Log in

Relevant bibliographies by topics / Micro-organisms, microbial polysaccharides, cells / Journal articles

To see the other types of publications on this topic, follow the link: Micro-organisms, microbial polysaccharides, cells.

Journal articles on the topic 'Micro-organisms, microbial polysaccharides, cells'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Micro-organisms, microbial polysaccharides, cells.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Flemming, H. C., and J. Wingender. "Relevance of microbial extracellular polymeric substances (EPSs) - Part I: Structural and ecological aspects." Water Science and Technology 43, no. 6 (2001): 1–8. http://dx.doi.org/10.2166/wst.2001.0326.

Full text

Abstract:

Extracellular polymeric substances are the construction materials for microbial aggregates such as biofilms, flocs (“planktonic biofilms”) and sludge. Their major components are not only polysaccharides but also proteins and in some cases lipids, with minor contents of nucleic acids and other biopolymers. In the EPS, biofilm organisms can establish stable arrangements and function multicellularly as synergistic microconsortia. The matrix facilitates the retention of exoenzymes, cellular debris and genetic material; it can be considered as a microbial recycling yard. Gradients can develop due t

APA, Harvard, Vancouver, ISO, and other styles

2

S, Chitra, and Anand B. "INFLUENCE OF GRAM-NEGATIVE STRAIN KLEBSIELLA OXYTOCA ON BIOCORROSION." Asian Journal of Pharmaceutical and Clinical Research 11, no. 2 (2018): 67. http://dx.doi.org/10.22159/ajpcr.2018.v11i2.19431.

Full text

Abstract:

Several studies of biofilms must accept that biofilms may develop in an enormous number of environments. This biofilm forms colonization on the solid surfaces by extracellular polysaccharides (EPSs) secreted by the microbial cells. The EPSs secreted by microbial cell stimulate corrosion in the engineered materials due to the presence of polyanionic neutral macromolecules. Many techniques have been described measuring and inhibiting microbiologically influenced corrosion; however, none has been accepted as an industry standard. This is because the risks posed to the marine biosphere due to the

APA, Harvard, Vancouver, ISO, and other styles

3

Koller, Martin. "Polyhydroxyalkanoate Biosynthesis at the Edge of Water Activity-Haloarchaea as Biopolyester Factories." Bioengineering 6, no. 2 (2019): 34. http://dx.doi.org/10.3390/bioengineering6020034.

Full text

Abstract:

Haloarchaea, the extremely halophilic branch of the Archaea domain, encompass a steadily increasing number of genera and associated species which accumulate polyhydroxyalkanoate biopolyesters in their cytoplasm. Such ancient organisms, which thrive in highly challenging, often hostile habitats characterized by salinities between 100 and 300 g/L NaCl, have the potential to outperform established polyhydroxyalkanoate production strains. As detailed in the review, this optimization presents due to multifarious reasons, including: cultivation setups at extreme salinities can be performed at minimi

APA, Harvard, Vancouver, ISO, and other styles

4

Snarr, Brendan D., Perrin Baker, Natalie C. Bamford, et al. "Microbial glycoside hydrolases as antibiofilm agents with cross-kingdom activity." Proceedings of the National Academy of Sciences 114, no. 27 (2017): 7124–29. http://dx.doi.org/10.1073/pnas.1702798114.

Full text

Abstract:

Galactosaminogalactan and Pel are cationic heteropolysaccharides produced by the opportunistic pathogens Aspergillus fumigatus and Pseudomonas aeruginosa, respectively. These exopolysaccharides both contain 1,4-linked N-acetyl-d-galactosamine and play an important role in biofilm formation by these organisms. Proteins containing glycoside hydrolase domains have recently been identified within the biosynthetic pathway of each exopolysaccharide. Recombinant hydrolase domains from these proteins (Sph3h from A. fumigatus and PelAh from P. aeruginosa) were found to degrade their respective polysacc

APA, Harvard, Vancouver, ISO, and other styles

5

Kabanov, V. A. "From synthetic polyelectrolytes to polymer-subunit vaccines." Pure and Applied Chemistry 76, no. 9 (2004): 1659–77. http://dx.doi.org/10.1351/pac200476091659.

Full text

Abstract:

The results of many years of collaborative research by chemists and immunologists in the area of application of synthetic polyelectrolytes in immunology are reviewed. Linear synthetic polyelectrolytes with diverse structures (which are not structural analogs of biopolymers and, hence, not antigenic because they are unknown to the immune system), when introduced into the organism, noticeably intensify the formation, migration, and dissemination of stem cells, which are precursors of all specialized cells including functional immune cells. In addition, synthetic polyelectrolytes, when introduced

APA, Harvard, Vancouver, ISO, and other styles

6

Hao, Likai, Jianli Li, Andreas Kappler, and Martin Obst. "Mapping of Heavy Metal Ion Sorption to Cell-Extracellular Polymeric Substance-Mineral Aggregates by Using Metal-Selective Fluorescent Probes and Confocal Laser Scanning Microscopy." Applied and Environmental Microbiology 79, no. 21 (2013): 6524–34. http://dx.doi.org/10.1128/aem.02454-13.

