Log in

Relevant bibliographies by topics / Microorganisme extracellulaire / Journal articles

To see the other types of publications on this topic, follow the link: Microorganisme extracellulaire.

Journal articles on the topic 'Microorganisme extracellulaire'

Author: Grafiati

Published: 15 June 2024

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 'Microorganisme extracellulaire.'

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

Park, Jeong-Su, and Jong-Moon Jeong. "Characterization of Extracellular Cholesterol Oxidase Produced from Soil Microorganism." Journal of the Korean Society of Food Science and Nutrition 37, no. 11 (2008): 1507–14. http://dx.doi.org/10.3746/jkfn.2008.37.11.1507.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Pugsley, A. P. "Extracellular enzymes of microorganisms." Annales de l'Institut Pasteur / Microbiologie 139, no. 2 (1988): 274. http://dx.doi.org/10.1016/0769-2609(88)90013-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Beeler, Erik, Nicholas Choy, Jonathan Franks, Francis Mulcahy, and Om V. Singh. "Extracellular Synthesis and Characterization of Silver Nanoparticles from Alkaliphilic Pseudomonas sp." Journal of Nanoscience and Nanotechnology 20, no. 3 (2020): 1567–77. http://dx.doi.org/10.1166/jnn.2020.16496.

Full text

Abstract:

Bio-nanotechnology offers eco-friendly processes for the synthesis of stable nanoparticles (NPs). We hypothesized that microorganisms isolated from the root nodules of leguminous plants would biosynthesize silver (Ag) bio-nanoparticles. Clover root nodules enriched with nutrient broth (NB) produced four distinct colonies on NA plates. Microbial colonies were purified by repeated streaking and designated as SS6, SS7, SS8, and SS9 for identification using 16S rRNA sequencing. Four species of Pseudomonas were identified with a similarity score of over 99% using the EZ Taxon search engine, and tes

APA, Harvard, Vancouver, ISO, and other styles

4

Ortiz, Martha L. "Aproximaciones a la comprensión de la degradación de la lignina." Orinoquia 13, no. 2 (2009): 137–44. http://dx.doi.org/10.22579/20112629.208.

Full text

Abstract:

Titulo en ingles: Approaches to understanding lignin degradation.RESUMEN: El objetivo de esta revisión es reunir los hallazgos más recientes que aportan a la comprensión de las rutas metabólicas que intervienen en la degradación del biopolímero más recalcitrante del planeta: la lignina. Esta le proporcionó a las plantas resistencia mecánica en sus tejidos para colonizar la tierra y una barrera fisicoquímica ante la infección microbiana. Debido a su naturaleza recalcitrante, la lignina es el precursor principal para la síntesis de la reserva de materia orgánica del suelo, regulando el ciclo del

APA, Harvard, Vancouver, ISO, and other styles

5

Guevara-Luna, Joseph, Iván Arroyo-Herrera, Yanely Bahena-Osorio, Brenda Román-Ponce, and María Soledad Vásquez-Murrieta. "Suelos salinos: fuente de microorganismos halófilos asociados a plantas y resistentes a metales." Alianzas y Tendencias BUAP 5, no. 17 (2020): 29–51. https://doi.org/10.5281/zenodo.5093123.

Full text

Abstract:

<strong>RESUMEN</strong> La salinidad en los suelos representa una extensión de 1128 millones de hectáreas a nivel mundial, teniendo en cuenta la superficie afectada de manera natural (primaria) o inducida por el hombre (secundaria). Por lo que se estima una tendencia a aumentar en los próximos años, representando un problema en la actividad agrícola debido a los cambios fisiológicos y bioquímicos en el metabolismo de las plantas; afectando la producción de alimentos. Es por ello, que las investigaciones en la actualidad buscan nuevas man

APA, Harvard, Vancouver, ISO, and other styles

6

Bhola, Rahul, Shaily M. Bhola, Brajendra Mishra, and David L. Olson. "Microbiologically influenced corrosion and its mitigation: (A review)." Material Science Research India 7, no. 2 (2010): 407–12. http://dx.doi.org/10.13005/msri/070210.

Full text

Abstract:

The microbiologically influenced corrosion (MIC) is one of the most common forms of corrosion that results from the presence and activity of microorganisms. The presence of microorganism aids in the formation of a bio film and constitutes various bacterial cells, extracellular polymeric substrates (EPS) and corrosion products. In this paper, a review on the importance of MIC and various ways to mitigate has been introduced; a brief description of the physical, chemical, electrochemical and biological mitigation methods for MIC has been included and EPS formation mechanism, chemical composition

APA, Harvard, Vancouver, ISO, and other styles

7

Filio-Rodríguez, Georgina, Iris Estrada-García, Patricia Arce-Paredes, et al. "In vivo induction of neutrophil extracellular traps by Mycobacterium tuberculosis in a guinea pig model." Innate Immunity 23, no. 7 (2017): 625–37. http://dx.doi.org/10.1177/1753425917732406.

