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  1. AU="O'Flaherty, Vincent"
  2. AU="Jérémie, Riou"
  3. AU="Ma, Yunshu"
  4. AU="Pu, Junyi"
  5. AU="Benlloch, Sara"
  6. AU="Jay D Evans"
  7. AU=Unger Jean-Pierre
  8. AU="Soday, Lior"
  9. AU="Wan, Xuan"
  10. AU="Camille Fritzell"
  11. AU=Wei Huijun
  12. AU="Levine, Morgan E"
  13. AU="Chen, Yalei"
  14. AU="Rogaeva, Ekaterina" AU="Rogaeva, Ekaterina"
  15. AU="Jain, Ishaan"
  16. AU="Chatelier, Josh"
  17. AU="Passarelli, L."
  18. AU="Marques, R"
  19. AU="Restaino, Valeria"
  20. AU="Wang, Haochen"
  21. AU=Shoib Sheikh
  22. AU=Patel Ishan
  23. AU="Mongioì, Laura M"
  24. AU="Fernández-Pacheco, Borja Camacho"
  25. AU=Waghmare Alpana AU=Waghmare Alpana
  26. AU="Peyre, Marion"
  27. AU=Mulazimoglu L
  28. AU=Roy Satyaki
  29. AU="Li Yuanyuan"
  30. AU=Khan Shehryar
  31. AU=Cole Sarah L
  32. AU="Júnior, Raimundo Nonato Colares Camargo"
  33. AU="Feeney, Judith A"

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  1. Artikel ; Online: How temperature shapes the biosynthesis of polyhydroxyalkanoates in mixed microbial cultures.

    Palmeiro-Sánchez, Tania / Graham, Alison / Lens, Piet / O'Flaherty, Vincent

    Water environment research : a research publication of the Water Environment Federation

    2023  Band 95, Heft 11, Seite(n) e10934

    Abstract: Three sequential batch reactors were operated for the enrichment in microbial communities able to store polyhydroxyalkanoates (PHAs) using activated sludge as inoculum. They ran simultaneously under the same operational conditions (organic loading rate, ... ...

    Abstract Three sequential batch reactors were operated for the enrichment in microbial communities able to store polyhydroxyalkanoates (PHAs) using activated sludge as inoculum. They ran simultaneously under the same operational conditions (organic loading rate, hydraulic and solids retention time, cycle length, C/N ratio) just with the solely difference of the working temperature: psychrophilic (15°C), mesophilic (30°C), and thermophilic (48°C). The microbial communities enriched showed different behaviors in terms of consumption and production rates. In terms of PHA accumulation, the psychrophilic community was able to accumulate an average amount of 17.7 ± 5.7 wt% poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), the mesophilic 40.3 ± 7.0 wt% PHBV, and the thermophilic 14.8 ± 0.3 wt% PHBV in dry weight over total solids. The average PHBV production yields for each selected community were 0.41 ± 0.12 Cmmol
    Mesh-Begriff(e) Polyhydroxyalkanoates ; Temperature ; Hydroxybutyrates ; Bioreactors
    Chemische Substanzen Polyhydroxyalkanoates ; Hydroxybutyrates
    Sprache Englisch
    Erscheinungsdatum 2023-10-14
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 1098976-6
    ISSN 1554-7531 ; 1047-7624 ; 1061-4303
    ISSN (online) 1554-7531
    ISSN 1047-7624 ; 1061-4303
    DOI 10.1002/wer.10934
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Polyhydroxyalkanoate bio-production and its rise as biomaterial of the future.

    Palmeiro-Sánchez, Tania / O'Flaherty, Vincent / Lens, Piet N L

    Journal of biotechnology

    2022  Band 348, Seite(n) 10–25

    Abstract: The first observation of a polyhydroxyalkanoate (PHA) aggregate was in 1888 by Beijenrinck. Despite polyhydroxybutyrate (PHB) being the first type of PHA discovered, it was not extracted and characterized until 1925 by Maurice Lemoigne in France, even ... ...