Full text

Abstract:

ABSTRACTBiofilms, organic matter, iron/aluminum oxides, and clay minerals bind toxic heavy metal ions and control their fate and bioavailability in the environment. The spatial relationship of metal ions to biomacromolecules such as extracellular polymeric substances (EPS) in biofilms with microbial cells and biogenic minerals is complex and occurs at the micro- and submicrometer scale. Here, we review the application of highly selective and sensitive metal fluorescent probes for confocal laser scanning microscopy (CLSM) that were originally developed for use in life sciences and propose their

APA, Harvard, Vancouver, ISO, and other styles

7

Guliye, A. Y., C. Atasoglu, N. McKain, and R. J. Wallace. "An in vitro assessment of amino acid requirements for optimal xylan fermentation by mixed ruminal micro-organisms from the sheep rumen." Proceedings of the British Society of Animal Science 2003 (2003): 49. http://dx.doi.org/10.1017/s1752756200012084.

Full text

Abstract:

Ruminal microbes play a important role in the fermentation of structural plant polysaccharides, and constitute a major source of protein for the animal. Dietary protein provides amino acids which generally stimulate microbial growth rates and yields. The aim of this experiment was to identify, using a deletion approach, which individual amino acids limit fermentation of one of the main components of plant fibre, xylan.

APA, Harvard, Vancouver, ISO, and other styles

8

West, AW, GP Sparling, and TW Speir. "Microbial activity in gradually dried or rewetted soils as governed by water and substrate availability." Soil Research 27, no. 4 (1989): 747. http://dx.doi.org/10.1071/sr9890747.

Full text

Abstract:

Microbial respiration, mass and activity (respiration/mass) in three silt loam soils with different moisture regimes (1000-2700 mm annual rainfall) were measured as the field-moist soils were gradually air-dried at 25�C in the laboratory. Microbial CO2 and O2 respiration and mass (estimated from substrate-induced respiration), and oxidizable organic carbon, extractable in 0.5 M K2SO4, were monitored throughout the 60 h drying period and also in samples of these gradually dried soils which were rewetted with water (2 ml g-1 soil). Water availability was the major factor controlling microbial re

APA, Harvard, Vancouver, ISO, and other styles

9

Chamier, Anne-Carole. "Microbial degradation of leaf litter in freshwater streams: effect of low pH – abstract." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 94 (1988): 107–8. http://dx.doi.org/10.1017/s0269727000007181.

Full text

Abstract:

Many freshwater streams are predominantly heterotrophic, the energy source for all trophic levels of the biota being derived from allochthonous plant litter that is degraded by saprotrophic micro-organisms. Leaves falling into streams have most of their soluble constituents leached out within twenty-four hours of submersion. Few of the resident terrestrial saprotrophs survive in the aquatic environment and the leaves are rapidly colonised by freshwater fungi, particularly aquatic hyphomycetes (Chamier & Dixon 1982a; Chamier et al. 1984). These fungi produce all the enzymes required to degr

APA, Harvard, Vancouver, ISO, and other styles

10

Queller, David C., and Joan E. Strassmann. "Experimental evolution of multicellularity using microbial pseudo-organisms." Biology Letters 9, no. 1 (2013): 20120636. http://dx.doi.org/10.1098/rsbl.2012.0636.

Full text

Abstract:

In a major evolutionary transition to a new level of organization, internal conflicts must be controlled before the transition can truly be successful. One such transition is that from single cells to multicellularity. Conflicts among cells in multicellular organisms can be greatly reduced if they consist of genetically identical clones. However, mutations to cheaters that experience one round of within-individual selection could still be a problem, particularly for certain life cycles. We propose an experimental evolution method to investigate this issue, using micro-organisms to construct mu

APA, Harvard, Vancouver, ISO, and other styles

11

Kitafa, Baidaa A., and Afaf J. Obaid Al-saned. "A Review on Microbial Fuel Cells." Engineering and Technology Journal 39, no. 1A (2021): 1–8. http://dx.doi.org/10.30684/etj.v39i1a.1518.

Full text

Abstract:

The Microbial Fuel Cell (MFC) is a bioreactor with which the chemical energy in chemical bonds of organic compounds are converted to electricity under anaerobic conditions through catalytic reactions of micro-organisms. It has been familiar for a long time that electricity can be generated directly through using bacteria to break organic matter. A microbial fuel cell can also serve in different wastewater treatment to destroy organic matter. The development of MFC technology requires a greater understanding of the microbial processes for MFCs, and their components, limitations, factors and des

APA, Harvard, Vancouver, ISO, and other styles

12

Asapu, Sunitha, Santosh Pant, Peyman Majid, Isabel C. Escobar, and Cyndee L. Gruden. "Study of copper-charged membranes for control of fouling due to bacteria and algae organic matter." Journal of Water Reuse and Desalination 5, no. 4 (2015): 516–27. http://dx.doi.org/10.2166/wrd.2015.001.

Full text

Abstract:

The accumulation of micro-organisms, along with the presence of nutrients, forms biofilms. Biofoulants that are typically encountered in desalination systems include cellular organisms (e.g. bacteria or algae) and organic debris, including algae organic matter. The accumulation of these micro-organisms is problematic to membranes by causing irreversible fouling. The most adverse effects due to biofouling include declines in permeate flux and salt rejection. In addition, biofilm formation necessitates frequent membrane cleaning, increasing operating costs and decreasing membrane life. The goal

APA, Harvard, Vancouver, ISO, and other styles

13

Sutherland, I. W. "Exopolysaccharides in biofilms, flocs and related structures." Water Science and Technology 43, no. 6 (2001): 77–86. http://dx.doi.org/10.2166/wst.2001.0345.