Full text

Abstract:

In 2004, a novel mechanism of cellular death, called ‘NETosis’, was described in neutrophils. This mechanism, different from necrosis and apoptosis, is characterized by the release of chromatin webs admixed with microbicidal granular proteins and peptides (NETs). NETs trap and kill a variety of microorganisms. Diverse microorganisms, including Mycobacterium tuberculosis, are NET inducers in vitro. The aim of this study was to examine whether M. tuberculosis can also induce NETs in vivo and if the NETs are bactericidal to the microorganism. Guinea pigs were intradermally inoculated with M. tube

APA, Harvard, Vancouver, ISO, and other styles

8

El-Registan, G. I., A. L. Mulyukin, Yu A. Nikolaev, N. E. Suzina, V. F. Gal’chenko, and V. I. Duda. "Adaptogenic functions of extracellular autoregulators of microorganisms." Microbiology 75, no. 4 (2006): 380–89. http://dx.doi.org/10.1134/s0026261706040035.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lemos, Marco F. L., Illyane S. M. Lima, Kaori L. da Fonseca, Hugo R. Monteiro, and Ana C. Esteves. "Extracellular enzymatic activity from tributyltin resistant microorganisms." Current Opinion in Biotechnology 22 (September 2011): S80. http://dx.doi.org/10.1016/j.copbio.2011.05.239.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Castro, Guillermo R., Adrián O. Stettler, Marcela A. Ferrero, and Faustino Siñeriz. "Selection of an extracellular esterase-producing microorganism." Journal of Industrial Microbiology 10, no. 3-4 (1992): 165–68. http://dx.doi.org/10.1007/bf01569761.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Speziale, Pietro, Carla Renata Arciola, and Giampiero Pietrocola. "Fibronectin and Its Role in Human Infective Diseases." Cells 8, no. 12 (2019): 1516. http://dx.doi.org/10.3390/cells8121516.

Full text

Abstract:

Fibronectin is a multidomain glycoprotein ubiquitously detected in extracellular fluids and matrices of a variety of animal and human tissues where it functions as a key link between matrices and cells. Fibronectin has also emerged as the target for a large number of microorganisms, particularly bacteria. There are clear indications that the binding of microorganism’ receptors to fibronectin promotes attachment to and infection of host cells. Each bacterium may use different receptors which recognize specific fibronectin domains, mostly the N-terminal domain and the central cell-binding domain

APA, Harvard, Vancouver, ISO, and other styles

12

Carneiro, Celia Regina Whitaker, and Jose Daniel Lopes. "Microorganisms-extracellular matrix interactions: relation to pathogenicity - review." Memórias do Instituto Oswaldo Cruz 86, suppl 3 (1991): 37–41. http://dx.doi.org/10.1590/s0074-02761991000700007.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Ewert, Marcela, and Jody Deming. "Sea Ice Microorganisms: Environmental Constraints and Extracellular Responses." Biology 2, no. 2 (2013): 603–28. http://dx.doi.org/10.3390/biology2020603.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Shi, Liang, Hailiang Dong, Gemma Reguera, et al. "Extracellular electron transfer mechanisms between microorganisms and minerals." Nature Reviews Microbiology 14, no. 10 (2016): 651–62. http://dx.doi.org/10.1038/nrmicro.2016.93.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Millach, Laia, Antoni Solé, and Isabel Esteve. "Role ofGeitlerinemasp. DE2011 andScenedesmussp. DE2009 as Bioindicators and Immobilizers of Chromium in a Contaminated Natural Environment." BioMed Research International 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/519769.

Full text

Abstract:

The aim of this work was to study the potential of the two phototrophic microorganisms, both isolated from Ebro Delta microbial mats, to be used as bioindicators and immobilizers of chromium. The results obtained indicated that (i) the Minimum Metal Concentration (MMC) significantly affecting Chlorophyllaintensity inGeitlerinemasp. DE2011 andScenedesmussp. DE2009 was 0.25 µM and 0.75 µM, respectively, these values being lower than those established by current legislation, and (ii)Scenedesmussp. DE2009 was able to immobilize chromium externally in extracellular polymeric substances (EPS) and in

APA, Harvard, Vancouver, ISO, and other styles

16

Özçoban, Afranur, Ayşe İlayda Boyacı, and Hale İnci Öztürk. "Microbial Exopolysaccharides, Their Structures, Formation Mechanisms, and Effects on Human Health: Food-Related Microorganisms." Turkish Journal of Agriculture - Food Science and Technology 12, s2 (2024): 2429–40. https://doi.org/10.24925/turjaf.v12is2.2429-2440.6955.