    Abstract The first observation of a polyhydroxyalkanoate (PHA) aggregate was in 1888 by Beijenrinck. Despite polyhydroxybutyrate (PHB) being the first type of PHA discovered, it was not extracted and characterized until 1925 by Maurice Lemoigne in France, even before the concept of "macromolecules" was known. After more than 30 years, in 1958, Wilkinson and co-workers rediscovered PHB and its metabolic role in the cells as storage compound. PHB started to be appealing to the industry in the 1980s, when a few companies started to commercialize microbially produced PHAs. During the 1990 s, the focus was on reducing production costs to make PHA production economically feasible, for instance by genetically modified microorganisms and even plants. Since then, many advances have been made: diverse wastes as feedstock, different production processes, and tailored design of biopolymers. This paper summarizes the scientific and technological development of PHAs from their discovery in 1888 until their latest applications and current commercial uses. Future perspectives have been devised too based on the current bottlenecks.
    Mesh-Begriff(e) Biocompatible Materials ; Biopolymers ; Humans ; Polyhydroxyalkanoates/metabolism
    Chemische Substanzen Biocompatible Materials ; Biopolymers ; Polyhydroxyalkanoates
    Sprache Englisch
    Erscheinungsdatum 2022-03-14
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article ; Review
    ZDB-ID 843647-2
    ISSN 1873-4863 ; 0168-1656 ; 1389-0352
    ISSN (online) 1873-4863
    ISSN 0168-1656 ; 1389-0352
    DOI 10.1016/j.jbiotec.2022.03.001
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Novel oxidising feed additives reduce in vitro methane emissions using the rumen simulation technique.

    O'Donnell, Caroline / Thorn, Camilla / Roskam, Emily / Friel, Ruairi / Kirwan, Stuart F / Waters, Sinéad M / O'Flaherty, Vincent

    The Science of the total environment

    2024  Band 926, Seite(n) 171808

    Abstract: Enteric methane ( ... ...

    Abstract Enteric methane (CH
    Mesh-Begriff(e) Animals ; Female ; Rumen ; Propionates/metabolism ; Methane/metabolism ; Magnesium Oxide/metabolism ; Diet ; Silage/analysis ; Ruminants ; Acetates/metabolism ; Oxygen/metabolism ; Animal Feed/analysis ; Fermentation ; Digestion ; Lactation
    Chemische Substanzen Propionates ; Methane (OP0UW79H66) ; Magnesium Oxide (3A3U0GI71G) ; Acetates ; Oxygen (S88TT14065)
    Sprache Englisch
    Erscheinungsdatum 2024-03-19
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.171808
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel: Current Trends in Biological Valorization of Waste-Derived Biomass: The Critical Role of VFAs to Fuel A Biorefinery

    Nzeteu, Corine / Coelho, Fabiana / Davis, Emily / Trego, Anna / O’Flaherty, Vincent

    Fermentation. 2022 Sept. 07, v. 8, no. 9

    2022  

    Abstract: The looming climate and energy crises, exacerbated by increased waste generation, are driving research and development of sustainable resource management systems. Research suggests that organic materials, such as food waste, grass, and manure, have ... ...

    Abstract The looming climate and energy crises, exacerbated by increased waste generation, are driving research and development of sustainable resource management systems. Research suggests that organic materials, such as food waste, grass, and manure, have potential for biotransformation into a range of products, including: high-value volatile fatty acids (VFAs); various carboxylic acids; bioenergy; and bioplastics. Valorizing these organic residues would additionally reduce the increasing burden on waste management systems. Here, we review the valorization potential of various sustainably sourced feedstocks, particularly food wastes and agricultural and animal residues. Such feedstocks are often micro-organism-rich and well-suited to mixed culture fermentations. Additionally, we touch on the technologies, mainly biological systems including anaerobic digestion, that are being developed for this purpose. In particular, we provide a synthesis of VFA recovery techniques, which remain a significant technological barrier. Furthermore, we highlight a range of challenges and opportunities which will continue to drive research and discovery within the field. Analysis of the literature reveals growing interest in the development of a circular bioeconomy, built upon a biorefinery framework, which utilizes biogenic VFAs for chemical, material, and energy applications.
    Schlagwörter anaerobic digestion ; animals ; bioeconomics ; bioenergy ; biomass ; bioplastics ; biorefining ; biotransformation ; climate ; energy ; feedstocks ; fermentation ; food waste ; grasses ; mixed culture ; research and development ; resource management ; waste management
    Sprache Englisch
    Erscheinungsverlauf 2022-0907
    Erscheinungsort Multidisciplinary Digital Publishing Institute
    Dokumenttyp Artikel
    ZDB-ID 2813985-9
    ISSN 2311-5637
    ISSN 2311-5637
    DOI 10.3390/fermentation8090445
    Datenquelle NAL Katalog (AGRICOLA)