Full text

Abstract:

In biofilms, flocs and similar multispecies microbial communities, exopolysaccharides (EPSs) are always present, frequently as the major component other than water. The EPSs vary widely in their composition, structure and properties and thus it is impossible to generalise about their contribution to biofilm or floc structure. Relatively few of the polymers obtained from biofilms and flocs have been adequately purified and analysed but such evidence as is so far available suggests that the polysaccharides closely resemble those synthesised by the corresponding planktonic bacteria. From a knowle

APA, Harvard, Vancouver, ISO, and other styles

14

Lage, Claudia A. S., Gabriel Z. L. Dalmaso, Lia C. R. S. Teixeira, et al. "Mini-Review: Probing the limits of extremophilic life in extraterrestrial environment-simulated experiments." International Journal of Astrobiology 11, no. 4 (2012): 251–56. http://dx.doi.org/10.1017/s1473550412000316.

Full text

Abstract:

AbstractAstrobiology is a relatively recent scientific field that seeks to understand the origin and dynamics of life in the Universe. Several hypotheses have been proposed to explain life in the cosmic context throughout human history, but only now, technology has allowed many of them to be tested. Laboratory experiments have been able to show how chemical elements essential to life, such as carbon, nitrogen, oxygen and hydrogen combine in biologically important compounds. Interestingly, these compounds are ubiquitous. How these compounds were combined to the point of originating cells and co

APA, Harvard, Vancouver, ISO, and other styles

15

Hasan, Kamrul, Sunil A. Patil, Dónal Leech, Cecilia Hägerhäll, and Lo Gorton. "Electrochemical communication between microbial cells and electrodes via osmium redox systems." Biochemical Society Transactions 40, no. 6 (2012): 1330–35. http://dx.doi.org/10.1042/bst20120120.

Full text

Abstract:

Electrochemical communication between micro-organisms and electrodes is the integral and fundamental part of BESs (bioelectrochemical systems). The immobilization of bacterial cells on the electrode and ensuring efficient electron transfer to the electrode via a mediator are decisive features of mediated electrochemical biosensors. Notably, mediator-based systems are essential to extract electrons from the non-exoelectrogens, a major group of microbes in Nature. The advantage of using polymeric mediators over diffusible mediators led to the design of osmium redox polymers. Their successful use

APA, Harvard, Vancouver, ISO, and other styles

16

Soto, María J., Juan Sanjuán, and José Olivares. "Rhizobia and plant-pathogenic bacteria: common infection weapons." Microbiology 152, no. 11 (2006): 3167–74. http://dx.doi.org/10.1099/mic.0.29112-0.

Full text

Abstract:

Plant-interacting micro-organisms can establish either mutualistic or pathogenic associations. Although the outcome is completely different, common molecular mechanisms that mediate communication between the interacting partners seem to be involved. Specifically, nitrogen-fixing bacterial symbionts of legume plants, collectively termed rhizobia, and phytopathogenic bacteria have adopted similar strategies and genetic traits to colonize, invade and establish a chronic infection in the plant host. Quorum-sensing signals and identical two-component regulatory systems are used by these bacteria to

APA, Harvard, Vancouver, ISO, and other styles

17

Timothy Terna, Ayisa, Muhammad Ramatu Gogo, and Mohammed Jibrin Ndejiko. "Evaluation of the electricity generation potential of bacteria with microbial fuel cell technology using abattoir effluent as a substrate." Journal of Basics and Applied Sciences Research 3, no. 3 (2025): 71–77. https://doi.org/10.4314/jobasr.v3i3.9.

Full text

Abstract:

The concerns about global warming are gradually causing sensitive debate globally therefore its pertinent at this period to intensify the quest for alternative sources of energy. The potential of abattoir effluent to generate electricity at room temperature via microbial fuel cell technology has been demonstrated. Microbial fuel cell is a bio electrochemical system which utilizes bacteria to generate electricity. This study was conducted to evaluate the potential of bacteria to generate electricity through microbial fuel cells with abattoir effluent serving as a substrate. The study was carrie

APA, Harvard, Vancouver, ISO, and other styles

18

Roden, Eric E. "Microbial iron-redox cycling in subsurface environments." Biochemical Society Transactions 40, no. 6 (2012): 1249–56. http://dx.doi.org/10.1042/bst20120202.

Full text

Abstract:

In addition to its central role in mediating electron-transfer reactions within all living cells, iron undergoes extracellular redox transformations linked to microbial energy generation through utilization of Fe(II) as a source of chemical energy or Fe(III) as an electron acceptor for anaerobic respiration. These processes permit microbial populations and communities to engage in cyclic coupled iron oxidation and reduction within redox transition zones in subsurface environments. In the present paper, I review and synthesize a few case studies of iron-redox cycling in subsurface environments,

APA, Harvard, Vancouver, ISO, and other styles

19

Kingston-Smith, A. H., R. J. Merry, D. K. Leemans, H. Thomas, and M. K. Theodorou. "Evidence in support of a role for plant-mediated proteolysis in the rumens of grazing animals." British Journal of Nutrition 93, no. 1 (2005): 73–79. http://dx.doi.org/10.1079/bjn20041303.

Full text

Abstract:

The present work aimed to differentiate between proteolytic activities of plants and micro-organisms during the incubation of grass in cattle rumens. Freshly cut ryegrass was placed in bags of varying permeability and incubated for 16 h in the rumens of dairy cows that had previously grazed a ryegrass sward, supplemented with 4 kg dairy concentrate daily. Woven polyester bags (50 μm pore size) permitted direct access of the micro-organisms and rumen fluid enzymes to the plant material. The polythene was impermeable even to small molecules such as NH3. Dialysis tubing excluded micro-organisms a

APA, Harvard, Vancouver, ISO, and other styles

20

Banik, A., N. K. Jana, B. R. Maiti, and T. K. Ghosh. "Development of Microbial Fuel Cells and Electrode Designs with Waste Water Anaerobes." Greener Journal of Biological Sciences 2, no. 2 (2012): 13–19. https://doi.org/10.15580/gjbs.2012.2.08181246.