Full text

Abstract:

A biofilm is a complex matrix formed by microorganisms that includes exopolysaccharides, proteins, extracellular DNA, various enzymes, and the microorganisms themselves. Biofilm cell is a more stable form of microorganism than planktonic cell. Microbial cells attach themselves to the surface after certain signals or changes, colonize to create a more favorable environment for their growth and viability, and secrete exopolysaccharide. This component is the basic matrix of biofilm. The diversity of exopolysaccharides within biofilms varies significantly depending on their specific composition, c

APA, Harvard, Vancouver, ISO, and other styles

17

Sahu, Sudarshan, Avinash Sharma, Soham Mukherjee, et al. "Role of Nanofibers in Encapsulation of the Whole Cell." International Journal of Polymer Science 2021 (November 24, 2021): 1–9. http://dx.doi.org/10.1155/2021/4250122.

Full text

Abstract:

In the field of biomaterial research, the electrospinning device is now used to manufacture nanofibers that can be used to encapsulate whole microorganisms such as bacterial cells, funguses, viruses, and even spores. The nanofiber encapsulated cells will have greater significance in the coming future because of their wide variety of applications in various fields. Nanofibers act as microorganism reservoir systems that enhance their properties such as viability, controlled release of products, biomedical applications, and bioremediation. The effect of electrostatic forces on a droplet of liquid

APA, Harvard, Vancouver, ISO, and other styles

18

Nadar, Sahaya, Tabassum Khan, Simon G. Patching, and Abdelwahab Omri. "Development of Antibiofilm Therapeutics Strategies to Overcome Antimicrobial Drug Resistance." Microorganisms 10, no. 2 (2022): 303. http://dx.doi.org/10.3390/microorganisms10020303.

Full text

Abstract:

A biofilm is a community of stable microorganisms encapsulated in an extracellular matrix produced by themselves. Many types of microorganisms that are found on living hosts or in the environment can form biofilms. These include pathogenic bacteria that can serve as a reservoir for persistent infections, and are culpable for leading to a broad spectrum of chronic illnesses and emergence of antibiotic resistance making them difficult to be treated. The absence of biofilm-targeting antibiotics in the drug discovery pipeline indicates an unmet opportunity for designing new biofilm inhibitors as a

APA, Harvard, Vancouver, ISO, and other styles

19

Menegazzi, Renzo, Eva Decleva, and Pietro Dri. "Killing by neutrophil extracellular traps: fact or folklore?" Blood 119, no. 5 (2012): 1214–16. http://dx.doi.org/10.1182/blood-2011-07-364604.

Full text

Abstract:

AbstractNeutrophil extracellular traps (NETs) are DNA structures released by dying neutrophils and claimed to constitute a new microbicidal mechanism. Killing by NET-forming cells is ascribed to these structures because it is prevented by preincubation with DNase, which has been shown to dismantle NETs, before addition of the target microorganisms. Curiously, the possibility that the microorganisms ensnared in NETs are alive has not been considered. Using Staphylococcus aureus and Candida albicans blastospores, we demonstrate that the microorganisms captured by NETs and thought to be killed ar

APA, Harvard, Vancouver, ISO, and other styles

20

Vermelho, Alane Beatriz, Maria Nazareth Leal Meirelles, Andréa Lopes, Simone Dias Gonçalves Petinate, André Adriano Chaia, and Marta Helena Branquinha. "Detection of extracellular proteases from microorganisms on agar plates." Memórias do Instituto Oswaldo Cruz 91, no. 6 (1996): 755–60. http://dx.doi.org/10.1590/s0074-02761996000600020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Loperena, Lyliam, Verónica Soria, Hermosinda Varela, et al. "Extracellular enzymes produced by microorganisms isolated from maritime Antarctica." World Journal of Microbiology and Biotechnology 28, no. 5 (2012): 2249–56. http://dx.doi.org/10.1007/s11274-012-1032-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Martens, D. A., and W. T. Frankenberger. "Saccharide composition of extracellular polymers produced by soil microorganisms." Soil Biology and Biochemistry 23, no. 8 (1991): 731–36. http://dx.doi.org/10.1016/0038-0717(91)90142-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Tramice, Annabella, Adele Cutignano, Annalaura Iodice, Annarita Poli, Ilaria Finore, and Giuseppina Tommonaro. "Involvement of a Quorum Sensing Signal Molecule in the Extracellular Amylase Activity of the Thermophilic Anoxybacillus amylolyticus." Microorganisms 9, no. 4 (2021): 819. http://dx.doi.org/10.3390/microorganisms9040819.