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  5. Artikel: Polyhydroxyalkanoate bio-production and its rise as biomaterial of the future

    Palmeiro-Sánchez, Tania / O’Flaherty, Vincent / Lens, Piet N.L.

    Journal of biotechnology. 2022 Mar. 20, v. 348

    2022  

    Abstract: The first observation of a polyhydroxyalkanoate (PHA) aggregate was in 1888 by Beijenrinck. Despite polyhydroxybutyrate (PHB) being the first type of PHA discovered, it was not extracted and characterized until 1925 by Maurice Lemoigne in France, even ... ...

    Abstract The first observation of a polyhydroxyalkanoate (PHA) aggregate was in 1888 by Beijenrinck. Despite polyhydroxybutyrate (PHB) being the first type of PHA discovered, it was not extracted and characterized until 1925 by Maurice Lemoigne in France, even before the concept of “macromolecules” was known. After more than 30 years, in 1958, Wilkinson and co-workers rediscovered PHB and its metabolic role in the cells as storage compound. PHB started to be appealing to the industry in the 1980s, when a few companies started to commercialize microbially produced PHAs. During the 1990 s, the focus was on reducing production costs to make PHA production economically feasible, for instance by genetically modified microorganisms and even plants. Since then, many advances have been made: diverse wastes as feedstock, different production processes, and tailored design of biopolymers. This paper summarizes the scientific and technological development of PHAs from their discovery in 1888 until their latest applications and current commercial uses. Future perspectives have been devised too based on the current bottlenecks.
    Schlagwörter biocompatible materials ; biotechnology ; economic feasibility ; feedstocks ; industry ; polyhydroxybutyrate ; France
    Sprache Englisch
    Erscheinungsverlauf 2022-0320
    Umfang p. 10-25.
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel
    ZDB-ID 843647-2
    ISSN 1873-4863 ; 0168-1656 ; 1389-0352
    ISSN (online) 1873-4863
    ISSN 0168-1656 ; 1389-0352
    DOI 10.1016/j.jbiotec.2022.03.001
    Datenquelle NAL Katalog (AGRICOLA)

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  6. Artikel: Novel slurry additive reduces gaseous emissions during storage thereby improving renewable energy and fertiliser potential

    Thorn, Camilla E. / Nolan, Stephen / Lee, Chui Sang / Friel, Ruairi / O'Flaherty, Vincent

    Journal of cleaner production. 2022 July 15, v. 358

    2022  

    Abstract: Gaseous emissions from stored livestock manures and slurries are a significant source of greenhouse gases (GHG) and ammonia, accounting for more than 10% of all agricultural emissions in the US and EU. Nitrogen and carbon losses from these emissions ... ...

