility temperature.

Язык: Английский

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Production of poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from methane and volatile fatty acids: properties, metabolic routes and current trend

The Science of The Total Environment, Год журнала: 2024, Номер 927, С. 172138 - 172138

Опубликована: Апрель 4, 2024

Polyhydroxyalkanoates (PHAs) are biobased and biodegradable polymers that could effectively replace fossil-based non-biodegradable plastics. However, their production is currently limited by the high costs, mainly due to costly carbon sources used, low productivity quality of materials produced. A potential solution lies in utilizing cheap renewable as primary feedstock during biological PHAs, paving way for a completely sustainable economically viable process. In this review, opportunities challenges related polyhydroxyalkanoates using methane volatile fatty acids (VFAs) substrates were explored, with focus on poly(3-hydroxybutyrate) poly(3-hydroxybutyrate-co-3-hydroxyvalerate). The discussion reports current knowledge about promising Type II methanotrophs, impact process parameters such limiting nutrients, CH4:O2 ratio temperature, type co-substrate its concentration. Additionally, strategies developed until now enhance PHA yields also discussed.

Язык: Английский

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Advancements in the production of value-added products via methane biotransformation by methanotrophs: Current status and future perspectives

The Journal of Microbiology, Год журнала: 2025, Номер 63(3), С. e2412024 - e2412024

Опубликована: Март 28, 2025

Язык: Английский

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Biogas valorization via continuous polyhydroxybutyrate production by Methylocystis hirsuta in a bubble column bioreactor

Waste Management, Год журнала: 2020, Номер 113, С. 395 - 403

Опубликована: Июнь 22, 2020

Язык: Английский

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An innovative and sustainable process for producing poly(3-hydroxybutyrate-co-3-hydroxyvalerate): simulating volatile fatty acid role and biodegradability

Chemical Engineering Journal, Год журнала: 2023, Номер 473, С. 145193 - 145193

Опубликована: Авг. 6, 2023

Renewable resources, such as biogas and volatile fatty acids from organic substrate digestion, are used to generate the poly(3-hydroxybutyrate-co-3-hydroxyvalerate), a biopolymer with mechanical thermal characteristics comparable fossil fuel-based plastic. A double-stage fermentation was simulated for generating poly(3-hydroxybutyrate-co-3-hydroxyvalerate) analysing role of odd carbon on 3-hydroxyvalerate building block inclusion. Valeric acid then supplied at various concentrations 100–2000 ppm since it responsible highest 3-HV molar fraction accumulated. The recovery granules through non-halogenated extraction also simulated: methyl ethyl ketone employed solubilising granules, mixture methanol water (7:3) applied during precipitation stage. yields ranged 78% 96%, basing amount polymer entering line, i.e. 0.5 2.5 kg, content 40%mol 20%mol, respectively. lowest were finally theoretical assessment biodegradability: maximum weight loss 90% obtained containing fraction, thus confirming dependence biodegradability molecular structure.

Язык: Английский

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Assessing the performance of synthetic co-cultures during the conversion of methane into Poly(3-hydroxybutyrate)

Chemical Engineering Journal, Год журнала: 2023, Номер 476, С. 146646 - 146646

Опубликована: Окт. 14, 2023

Synthetic co-cultures can enhance pollutant bioconversion performance through synergistic effects among co-existing species. In this study, the potential of Methylocystis hirsuta and parvus to support poly(3-hydroxybutyrate) (PHB) production in co-cultivation with Rhodococcus opacus Pseudomonas putida under a CH4:O2 atmosphere was assessed batchwise. The metabolic activation almost all studied faster than that single strain cultures, bringing higher methane oxygen consumption rates. Higher PHB yields were achieved when coupling M. R. (63 % w w−1) or P. (64.4 compared alone (38.5 w−1). Interestingly, combination both reduced accumulation 42.2 w−1 content observed monocultures (62.2 M + (66.6

Язык: Английский

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Strategies for Biosynthesis of C1 Gas-derived Polyhydroxyalkanoates: A review

Bioresource Technology, Год журнала: 2021, Номер 344, С. 126307 - 126307

Опубликована: Ноя. 9, 2021

Язык: Английский

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The fundamental role of pH in CH4 bioconversion into polyhydroxybutyrate in mixed methanotrophic cultures

Chemosphere, Год журнала: 2024, Номер 355, С. 141832 - 141832

Опубликована: Апрель 1, 2024

Climate change and plastic pollution are likely the most relevant challenges for environment in 21st century. Developing cost-effective technologies bioconversion of methane (CH

Язык: Английский

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Exploring 1,3-Dioxolane Extraction of Poly(3-hydroxybutyrate) and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from Methylocystis hirsuta and Mixed Methanotrophic Strain: Effect of Biomass-to-Solvent Ratio and Extraction Time

Polymers, Год журнала: 2024, Номер 16(13), С. 1910 - 1910

Опубликована: Июль 4, 2024

The increasing need for biodegradable polymers demands efficient and environmentally friendly extraction methods. In this study, a simple sustainable method extracting polyhydroxybutyrate (PHB) poly(3-hydroxybutyrate-co-3-hydroxyvalerate (PHB-co-HV) from Methylocystis hirsuta mixed methanotrophic consortium with different biopolymer contents was presented. of biopolymers 1,3-dioxolane initially investigated by varying the biomass-to-solvent ratio (i.e., 1:2 w v−1, 1:4 1:6 1:8 v−1 1:10 v−1) time (6, 8 10 h) at boiling point solvent atmospheric pressure. Based on results preliminary tests, only most ratio, kinetics were also studied over interval ranging 30 min to 6 h. For hirsuta, investigation showed that maximum reached after min, recovery yields 87% 75% purities 98.7% 94% PHB PHB-co-HV, respectively. Similarly, PHB-co-HV strain yielded 88% w−1 70% recovery, respectively, 98% purity, in min.

Язык: Английский

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