Full text

Abstract:

Anoxybacillus amylolyticus is a moderate thermophilic microorganism producing an exopolysaccharide and an extracellular α-amylase able to hydrolyze starch. The synthesis of several biomolecules is often regulated by a quorum sensing (QS) mechanism, a chemical cell-to-cell communication based on the production and diffusion of small molecules named “autoinducers”, most of which belonging to the N-acyl homoserine lactones’ (AHLs) family. There are few reports about this mechanism in extremophiles, in particular thermophiles. Here, we report the identification of a signal molecule, the N-butanoyl

APA, Harvard, Vancouver, ISO, and other styles

24

Doster, Ryan S., Lisa M. Rogers, Jennifer A. Gaddy, and David M. Aronoff. "Macrophage Extracellular Traps: A Scoping Review." Journal of Innate Immunity 10, no. 1 (2017): 3–13. http://dx.doi.org/10.1159/000480373.

Full text

Abstract:

Tissue macrophages are derived from either circulating blood monocytes that originate in the bone marrow, or embryonic precursors that establish residence in tissues and are maintained independent of bone marrow progenitors. Macrophages perform diverse functions including tissue repair, the maintenance of homeostasis, and immune regulation. Recent studies have demonstrated that macrophages produce extracellular traps (ETs). ETs are an immune response by which a cell undergoes “ETosis” to release net-like material, with strands composed of cellular DNA that is studded with histones and cellular

APA, Harvard, Vancouver, ISO, and other styles

25

Sukhina, M. A., I. A. Kalashnikova, V. N. Kashnikov, A. V. Veselov, V. I. Mikhalevskaya, and A. Yu Piyadina. "EFFECT OF ANTIMICROBIAL AGENTS ON THE BIOFILM GROWTH OF CLINICAL ISOLATES." Koloproktologia, no. 2 (June 30, 2018): 78–84. http://dx.doi.org/10.33878/2073-7556-2018-0-2-78-84.

Full text

Abstract:

OBJECTIVE. To study the effect of active extracellular substances of lactobacilli and antimicrobial agents on the inhibition and destruction of the biofilms formed clinically relevant microorganism strains. MATERIALS AND METHODS. The study of the impact of different agents on the biofilmformation and growth was carried out on resistant clinical strains of microorganisms obtainedfrom patients with post-surgical infectious inflammatory complications. We used wound dressing solution, cutaneous antiseptic, filtrates of 19 clinical strains of lactobacilli and a strain of Lactobacillus plantarum fro

APA, Harvard, Vancouver, ISO, and other styles

26

Mejía-Manzano, Luis Alberto, Patricia Vázquez-Villegas, Luis Vicente Prado-Cervantes, et al. "Advances in Material Modification with Smart Functional Polymers for Combating Biofilms in Biomedical Applications." Polymers 15, no. 14 (2023): 3021. http://dx.doi.org/10.3390/polym15143021.

Full text

Abstract:

Biofilms as living microorganism communities are found anywhere, and for the healthcare sector, these constitute a threat and allied mechanism for health-associated or nosocomial infections. This review states the basis of biofilms and their formation. It focuses on their relevance for the biomedical sector, generalities, and the major advances in modified or new synthesized materials to prevent or control biofilm formation in biomedicine. Biofilm is conceptualized as an aggregate of cells highly communicated in an extracellular matrix, which the formation obeys to molecular and genetic basis.

APA, Harvard, Vancouver, ISO, and other styles

27

Wang, Xiaohai, Zhuanzhuan Shi, Zhikai Wang та Xiaoshuai Wu. "Electromagnetic Field Drives the Bioelectrocatalysis of γ-Fe2O3-Coated Shewanella putrefaciens CN32 to Boost Extracellular Electron Transfer". Materials 17, № 7 (2024): 1501. http://dx.doi.org/10.3390/ma17071501.

