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

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

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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

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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.

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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

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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.

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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

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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.

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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

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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.

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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

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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.

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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

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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.

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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

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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.

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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.

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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.

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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

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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.

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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

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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.

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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

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Dissertations / Theses on the topic "Micro-organisms, microbial polysaccharides, cells"

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Zapadnyuk, Yuliya, and Yuliya Zapadnyuk. "Effects of fungicides on the formation of polysaccharides." Thesis, Молодь у глобалізованому світі: академічні аспекти англомовних фахових досліджень (англ. мовою) / Укл., ред. А.І.Раду: збірник мат. конф. - Львів: ПП "Марусич", 2011. - 147 с, 2011. http://er.nau.edu.ua/handle/NAU/20768.

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Book chapters on the topic "Micro-organisms, microbial polysaccharides, cells"

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Kausar, Rizwana, and Faiz Ur Rahman. "Influence of micro-organisms on the electrochemical process of microbial fuel cells." In Microbial Fuel Cells. IOP Publishing, 2022. http://dx.doi.org/10.1088/978-0-7503-4791-4ch11.

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Mosaad Khattab, Abdelrahman. "The Microbial Degradation for Pectin." In Pectins - The New-Old Polysaccharides. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.100247.

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Pectin considers one of the most plentiful natural components having many applications. It is widely distributed in the middle lamella and cell walls of the terrestrial plant in various concentrations. Pectin is a heteropolysaccharide that involved galacturonic acid and methanol as the main components. Pectin is degraded by the pectinase enzyme, producing several compounds that have industrial applications. This Enzyme is produced by several organisms such as plants, protozoa, nematodes, insects, and microorganisms. However, the microbial source is the most common in commercial production due

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Jha, Harit, and Ragini Arora. "Application of Fungal Xylanase Enzymes." In Mushrooms: A Wealth of Nutraceuticals and An Agent of Bioremediation. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815080568123010013.

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The enzyme xylanase breaks down the linear polysaccharide β-1,4-xylan into xylose, therefore breaking down hemicellulose, one of the primary components of plant cell walls. It is essential for the breakdown of plant materials into usable nutrients by microorganisms that thrive on plant sources. Fungi, bacteria, yeast, marine algae, protozoans, snails, crustaceans, insects, seeds, and other organisms generate xylanases. However, the amount of xylanase produced by fungal cultures is generally significantly larger than that produced by yeasts or bacteria. There is a growing demand for low-cost mi

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Sheppard, Charles. "5. Microbial engines of the coral reef." In Coral Reefs: A Very Short Introduction. Oxford University Press, 2021. http://dx.doi.org/10.1093/actrade/9780198869825.003.0005.

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The symbiosis between corals and the dinoflagellates—zooxanthellae—is the key to a tight recycling of nutrients on reefs that generally thrive best in nutrient poor parts of the oceans. But several other mechanisms and species groups aid transmission of organic matter and energy along the numerous food chains of a reef. Viruses, bacteria, and archaea are key to the recycling of carbon and organic compounds, making the ‘microbial loop’, one key but invisible aspect to how the reef functions. Cyanobacteria, formerly blue-green algae, are a major part of the micro-benthos too, and are important p

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Mishra, Sonal, Neha Kumari, and Rajeshwar P. Sinha. "Micro-Algae as a Source of Food and Bioactive Compounds for Human Health." In Algal Functional Foods and Nutraceuticals: Benefits, Opportunities, and Challenges. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815051872122010015.

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Micro-algae are a rich natural source of highly valuable bioactive compounds like mycosporine-like amino acids (MAAs), scytonemin, carotenoids, vitamins, essential amino acids (EAAs), polyunsaturated fatty acids (PUFAs), minerals, polysaccharides, lectins, halogenated compounds, polyketides, agar-agar, alginic acid, carrageenan, enzymes and fibers. These compounds are involved in several defense strategies helping organisms to survive in various extreme environmental conditions, such as high salinity, high and low temperatures and deleterious solar radiation. Furthermore, they are promising bi

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Thomas, Jibu, and S. Jerusha Pealin Grace. "Reconnoitering Cell Factories of Marine Algae for Antimicrobials." In Frontiers in Antimicrobial Agents. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815080148123030009.