Full text

Abstract:

Two designs of microbial fuel cells have been developed. In the first type, a Single Chambered-Microbial Fuel Cell of 200ml capacity was constructed with the cathode and anode made of carbon brushes in a ‘T’ shaped configuration, attached in Cloth Electrode Assembly. In the second type, multiple anodes attached in a circuit, were used in developing a Multi Anode Single Chambered-Microbial Fuel Cell of 100ml capacity along with a common cathode made of graphite powder and adhesive, hardened by air drying. The generation of voltage and current was observed with both designs. Three ty

APA, Harvard, Vancouver, ISO, and other styles

21

Smalley, J. W. "Pathogenic Mechanisms in Periodontal Disease." Advances in Dental Research 8, no. 2 (1994): 320–28. http://dx.doi.org/10.1177/08959374940080022801.

Full text

Abstract:

Periodontal diseases have been considered as "infections" in which micro-organisms initiate and maintain the destructive inflammatory response. Host-mediated tissue destruction occurs via complement activation and the release of lysosomal enzymes, and connective tissue matrix metalloproteinases. Microbial enzymes may damage connective tissues directly, and, together with toxic metabolites and structural materials, are thought to disrupt the reparative activities of fibroblasts and cells of the immune defenses. The significance and relative contributions of host and microbial factors to the dis

APA, Harvard, Vancouver, ISO, and other styles

22

Lonnen, James. "Life on contact lenses: Exploiting a modern habitat." Biochemist 31, no. 4 (2009): 26–27. http://dx.doi.org/10.1042/bio03104026.

Full text

Abstract:

There are an estimated 125 million contact lens wearers across the world, and the majority experience few complications; however, it is well known that contact lens wear is a risk factor for microbial keratitis (infection of the cornea of the eye). Owing to the ubiquitous distribution of micro-organisms, it is extremely di cult to prevent them from colonizing contact lens storage cases. Bacteria, fungi and protozoa have all been found in contact lens storage cases; these micro-organisms can adhere to the contact lens, which then acts as a vector to transport the microbes on to the surface of t

APA, Harvard, Vancouver, ISO, and other styles

23

Imran, Muhammad, Ali Basem, Nahid Fatima, et al. "Computational Analysis of Magneto Bioconcvection Casson Nanofluid Flow Containing Gyrotactic Microbes: A Bio-Microsystemtechnology and Bio-Fuel Cells Application." Journal of Nanofluids 13, no. 3 (2024): 665–73. http://dx.doi.org/10.1166/jon.2024.2160.

Full text

Abstract:

Scientists and researchers have been captivated by the field of nanotechnology research, drawn to its diverse applications such as cancer treatment, pharmaceuticals, aircraft manufacturing, nano-robot technology, bionano advancements, heat exchange instruments, engine coolant use, microelectronics, water distillation, pharmaceutical procedures, and rubber materials. Incorporating gyrotactic microbes into nanoparticles is crucial for enhancing the thermal efficiency of various systems, including microbial fuel cells, bacteria-powered micro-mixers, micro-volumes such as microfluidic devices, enz

APA, Harvard, Vancouver, ISO, and other styles

24

Park, C., S. Y. Lee, H. J. Kim, K. Park, J. S. Kim, and S. J. Lee. "Synergy of TLR2 and H1R on Cox-2 Activation in Pulpal Cells." Journal of Dental Research 89, no. 2 (2009): 180–85. http://dx.doi.org/10.1177/0022034509354720.

Full text

Abstract:

Although pulp fibroblasts are a major cell type in dental pulp, their roles in microbial recognition and pulpal inflammation are not well-understood. Considering the pivotal role of Toll-like receptors (TLRs) in the recognition of micro-organisms, we hypothesized that TLRs on pulp fibroblasts may induce inflammatory signals in dental pulp. In human pulp fibroblasts, TLR2, 3, 4, and 5 were constitutively expressed. Stimulation of TLR2 and 3 induced the expression of pro-inflammatory genes such as CXCL10, CCL5, and/or Cox-2 in pulp fibroblasts. Interestingly, histamine synergistically activated

APA, Harvard, Vancouver, ISO, and other styles

25

Rajalakshmi, S., R. Subhasree, Rajalakshmanan Easwaramoorthy, and Thiyaneswaran Nesappan. "Assessment of the characterization antimicrobial and green synthesis of magnesium oxide nanoparticles using Psydium guajava - in-vitro analysi." Journal of Complementary Medicine Research 13, no. 5 (2023): 16. http://dx.doi.org/10.5455/jcmr.2023.14.02.03.

Full text

Abstract:

Aim: To assess the characterization, antimicrobial activity of green synthesised magnesium oxide nanoparticles using Psydium guajava leaves. Materials And Methods: Psydium guajava leaves were dried and ground, of which 2 g of the powder was used for the study.the powder was then dissolved in 100ml of distilled water. 1 mg of magnesium chloride salt was dissolved in 20 ml of distilled water. Both the solutions were mixed and subjected to centrifuge. After the preparation of the nanoparticle, it was subjected for further investigation like SEM analysis, EDAX, UV-VIs, cytotoxicity and anti microb

APA, Harvard, Vancouver, ISO, and other styles

26

DUENSING, Thomas D., and Jos P. M. van PUTTEN. "Vitronectin binds to the gonococcal adhesin OpaA through a glycosaminoglycan molecular bridge." Biochemical Journal 334, no. 1 (1998): 133–39. http://dx.doi.org/10.1042/bj3340133.