Full text

Abstract:

The microbial hybrid system modified by magnetic nanomaterials can enhance the interfacial electron transfer and energy conversion under the stimulation of a magnetic field. However, the bioelectrocatalytic performance of a hybrid system still needs to be improved, and the mechanism of magnetic field-induced bioelectrocatalytic enhancements is still unclear. In this work, γ-Fe2O3 magnetic nanoparticles were coated on a Shewanella putrefaciens CN32 cell surface and followed by placing in an electromagnetic field. The results showed that the electromagnetic field can greatly boost the extracellu

APA, Harvard, Vancouver, ISO, and other styles

28

Jia, Fangxu, Qing Yang, Xiuhong Liu, et al. "Stratification of Extracellular Polymeric Substances (EPS) for Aggregated Anammox Microorganisms." Environmental Science & Technology 51, no. 6 (2017): 3260–68. http://dx.doi.org/10.1021/acs.est.6b05761.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Nied, Maieli Maiara, Rodrigo Alex Arthur, Ewelyn De Freitas Farias, and Sandra Liana Henz. "Effect of Stevia rebaudiana Bertoni infusion on enamel demineralization and dental biofilm formation: an in-situ study." Revista da Faculdade de Odontologia de Porto Alegre 63, no. 2 (2023): 12–23. http://dx.doi.org/10.22456/2177-0018.126520.

Full text

Abstract:

Aim: Stevia rebaudiana Bertoni (Stevia) is a natural non-caloric sweetener that can modify the cariogenicity of biofilms. This study aimed to evaluate the effect of Stevia infusion in microbial and biochemical composition of biofilms formed in the presence of sucrose and on enamel demineralization. Materials and Methods: In a cross-over design, eleven volunteers wore an intraoral palatal appliance containing 4 slabs of bovine enamel during 3 phases of 7 days each. Sucrose solution (20%) was dripped onto slabs 8 times/day and 0.9% sodium chloride (NaCl), 0.12% chlorhexidine (CHX), or 5% infusio

APA, Harvard, Vancouver, ISO, and other styles

30

Kovalenko, Olexandra, Yaroslav Kizim, and Natalia Voroshylova. "EXTRACELLULAR POLYMERIC SUBSTANCE OF BIOFILMS IN THE FORMATION OF ANTIMICROBIAL RESISTANCE OF MICROORGANISMS." Ukrainian Scientific Medical Youth Journal, no. 2(110) (June 27, 2019): 6–12. http://dx.doi.org/10.32345/usmyj.2(110).2019.6-12.

Full text

Abstract:

Abstract. The analysis of modern literature data on the mechanisms of the formation of antibiotic resistance and the role of extracellular polymeric substance in biofilms, which are the main form of microbial existence. The role of extracellular polymeric substance in limiting of the effect of unfavorable factors as well as the regularity and necessity of its formation for the community of microorganisms were discussed. The position on the permanent character of phenotype dispersion of microorganisms is postulated. This dispersion doesn’t provide the formation of more resistant strains only, b

APA, Harvard, Vancouver, ISO, and other styles

31

Kravtsov, A. L. "ROLE OF NEUTROPHIL EXTRACELLULAR TRAPS IN ESPECIALLY DANGEROUS BACTERIAL INFECTIONS." Journal of microbiology, epidemiology and immunobiology, no. 4 (August 28, 2016): 95–104. http://dx.doi.org/10.36233/0372-9311-2016-4-95-104.

Full text

Abstract:

Novel data on neutrophil extracellular traps (NET), carrying out capture and killing of pathogenic microorganisms with higher effectiveness than during phagocytosis, are presented. A contemporary view on how neutrophils choose intracellular (phagocytosis) or extracellular (NETosis) mechanism of bactericidity during interaction with pathogenic microorganisms is given. Experimental data on the presence in causative agents of plague, cholera and melioidosis of mechanisms of protection from bactericidal effect of NET, as well as NET’S role in regulation of immune response and sepsis development ar

APA, Harvard, Vancouver, ISO, and other styles

32

PEIL, GREICE H. S., ANELISE V. KUSS, ANDRÉS F. G. RAVE, JOSÉ P. V. VILLARREAL, YOHANA M. L. HERNANDES, and PATRÍCIA S. NASCENTE. "Bioprospecting of lipolytic microorganisms obtained from industrial effluents." Anais da Academia Brasileira de Ciências 88, no. 3 suppl (2016): 1769–79. http://dx.doi.org/10.1590/0001-3765201620150550.

Full text

Abstract:

ABSTRACT The lipases have ability to catalyze diverse reactions and are important in different biotechnological applications. The aim of this work was to isolate and characterize microorganisms that produce lipases, from different food industry effluents localized in Pelotas, RS/Brazil. Bacteria were identified using Gram stain and biochemical tests (Vitek 2(r)). Fungi were identified according to macro and micromorphology characteristics. The extracellular lipase production was evaluated using the Rhodamine B test and the enzymatic activity by titration. Twenty-one bacteria were isolated and

APA, Harvard, Vancouver, ISO, and other styles

33

Mallika, dondapati, pushpam dara Lilly, and Jattavathu Madhavi. "Bioprospecting of Marine Fungi for Production of Extracellular Protease." International Journal of Current Science Research and Review 07, no. 10 (2024): 7830–36. https://doi.org/10.5281/zenodo.13939367.