    Abstract Gaseous emissions from stored livestock manures and slurries are a significant source of greenhouse gases (GHG) and ammonia, accounting for more than 10% of all agricultural emissions in the US and EU. Nitrogen and carbon losses from these emissions reduce the utility of slurry as a fertiliser and as a feedstock for renewable energy generation. Slurry treatment technologies in the form of slurry additives represent an under-utilised means of reducing gaseous emissions and preserving the nutrient content of stored manures. A novel, reactive oxygen halide-based, temporal methanogenic inhibitor was tested on stored cattle slurry. Laboratory storage models were employed to replicate on-farm manure practices in a covered setting. Total gaseous emissions from slurry were reduced by up to 90% during storage. Different sources of reactive oxygen could be used to create a similar inhibition, where the breakdown products are not harmful to the environment or detrimental to the onward use of the slurry. Indeed, additive-treated slurry made a richer feedstock when anaerobically co-digested, increasing methane output by 17%. This proof of concept should now be assessed at farm-scale.
    Schlagwörter ammonia ; carbon ; cattle manure ; feedstocks ; greenhouses ; livestock ; methane ; methanogens ; nitrogen ; nutrient content ; oxygen ; renewable energy sources ; slurries
    Sprache Englisch
    Erscheinungsverlauf 2022-0715
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel
    ISSN 0959-6526
    DOI 10.1016/j.jclepro.2022.132004
    Datenquelle NAL Katalog (AGRICOLA)

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  7. Artikel: Beyond Basic Diversity Estimates-Analytical Tools for Mechanistic Interpretations of Amplicon Sequencing Data.

    Trego, Anna / Keating, Ciara / Nzeteu, Corine / Graham, Alison / O'Flaherty, Vincent / Ijaz, Umer Zeeshan

    Microorganisms

    2022  Band 10, Heft 10

    Abstract: Understanding microbial ecology through amplifying short read regions, typically 16S rRNA for prokaryotic species or 18S rRNA for eukaryotic species, remains a popular, economical choice. These methods provide relative abundances of key microbial taxa, ... ...

    Abstract Understanding microbial ecology through amplifying short read regions, typically 16S rRNA for prokaryotic species or 18S rRNA for eukaryotic species, remains a popular, economical choice. These methods provide relative abundances of key microbial taxa, which, depending on the experimental design, can be used to infer mechanistic ecological underpinnings. In this review, we discuss recent advancements in in situ analytical tools that have the power to elucidate ecological phenomena, unveil the metabolic potential of microbial communities, identify complex multidimensional interactions between species, and compare stability and complexity under different conditions. Additionally, we highlight methods that incorporate various modalities and additional information, which in combination with abundance data, can help us understand how microbial communities respond to change in a typical ecosystem. Whilst the field of microbial informatics continues to progress substantially, our emphasis is on popular methods that are applicable to a broad range of study designs. The application of these methods can increase our mechanistic understanding of the ongoing dynamics of complex microbial communities.
    Sprache Englisch
    Erscheinungsdatum 2022-10-01
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article ; Review
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms10101961
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Artikel ; Online: Unifying concepts in methanogenic, aerobic, and anammox sludge granulation.

    Mills, Simon / Trego, Anna Christine / Prevedello, Marco / De Vrieze, Jo / O'Flaherty, Vincent / Lens, Piet N L / Collins, Gavin

    Environmental science and ecotechnology

    2023  Band 17, Seite(n) 100310

    Abstract: The retention of dense and well-functioning microbial biomass is crucial for effective pollutant removal in several biological wastewater treatment technologies. High solids retention is often achieved through aggregation of microbial communities into ... ...

    Abstract The retention of dense and well-functioning microbial biomass is crucial for effective pollutant removal in several biological wastewater treatment technologies. High solids retention is often achieved through aggregation of microbial communities into dense, spherical aggregates known as granules, which were initially discovered in the 1980s. These granules have since been widely applied in upflow anaerobic digesters for waste-to-energy conversions. Furthermore, granular biomass has been applied in aerobic wastewater treatment and anaerobic ammonium oxidation (anammox) technologies. The mechanisms underpinning the formation of methanogenic, aerobic, and anammox granules are the subject of ongoing research. Although each granule type has been extensively studied in isolation, there has been a lack of comparative studies among these granulation processes. It is likely that there are some unifying concepts that are shared by all three sludge types. Identifying these unifying concepts could allow a unified theory of granulation to be formed. Here, we review the granulation mechanisms of methanogenic, aerobic, and anammox granular sludge, highlighting several common concepts, such as the role of extracellular polymeric substances, cations, and operational parameters like upflow velocity and shear force. We have then identified some unique features of each granule type, such as different internal structures, microbial compositions, and quorum sensing systems. Finally, we propose that future research should prioritize aspects of microbial ecology, such as community assembly or interspecies interactions in individual granules during their formation and growth.
    Sprache Englisch
    Erscheinungsdatum 2023-08-10
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article ; Review
    ISSN 2666-4984
    ISSN (online) 2666-4984
    DOI 10.1016/j.ese.2023.100310
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  9. Artikel: On the potential roles of phosphorus in the early evolution of energy metabolism.