Full text

Abstract:

Several bacterial pathogens including Neisseria gonorrhoeae bind the human serum glycoprotein vitronectin. We aimed at defining the gonococcal receptor for vitronectin. Ligand blots demonstrated that vitronectin bound specifically to the heparin-binding outer-membrane protein OpaA, but that coating OpaA with the sulphated polysaccharide heparin was required for the interaction to occur. Bound vitronectin could be dissociated from OpaA–heparin–vitronectin complexes by the addition of excess heparin, indicating that sulphated polysaccharides provided the main linkage between the two proteins. Bi

APA, Harvard, Vancouver, ISO, and other styles

27

Bouix, Marielle, Agnès Grabowski, Monique Charpentier, Jean-Yves Leveau, and Bruno Duteurtre. "Rapid detection of microbial contamination in grape juice by flow cytometry." OENO One 33, no. 1 (1999): 31. http://dx.doi.org/10.20870/oeno-one.1999.33.1.1038.

Full text

Abstract:

<p style="text-align: justify;">This study presents an application of flow cytometry to evaluate rapidly the viable micro-organisms in grape juice. In this method, viable cells are firstly specitically labelled with a fluorescent reagent. The sample is then injected into the flow cytometer where the labelled micro-organisms are individually illuminated by a laser beam. The emission of fluorescence is measured. The system counts the number of fluorescent events and prints out a histogram of the fluorescence intensity which is characteristic of the micro-organism being analysed. In laborat

APA, Harvard, Vancouver, ISO, and other styles

28

Shibata, Nobuyuki, Tomomi Saitoh, Yukari Tadokoro та Yoshio Okawa. "The cell wall galactomannan antigen from Malassezia furfur and Malassezia pachydermatis contains β-1,6-linked linear galactofuranosyl residues and its detection has diagnostic potential". Microbiology 155, № 10 (2009): 3420–29. http://dx.doi.org/10.1099/mic.0.029967-0.

Full text

Abstract:

Lipophilic yeasts of the genus Malassezia are associated with several skin diseases, such as pityriasis versicolor, Malassezia folliculitis, seborrhoeic dermatitis and atopic dermatitis, and are also increasingly associated with catheter-related fungaemia. The cell wall components of pathogenic micro-organisms behave as an antigen and/or ligand of the innate immune response. Live cells of Malassezia furfur and Malassezia pachydermatis did not react with an anti-α-1,2-mannoside antibody. However, they showed a strong hydrophobicity and reactivity with an anti-β-1,3-glucan antibody compared to t

APA, Harvard, Vancouver, ISO, and other styles

29

Matin, Maima, Magdalena Koszarska, Atanas G. Atanasov, et al. "Bioactive Potential of Algae and Algae-Derived Compounds: Focus on Anti-Inflammatory, Antimicrobial, and Antioxidant Effects." Molecules 29, no. 19 (2024): 4695. http://dx.doi.org/10.3390/molecules29194695.

Full text

Abstract:

Algae, both micro- and macroalgae, are recognized for their rich repository of bioactive compounds with potential therapeutic applications. These marine organisms produce a variety of secondary metabolites that exhibit significant anti-inflammatory, antioxidant, and antimicrobial properties, offering promising avenues for the development of new drugs and nutraceuticals. Algae-derived compounds, including polyphenols, carotenoids, lipids, and polysaccharides, have demonstrated efficacy in modulating key inflammatory pathways, reducing oxidative stress, and inhibiting microbial growth. At the mo

APA, Harvard, Vancouver, ISO, and other styles

30

Handfield, M., H. V. Baker, and R. J. Lamont. "Beyond Good and Evil in the Oral Cavity: Insights into Host-Microbe Relationships Derived from Transcriptional Profiling of Gingival Cells." Journal of Dental Research 87, no. 3 (2008): 203–23. http://dx.doi.org/10.1177/154405910808700302.

Full text

Abstract:

In many instances, the encounter between host and microbial cells, through a long-standing evolutionary association, can be a balanced interaction whereby both cell types co-exist and inflict a minimal degree of harm on each other. In the oral cavity, despite the presence of large numbers of diverse organisms, health is the most frequent status. Disease will ensue only when the host-microbe balance is disrupted on a cellular and molecular level. With the advent of microarrays, it is now possible to monitor the responses of host cells to bacterial challenge on a global scale. However, microarra

APA, Harvard, Vancouver, ISO, and other styles

31

Lefebvre, O., A. Al-Mamun, and H. Y. Ng. "A microbial fuel cell equipped with a biocathode for organic removal and denitrification." Water Science and Technology 58, no. 4 (2008): 881–85. http://dx.doi.org/10.2166/wst.2008.343.