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Antimicrobial compounds are groups consistent with the microorganisms that they could potentially act against bacteria or fungi. It is expected to kill microorganisms or inhibit their growth and activity. As the case of antimicrobial resistance increases, nature has been generous in providing compounds with the potential to treat various ailments and infectious diseases. Bacteria, fungi and plants are known to own a good list of antibacterial molecules. Although research has been carried out to reveal the antimicrobial potential of natural products, the significance of vast terrestrial and mar

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Hahn, Michael G., Alan Darvill, Peter Albersheim, et al. "Preparation and Characterization of Oligosaccharide Elicitors of Phytoalexin Accumulation." In Molecular Plant Pathology. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780199633524.003.0008.

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Abstract Plants utilize a variety of defence responses when confronted with invasive micro-organisms (1, 2). These defence reponses include such diverse mechanisms as the synthesis and accumulation of low molecular weight anti-microbial compounds called phytoalexins (3-6), the production of glycosyl hydrolases capable of attacking microbial surface polymers (7), the synthesis of proteins that inhibit microbial degradative enzymes (8, 9), and the modification of plant cell walls by deposition of callose (10, 11), hydroxyproline-rich glycoproteins (12, 13), and/or lignin (14).Biochemical analysi

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Babaniyi, Babafemi Raphael, Babaniyi Ebunoluwa Elizabeth, Oluwafunmilayo Racheal Sunday, and Samuel O. Thompson. "Chemical Formation of Biofilms in Drug Development." In Quorum Quenching. Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/bk9781837671380-00001.

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Bacterial cells demonstrate two major modes of growth, which are planktonic cells and sessile aggregates, called biofilms. Biofilms are aggregations of micro-organisms where cells fused to one another form a matrix secreted into the extracellular environment which form in multiple biological and ecological environments. The formation of a biofilm entails dynamic processes which require a concurrent series of mechanisms. Over 75% of all infections are affected by microbial biofilms. The main four ways that biofilms have an effect are through promoting the development of antimicrobial drug resis

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Oxford, John, Paul Kellam, and Leslie Collier. "Resistance of the human body to virus infections." In Human Virology. Oxford University Press, 2016. http://dx.doi.org/10.1093/hesc/9780198714682.003.0005.

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This chapter recounts the scientific investigation of immunology that started about a century ago with Élie Metchnikof’s studies of phagocytosis of foreign particles, including micro-organisms. This early interest in cell-mediated immunity (CMI) was soon overtaken by research on antibody-mediated (humoral) immunity, which was for long regarded as the primary defence against microbial disease. The chapter highlights the presence of antibody as this is important in preventing virus infections and cellular immunity. This plays a major role in the immune response once infection has been establishe

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Harrison, Maria J., Ar Vind D. Choudhary, Michael A. Lawton, Christopher J. Lamb,, and Richard A. Dixon. "Analysis of defence gene transcriptional regulation." In Molecular Plant Pathology. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780199631032.003.0012.

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Abstract A major question in molecular plant pathology is how exposure of plant cells to elicitors, or infection with micro-organisms, induces the appearance of defence gene transcripts leading to the accumulation of antimicrobial barriers. A number of defence response genes have now been cloned (see Appendix Al), and this has facilitated the analysis of transcriptional activation in response to microbial stimuli. Standard techniques of in vitro translation, Northern blotting, and RNAase- or S1 nuclease- protection can be used for the measurement of translatable mRNA activities and steady-stat

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Conference papers on the topic "Micro-organisms, microbial polysaccharides, cells"

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Price, Andy. "Novel DNA Extraction and Preservation for Identification of Micro-organisms On-site Using Novel Nucleic Acid Extraction Cards for the Oil and Gas Industry." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01758.

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Abstract Traditional microbiological methods based on culturing procedures such as the Most Probable Number (MPN) technique have been used for many years to monitor microbial numbers in oilfield samples. However, such methods are far from ideal as it is estimated that only 0.01–10% of all micro-organisms present in environmental samples are culturable by these methods. In addition, without further extensive procedures being carried out, such methods cannot identify the variety of micro-organisms in the sample. Molecular microbiological methods (MMM) negate such problems, providing information

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