    Nicholls, Jack W F / Chin, Jason P / Williams, Tom A / Lenton, Timothy M / O'Flaherty, Vincent / McGrath, John W

    Frontiers in microbiology

    2023  Band 14, Seite(n) 1239189

    Abstract: Energy metabolism in extant life is centered around phosphate and the energy-dense phosphoanhydride bonds of adenosine triphosphate (ATP), a deeply conserved and ancient bioenergetic system. Yet, ATP synthesis relies on numerous complex enzymes and has ... ...

    Abstract Energy metabolism in extant life is centered around phosphate and the energy-dense phosphoanhydride bonds of adenosine triphosphate (ATP), a deeply conserved and ancient bioenergetic system. Yet, ATP synthesis relies on numerous complex enzymes and has an autocatalytic requirement for ATP itself. This implies the existence of evolutionarily simpler bioenergetic pathways and potentially primordial alternatives to ATP. The centrality of phosphate in modern bioenergetics, coupled with the energetic properties of phosphorylated compounds, may suggest that primordial precursors to ATP also utilized phosphate in compounds such as pyrophosphate, acetyl phosphate and polyphosphate. However, bioavailable phosphate may have been notably scarce on the early Earth, raising doubts about the roles that phosphorylated molecules might have played in the early evolution of life. A largely overlooked phosphorus redox cycle on the ancient Earth might have provided phosphorus and energy, with reduced phosphorus compounds potentially playing a key role in the early evolution of energy metabolism. Here, we speculate on the biological phosphorus compounds that may have acted as primordial energy currencies, sources of environmental energy, or sources of phosphorus for the synthesis of phosphorylated energy currencies. This review encompasses discussions on the evolutionary history of modern bioenergetics, and specifically those pathways with primordial relevance, and the geochemistry of bioavailable phosphorus on the ancient Earth. We highlight the importance of phosphorus, not only in the form of phosphate, to early biology and suggest future directions of study that may improve our understanding of the early evolution of bioenergetics.
    Sprache Englisch
    Erscheinungsdatum 2023-08-02
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article ; Review
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2023.1239189
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Artikel ; Online: Acclimation of microbial communities to low and moderate salinities in anaerobic digestion.

    Buenaño-Vargas, Claribel / Gagliano, M Cristina / Paulo, Lara M / Bartle, Andrew / Graham, Alison / van Veelen, H Pieter J / O'Flaherty, Vincent

    The Science of the total environment

    2023  Band 906, Seite(n) 167470

    Abstract: In recent years anaerobic digestion (AD) has been investigated as suitable biotechnology to treat wastewater at elevated salinities. However, when starting up AD reactors with inocula that are not adapted to salinity, low concentrations of sodium ( ... ...

    Abstract In recent years anaerobic digestion (AD) has been investigated as suitable biotechnology to treat wastewater at elevated salinities. However, when starting up AD reactors with inocula that are not adapted to salinity, low concentrations of sodium (Na
    Mesh-Begriff(e) Wastewater ; Anaerobiosis ; Sewage/microbiology ; Waste Disposal, Fluid ; Salinity ; Bioreactors/microbiology ; Bacteria ; Microbiota
    Chemische Substanzen Wastewater ; Sewage
    Sprache Englisch
    Erscheinungsdatum 2023-09-29
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.167470
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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