Full text

Abstract:

Microbial fuel cells (MFCs) are a promising anaerobic technology but they are limited by the high cost of the catalyst used at the cathode (typically platinum). In this study, we designed a novel type of two-chambered MFC wherein an autoheterotrophic denitrifying biofilm replaced the costly catalyst on the cathode surface. Micro-organisms performed denitrification by using electrons supplied by bacteria oxidizing domestic wastewater and acetate as substrates in the anode chamber. This two-chambered MFC equipped with a biocathode generated during more than 1.5 month up to 9.4 mW m−2 of anode su

APA, Harvard, Vancouver, ISO, and other styles

32

Vlassopoulou, Marigoula, Nikolaos Paschalidis, Alexandros L. Savvides, et al. "Immunomodulating Activity of Pleurotus eryngii Mushrooms Following Their In Vitro Fermentation by Human Fecal Microbiota." Journal of Fungi 8, no. 4 (2022): 329. http://dx.doi.org/10.3390/jof8040329.

Full text

Abstract:

Recent studies have revealed the crucial role of several edible mushrooms and fungal compounds, mainly polysaccharides, in human health and disease. The investigation of the immunomodulating effects of mushroom polysaccharides, especially β-glucans, and the link between their anticancer and immunomodulatory properties with their possible prebiotic activity on gut micro-organisms has been the subject of intense research over the last decade. We investigated the immunomodulating effects of Pleurotus eryngii mushrooms, selected due to their high β-glucan content, strong lactogenic effect, and pot

APA, Harvard, Vancouver, ISO, and other styles

33

BÉG, O. ANWAR, MD JASHIM UDDIN, and W. A. KHAN. "BIOCONVECTIVE NON-NEWTONIAN NANOFLUID TRANSPORT IN POROUS MEDIA CONTAINING MICRO-ORGANISMS IN A MOVING FREE STREAM." Journal of Mechanics in Medicine and Biology 15, no. 05 (2015): 1550071. http://dx.doi.org/10.1142/s0219519415500712.

Full text

Abstract:

Bioconvection flow of non-Newtonian nanofluids along a horizontal flat plate in a porous medium saturated with gyrotactic microorganisms is investigated by combined group similarity numerical technique. A linear group of transformations is used to develop similarity transformations and the corresponding similarity equations of the governing coupled, nonlinear ordinary differential boundary layer transport equations. The resulting nonlinear boundary value problem with appropriate boundary conditions is solved numerically by an MAPLE software algorithm. The effects of the controlling parameters

APA, Harvard, Vancouver, ISO, and other styles

34

Schaetzle, Olivier, Frédéric Barrière, and Keith Baronian. "Bacteria and yeasts as catalysts in microbial fuel cells: electron transfer from micro-organisms to electrodes for green electricity." Energy & Environmental Science 1, no. 6 (2008): 607. http://dx.doi.org/10.1039/b810642h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

RASHMI D, ANUSHA A, VIVEKKUMAR, POOJA GAIKWAD, SINDHU, and YAMUNA G. "ANALYSIS OF ELECTRO-POTENTIAL IN MICROBIAL FUEL CELLS AND EVALUATION OF SEWAGE MICRO-ORGANISMS FOR THE PRODUCTION OF ALCOHOL." Asian Journal of Microbiology, Biotechnology & Environmental Sciences 27, no. 01-02 (2025): 111–18. https://doi.org/10.53550/ajmbes.2025.v27i01-02.017.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Lee, Hyang-Mi, Phuong Vo, and Dokyun Na. "Advancement of Metabolic Engineering Assisted by Synthetic Biology." Catalysts 8, no. 12 (2018): 619. http://dx.doi.org/10.3390/catal8120619.

Full text

Abstract:

Synthetic biology has undergone dramatic advancements for over a decade, during which it has expanded our understanding on the systems of life and opened new avenues for microbial engineering. Many biotechnological and computational methods have been developed for the construction of synthetic systems. Achievements in synthetic biology have been widely adopted in metabolic engineering, a field aimed at engineering micro-organisms to produce substances of interest. However, the engineering of metabolic systems requires dynamic redistribution of cellular resources, the creation of novel metaboli

APA, Harvard, Vancouver, ISO, and other styles

37

Chernov, V. M., A. A. Mouzykantov, N. B. Baranova, and O. A. Chernova. "Extracellular Vesicles of Bacteria Mediate Intercellular Communication: Practical Applications and Biosafety (Review)." Прикладная биохимия и микробиология 59, no. 2 (2023): 107–19. http://dx.doi.org/10.31857/s0555109923020046.

Full text

Abstract:

Extracellular vesicles, secreted by bacterial cells, are the focus of close attention of researchers. They are enriched with bioactive molecules, mediate the intercellular communication of micro- and macroorganisms, participate in the adaptation of bacteria to stressful conditions, reprogramming target cells, modulating immunoreactivity in higher organisms, changing the structure of microbial communities and ecosystems. The unique properties of bacterial extracellular vesicles (BEVs) open up broad prospects for their practical application – in clinical medicine, agriculture, biotechnology and

APA, Harvard, Vancouver, ISO, and other styles

38

Nadeem, Sohail, Muhammad Naveed Khan, Noor Muhammad, and Shafiq Ahmad. "Mathematical analysis of bio-convective micropolar nanofluid." Journal of Computational Design and Engineering 6, no. 3 (2019): 233–42. http://dx.doi.org/10.1016/j.jcde.2019.04.001.

Full text

Abstract:

Abstract The present investigation concentrates on three dimensional unsteady forced bio-convection flow of a viscous fluid. An incompressible flow of a micropolar nanofluid encloses micro-organisms past an exponentially stretching sheet with magnetic field is analyzed. By employing convenient transformation the partial differential equations are converted into the ordinary differential equations which are non-linear. By using shooting method to solved these equations numerically. The influence of the determining parameters on the velocity, temperature, micro-rotation, nanoparticle volume frac

APA, Harvard, Vancouver, ISO, and other styles

39

B, Archana. "Phytochemical Screening and Antimicrobial Activity of Methanolic Extract from Genus Phellodendron (Cork Tree) Barks." Phytochemical Screening and Antimicrobial Activity of Methanolic Extract from Genus Phellodendron (Cork Tree) Barks 4, no. 4 (2024): 59–65. https://doi.org/10.26452/fjphs.v4i4.676.