Full text

Abstract:

Abstract : Proteases from microorganisms have attracted much attention in the last decade because of their gigantic potential in various industrial processes due to their proteolytic activity such as detergent, textile, leather, dairy, and pharmaceutical preparations. However, proteolytic enzymes from microorganisms are preferred in the industrial application of enzymes due to their technical and economic advantages. In the present research work, protease-producing microorganisms were isolated from marine soil samples and screened for protease-producing ability using skim milk agar. Among twen

APA, Harvard, Vancouver, ISO, and other styles

34

Liu, Yiwen, Lai Peng, Shu-Hong Gao, Xiaohu Dai, and Bing-Jie Ni. "Mathematical modeling of microbial extracellular electron transfer by electrically active microorganisms." Environmental Science: Water Research & Technology 1, no. 6 (2015): 747–52. http://dx.doi.org/10.1039/c5ew00155b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Ezeagu, G. G., M. Fadayomi, and U. S. Rikiji. "Cellulolytic potentials of aspergillus oryzae and streptomyces griseus isolated from waste dump soil in Nile University Of Nigeria, Abuja." Science World Journal 19, no. 1 (2024): 189–93. http://dx.doi.org/10.4314/swj.v19i1.25.

Full text

Abstract:

The potential of using microorganisms as biological sources of industrially economic enzymes has stimulated interest in the exploitation of extracellular enzymatic activity in several microorganisms. The aim of this research is to assess the cellulose degrading potentials of two microorganisms, Aspergillus oryzae and Streptomyces griseus using cellulose Congo red agar media. Soil sample collected from waste dump was serially diluted and inoculated in starch casein agar and SDA to isolate S. griseus and A. oryzae respectively. To assess their potentials to utilize cellulose, each of the two mic

APA, Harvard, Vancouver, ISO, and other styles

36

Dormaar, J. F., and R. C. Foster. "Nascent aggregates in the rhizosphere of perennial ryegrass (Lolium perenne L.)." Canadian Journal of Soil Science 71, no. 4 (1991): 465–74. http://dx.doi.org/10.4141/cjss91-045.

Full text

Abstract:

Since there is little information on compound particles in the size range 2–20 μm, the genesis of the initial stages of soil aggregation was examined by transmission electron microscopy on ultrathin sections of the rhizospheres of Lolium perenne L. grown in attapulgite. Since attapulgite contains neither microorganisms nor organic matter, microorganisms were added as a soil suspension and all the organic matter was supplied by the ryegrass roots. Clusters were formed de novo by accumulation of attapulgite particles on root gel, on root cell fragments, and on microbial extracellular polysacchar

APA, Harvard, Vancouver, ISO, and other styles

37

Li, Yiyong, Wanyi Luo, Wen Liu, et al. "C058 and Other Functional Microorganisms Promote the Synthesis of Extracellular Polymer Substances in Mycelium Biofloc." Catalysts 12, no. 7 (2022): 693. http://dx.doi.org/10.3390/catal12070693.

Full text

Abstract:

The mycelium biofloc bioaugmented by Cordyceps strain C058 effectively purifies water, which may be related to the synthesis of extracellular polymer substances. To verify this conjecture, we analyzed the changes in extracellular polymer substances content in the mycelium biofloc under various hydraulic retention times (36 h, 18 h, and 11 h). The microstructure and microflora composition were analyzed using a scanning electron microscope and high-throughput sequencing. The ordinary biofloc without bioaugmentation was taken as a control. The results showed that under the above hydraulic retenti

APA, Harvard, Vancouver, ISO, and other styles

38

Blé, Yatanan Casimir. "Antibiotic resistance of Aeromonas hydrophila isolated from frog Hoplobatrachus occipitalis consumed in Côte d'Ivoire." International Journal of Biosciences (IJB) 24, no. 3 (2024): 42–49. https://doi.org/10.12692/ijb/24.3.42-49.

Full text

Abstract:

<em>Aeromonas hydrophila</em> is an opportunistic microorganism. It is widely involved in frog infections. <em>Hoplobatrachus occipitalis </em>is the species of frog most consumed in the different localities of Côte d’Ivoire. This research aimed to study the extracellular virulence factors and antibiotic resistance profiles of <em>A.</em> <em>hydrophila</em> strains isolated from <em>H. occipitalis. </em>The determination of extracellular virulence factors were performed onto 113 strains of <em>A. hydrophila</em> isolated from frogs

APA, Harvard, Vancouver, ISO, and other styles

39

Wang, Xinyu, Pengna Wang, Hancheng Zhao, Yingying He, Changfeng Qu, and Jinlai Miao. "Heterologous Expression and Functional Verification of Extracellular Carbonic Anhydrases in Bacillus safensis yw6 from Mariana Trench." Molecules 29, no. 24 (2024): 5911. https://doi.org/10.3390/molecules29245911.