Full text

Abstract:

The present study examined the phytochemical and antimicrobial properties of a methanolic bark extract from a cork tree (Genus Phellodendron). Alkaloids, carbohydrates, steroids, reducing sugars, oils and fats, gums, volatile oil, flavonoids, proteins, amino acids, cysteine, anthraquinone glycoside, tannins, and phenolic chemicals were all found during the phytochemical screening. Due to the presence of oils, non-reducing polysaccharides and saponin glycoside were not present, and the solubility test verified insolubility in 90% ethanol and water. Studies on phytochemicals and antimicrobials w

APA, Harvard, Vancouver, ISO, and other styles

40

Li, Shuo, Li Shi, Ting Ye, et al. "Development of Crosslinker-Free Polysaccharide-Lysozyme Microspheres for Treatment Enteric Infection." Polymers 15, no. 5 (2023): 1077. http://dx.doi.org/10.3390/polym15051077.

Full text

Abstract:

Antibiotic abuse in the conventional treatment of microbial infections, such as inflammatory bowel disease, induces cumulative toxicity and antimicrobial resistance which requires the development of new antibiotics or novel strategies for infection control. Crosslinker-free polysaccharide-lysozyme microspheres were constructed via an electrostatic layer-by-layer self-assembly technique by adjusting the assembly behaviors of carboxymethyl starch (CMS) on lysozyme and subsequently outer cationic chitosan (CS) deposition. The relative enzymatic activity and in vitro release profile of lysozyme un

APA, Harvard, Vancouver, ISO, and other styles

41

Joaquin, Jonathan C., Calvin Kwan, Nina Abramzon, Kurt Vandervoort, and Graciela Brelles-Mariño. "Is gas-discharge plasma a new solution to the old problem of biofilm inactivation?" Microbiology 155, no. 3 (2009): 724–32. http://dx.doi.org/10.1099/mic.0.021501-0.

Full text

Abstract:

Conventional disinfection and sterilization methods are often ineffective with biofilms, which are ubiquitous, hard-to-destroy microbial communities embedded in a matrix mostly composed of exopolysaccharides. The use of gas-discharge plasmas represents an alternative method, since plasmas contain a mixture of charged particles, chemically reactive species and UV radiation, whose decontamination potential for free-living, planktonic micro-organisms is well established. In this study, biofilms were produced using Chromobacterium violaceum, a Gram-negative bacterium present in soil and water and

APA, Harvard, Vancouver, ISO, and other styles

42

Repac, Jelena, Marija Mandić, Tanja Lunić, Bojan Božić, and Biljana Božić Nedeljković. "Mining the capacity of human-associated microorganisms to trigger rheumatoid arthritis—A systematic immunoinformatics analysis of T cell epitopes." PLOS ONE 16, no. 6 (2021): e0253918. http://dx.doi.org/10.1371/journal.pone.0253918.

Full text

Abstract:

Autoimmune diseases, often triggered by infection, affect ~5% of the worldwide population. Rheumatoid Arthritis (RA)–a painful condition characterized by the chronic inflammation of joints—comprises up to 20% of known autoimmune pathologies, with the tendency of increasing prevalence. Molecular mimicry is recognized as the leading mechanism underlying infection-mediated autoimmunity, which assumes sequence similarity between microbial and self-peptides driving the activation of autoreactive lymphocytes. T lymphocytes are leading immune cells in the RA-development. Therefore, deeper understandi

APA, Harvard, Vancouver, ISO, and other styles

43

Jorens, P. G., K. E. Matthys, and H. Bult. "Modulation of nitric oxide synthase activity in macrophages." Mediators of Inflammation 4, no. 2 (1995): 75–89. http://dx.doi.org/10.1155/s0962935195000135.

Full text

Abstract:

L-Arginine is converted to the highly reactive and unstable nitric oxide (NO) and L-citrulline by an enzyme named nitric oxide synthase (NOS). NO decomposes into other nitrogen oxides such as nitrite (NO2−) and nitrate (NO3−), and in the presence of superoxide anion to the potent oxidizing agent peroxynitrite (ONOO−). Activated rodent macrophages are capable of expressing an inducible form of this enzyme (iNOS) in response to appropriate stimuli, i.e., lipopolysaccharide (LPS) and interferon-γ (IFNγ). Other cytokines can modulate the induction of NO biosynthesis in macrophages. NO is a major e

APA, Harvard, Vancouver, ISO, and other styles

44

Taylor, John W., Elizabeth Turner, Jeffrey P. Townsend, Jeremy R. Dettman, and David Jacobson. "Eukaryotic microbes, species recognition and the geographic limits of species: examples from the kingdom Fungi." Philosophical Transactions of the Royal Society B: Biological Sciences 361, no. 1475 (2006): 1947–63. http://dx.doi.org/10.1098/rstb.2006.1923.