Full text

Abstract:

The exploration and exploitation of deep-sea microbial resources is of great scientific value for understanding biological evolution under extreme conditions. Deep-sea microorganisms are critical in the ocean carbon cycle, and marine heterotrophic microorganisms secrete extracellular carbonic anhydrase (CA) to fix inorganic carbon, an important process in climate regulation. Extracellular CA provides a green method for fixing carbon dioxide into stable minerals containing Ca2+. However, studies on extracellular CA in deep-sea microorganisms are limited. In this study, Bacillus safensis yw6 was

APA, Harvard, Vancouver, ISO, and other styles

40

Nevin, Kelly P., and Derek R. Lovley. "Mechanisms for Accessing Insoluble Fe(III) Oxide during Dissimilatory Fe(III) Reduction by Geothrix fermentans." Applied and Environmental Microbiology 68, no. 5 (2002): 2294–99. http://dx.doi.org/10.1128/aem.68.5.2294-2299.2002.

Full text

Abstract:

ABSTRACT Mechanisms for Fe(III) oxide reduction were investigated in Geothrix fermentans, a dissimilatory Fe(III)-reducing microorganism found within the Fe(III) reduction zone of subsurface environments. Culture filtrates of G. fermentans stimulated the reduction of poorly crystalline Fe(III) oxide by washed cell suspensions, suggesting that G. fermentans released one or more extracellular compounds that promoted Fe(III) oxide reduction. In order to determine if G. fermentans released electron-shuttling compounds, poorly crystalline Fe(III) oxide was incorporated into microporous alginate bea

APA, Harvard, Vancouver, ISO, and other styles

41

Calabrese, Salvatore, Binayak P. Mohanty, and Ashish A. Malik. "Soil microorganisms regulate extracellular enzyme production to maximize their growth rate." Biogeochemistry 158, no. 3 (2022): 303–12. http://dx.doi.org/10.1007/s10533-022-00899-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Kremnický, L., E. Sláviková, D. Mislovičová та P. Biely. "Production of extracellular β-mannanases by yeasts and yeast-like microorganisms". Folia Microbiologica 41, № 1 (1996): 43–47. http://dx.doi.org/10.1007/bf02816339.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

El-Sousy, Sara M., Saadia M. Easa, Amira A. Hassan, and Abdel-Mohsen S. Ismail. "Production of a bacterial extracellular L-glutaminase possessing high antioxidant capability." Egyptian Pharmaceutical Journal 20, no. 1 (2021): 59–71. http://dx.doi.org/10.4103/epj.epj_51_20.

Full text

Abstract:

Background and objectives L-glutaminase has utmost practical importance in many fields, such as medicine, pharmacy, and some industries as an effective antioxidant, anticancer, flavor enhancer, and used as an analytical reagent in the determination of glutamate and glutamine. The objective of the present article was to formulate the production medium and to pinpoint the proper growth conditions for the most potent microorganism producing highly active glutaminase enzyme. The general properties of the crude enzyme preparation were determined to detect the proper conditions for enzyme activity.

APA, Harvard, Vancouver, ISO, and other styles

44

Jia, X. S., Herbert H. P. Fang, and H. Furumai. "Surface charge and extracellular polymer of sludge in the anaerobic degradation process." Water Science and Technology 34, no. 5-6 (1996): 309–16. http://dx.doi.org/10.2166/wst.1996.0565.

Full text

Abstract:

Changes of surface charge and extracellular polymer (ECP) content were investigated in batch experiments for three anaerobic sludges, each of which had been enriched at 35°C and pH 639-7.3 for more than 40 batches using propionate, butyrate and glucose, individually, as the sole substrate. Results showed that both ECP and the negative surface charge were dependent on the growth phase of microorganisms. They increased at the beginning of all batches when the microorganisms were in the prolific-growth phase, having high substrate concentration and food-to-microorganisms ratio. Both later gradual

APA, Harvard, Vancouver, ISO, and other styles

45

Pallares, Roger M., Nguyen T. K. Thanh, and Xiaodi Su. "Tunable plasmonic colorimetric assay with inverse sensitivity for extracellular DNA quantification." Chemical Communications 54, no. 80 (2018): 11260–63. http://dx.doi.org/10.1039/c8cc05465g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Akamine, Ingrid Teixeira, Felipe R. P. Mansoldo, Verônica S. Cardoso, Edilma Paraguai de Souza Dias, and Alane Beatriz Vermelho. "Hydrolase Activities of Sourdough Microorganisms." Fermentation 9, no. 8 (2023): 703. http://dx.doi.org/10.3390/fermentation9080703.

Full text

Abstract:

Sourdough is renowned for improving bakery products’ nutritional and quality characteristics through the enzymes produced by its microbiota. Among the enzymatic framework present in sourdough fermentation, amylase, cellulase, and peptidase are responsible for many of the properties valued in sourdough products. Furthermore, there is an increasing concern regarding the allergenic potential of gluten, which motivates the investigation of enzymatic gluten hydrolysis. This study aimed to select probiotics, isolate and identify microorganisms from sourdough, and assess their amylase, cellulase, and

APA, Harvard, Vancouver, ISO, and other styles

47

Kumar Srivastava, Ajeet, Lingayya Hiremath, S. Narendra Kumar, and A. V. Narayan. "BIOCONVERSION OF LIGNOCELLULOSIC BIOMASS TO ETHANOL USING DIFFERENT MICROORGANISMS." International Journal of Advanced Research 10, no. 7 (2022): 885–93. http://dx.doi.org/10.21474/ijar01/15109.

Full text

Abstract:

Lignocellulosic material that includes hemicellulose, cellulose and lignin (lignocellulosic complex) is present in the plant cells. The hydrolysis process of the lignocellulose biomass into glucose in the presence of lignocellulytic enzymes is an area of concern in the production process of cellulosic biofuel. Microorganisms like fungi have the ability for degrading the plant cell wall by an enzyme set which acts in coordination. This moves in a direction to release glucose freely. Another challenge is the modification in the plant cell architecture. Along with this, the capacity of microorgan

APA, Harvard, Vancouver, ISO, and other styles

48

Lenchenko, Ekaterina M., Dmitry A. Blumenkrants, Vladislav V. Ponomarev, Inna B. Pavlova, and Galina S. Tolmacheva. "METHODOLOGICAL ASPECTS OF RESEARCH OF COMPOSITION OF BIOFILMS in vitro, ex vivo, in vivo." Problems of veterinary sanitation, hygiene and ecology 1, no. 41 (2022): 73–82. http://dx.doi.org/10.36871/vet.san.hyg.ecol.202201009.

Full text

Abstract:

The article presents the general patterns of formation of a three-dimensional multilayer heterogeneous structure biofilms in vitro, ex vivo, in vivo. It was found, that the mass fraction of cells of biofilms was 86,8-91,4%, of the matrix – 8,9-13,2%, which is due to the structure of the cell wall of microorganisms synthesizing the extracellular matrix. The advantages of transmission and scanning electron microscopy are the visualization of L-shapes and the quantitative assessment of the diameter, perimeter, height, area, volume and chemical composition of cells and the extracellular matrix of

APA, Harvard, Vancouver, ISO, and other styles

49

Highsmith, Anita K., Phuong Nhan Le, Rima F. Khabbaz, and Van P. Munn. "Characteristics of Pseudomonas aeruginosa Isolated From Whirlpools and Bathers." Infection Control 6, no. 10 (1985): 407–12. http://dx.doi.org/10.1017/s0195941700063499.

Full text

Abstract:

AbstractPseudomonas aeruginosa is the most frequently isolated microorganism from whirlpool water and lesions associated with outbreaks of dermatitis and folliculitis related to whirlpool exposure. Strains were selected from 19 outbreaks of P. aeruginosa infections (1977 to 1983) associated with whirlpool use; they were examined to determine if the strains possessed unique virulence factors or characteristics that might aid in their selection in the environment.P. aeruginosa, 011, was the predominant serotype isolated from whirlpool water as well as from bathers with dermatitis or folliculitis

APA, Harvard, Vancouver, ISO, and other styles

50

WAGNER, EVA M., SARAH THALGUTER, MARTIN WAGNER, and KATHRIN RYCHLI. "Presence of Microbial Contamination and Biofilms at a Beer Can Filling Production Line." Journal of Food Protection 84, no. 5 (2021): 896–902. http://dx.doi.org/10.4315/jfp-20-368.

Full text

Abstract:

ABSTRACT Contamination of beer arises in 50% of all events at the late stages of production, in the filling area. This is where biofilms, a consortia of microorganisms embedded in a matrix composed of extracellular polymeric substances, play a critical role. To date, most studies have focused on the presence of (biofilm-forming) microorganisms in the filling environment. Our aim was to characterize the microbial status as well as the presence of possible biofilms at a can filling line for beer by determining the presence of microorganisms and their associated matrix components (carbohydrates,

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!