Full text

Abstract:

The claim that eukaryotic micro-organisms have global geographic ranges, constituting a significant departure from the situation with macro-organisms, has been supported by studies of morphological species from protistan kingdoms. Here, we examine this claim by reviewing examples from another kingdom of eukaryotic microbes, the Fungi. We show that inferred geographic range of a fungal species depends upon the method of species recognition. While some fungal species defined by morphology show global geographic ranges, when fungal species are defined by phylogenetic species recognition they are

APA, Harvard, Vancouver, ISO, and other styles

45

Kingston-Smith, Alison H., Joan E. Edwards, Sharon A. Huws, Eun J. Kim, and Michael Abberton. "Plant-based strategies towards minimising ‘livestock's long shadow’." Proceedings of the Nutrition Society 69, no. 4 (2010): 613–20. http://dx.doi.org/10.1017/s0029665110001953.

Full text

Abstract:

Ruminant farming is an important component of the human food chain. Ruminants can use offtake from land unsuitable for cereal crop cultivation via interaction with the diverse microbial population in their rumens. The rumen is a continuous flow fermenter for the digestion of ligno-cellulose, with microbial protein and fermentation end-products incorporated by the animal directly or during post-ruminal digestion. However, ruminal fermentation is inefficient in capturing the nutrient resource presented, resulting in environmental pollution and generation of greenhouse gases. Methane is generated

APA, Harvard, Vancouver, ISO, and other styles

46

Charoensappakit, Awirut, Kritsanawan Sae-khow, and Asada Leelahavanichkul. "Gut Barrier Damage and Gut Translocation of Pathogen Molecules in Lupus, an Impact of Innate Immunity (Macrophages and Neutrophils) in Autoimmune Disease." International Journal of Molecular Sciences 23, no. 15 (2022): 8223. http://dx.doi.org/10.3390/ijms23158223.

Full text

Abstract:

The gut barrier is a single cell layer that separates gut micro-organisms from the host, and gut permeability defects result in the translocation of microbial molecules from the gut into the blood. Despite the silent clinical manifestation, gut translocation of microbial molecules can induce systemic inflammation that might be an endogenous exacerbating factor of systemic lupus erythematosus. In contrast, circulatory immune-complex deposition and the effect of medications on the gut, an organ with an extremely large surface area, of patients with active lupus might cause gut translocation of m

APA, Harvard, Vancouver, ISO, and other styles

47

Akob, D. M., and K. Küsel. "Where microorganisms meet rocks in the Earth's Critical Zone." Biogeosciences Discussions 8, no. 2 (2011): 2523–62. http://dx.doi.org/10.5194/bgd-8-2523-2011.

Full text

Abstract:

Abstract. The Earth's Critical Zone (CZ) is the critical, outer shell of the Earth that provides an arena for the interplay of diverse physical, chemical, and biological processes that are fundamental for sustaining life. As microbes are the principle drivers of biogeochemical cycles, it is necessary to understand the biodiversity of the CZ unseen majority and their impact on life-sustaining processes. This review aims to summarize the factors controlling where microbes (prokaryotes and micro-eukaryotes) live within the CZ and what is known to date about their diversity and function. Microbes

APA, Harvard, Vancouver, ISO, and other styles

48

HOPKINS, MATTHEW M., and LISA J. FAUCI. "A computational model of the collective fluid dynamics of motile micro-organisms." Journal of Fluid Mechanics 455 (March 25, 2002): 149–74. http://dx.doi.org/10.1017/s0022112001007339.

Full text

Abstract:

A mathematical model and numerical method for studying the collective dynamics of geotactic, gyrotactic and chemotactic micro-organisms immersed in a viscous fluid is presented. The Navier–Stokes equations of fluid dynamics are solved in the presence of a discrete collection of micro-organisms. These microbes act as point sources of gravitational force in the fluid equations, and thus affect the fluid flow. Physical factors, e.g. vorticity and gravity, as well as sensory factors affect swimming speed and direction. In the case of chemotactic microbes, the swimming orientation is a function of

APA, Harvard, Vancouver, ISO, and other styles

49

Naidoo, Clarissa, Yougasphree Naidoo, and Yaser Hassan Dewir. "The Secretory Apparatus of Tabernaemontana ventricosa Hochst. ex A.DC. (Apocynaceae): Laticifer Identification, Characterization and Distribution." Plants 9, no. 6 (2020): 686. http://dx.doi.org/10.3390/plants9060686.

Full text

Abstract:

Due to the inconsistencies in the interpretation of laticifers within the Apocynaceae, the current study aimed to distinguish, for the first time, the type and distribution of the laticifers in the embryos, seedlings and adult plants of Tabernaemontana ventricosa (Forest Toad tree). The characterization and distribution of laticifers were determined using light and electron microscopy. The findings revealed the presence of articulated anastomosing laticifers. The laticifers were found to have originated from ground meristematic and procambium cells and were randomly distributed in all ground a

APA, Harvard, Vancouver, ISO, and other styles

50

Liptáková, A., K. Čurová, J. Záhumenský, K. Visnyaiová, and I. Varga. "Microbiota of female genital tract – functional overview of microbial flora from vagina to uterine tubes and placenta." Physiological Research 71, Suppl. 1 (2022): S21—S33. http://dx.doi.org/10.33549/physiolres.934960.

Full text

Abstract:

Microorganisms and eukaryotic human cells coexist in synergistic relationships in nearly every niche of the human body. The female genital tract consisting of the vagina, uterus with its cervix and endometrium, uterine tubes and ovaries – harbors its own typical microbiota, which accounts for 9 % of the total bacterial population in females. To this organ system, we also assigned the microbiome of the placenta, which has not been studied much until now. Among the spectrum of microbial species, the female genital tract is mainly dominated by Lactobacillus species, which are considered to be one

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!