scholarly journals The Impact of Biosurfactants on Microbial Cell Properties Leading to Hydrocarbon Bioavailability Increase

2018 ◽  
Vol 2 (3) ◽  
pp. 35 ◽  
Author(s):  
Ewa Kaczorek ◽  
Amanda Pacholak ◽  
Agata Zdarta ◽  
Wojciech Smułek
Keyword(s):  
Cell Surface ◽  
Surface Properties ◽  
Microbial Cell ◽  
Environment Pollution ◽  
Bioavailability Enhancement ◽  
Cell Surface Properties ◽  
The Common ◽  
The Impact

The environment pollution with hydrophobic hydrocarbons is a serious problem that requires development of efficient strategies that would lead to bioremediation of contaminated areas. One of the common methods used for enhancement of biodegradation of pollutants is the addition of biosurfactants. Several mechanisms have been postulated as responsible for hydrocarbons bioavailability enhancement with biosurfactants. They include solubilization and desorption of pollutants as well as modification of bacteria cell surface properties. The presented review contains a wide discussion of these mechanisms in the context of alteration of bioremediation efficiency with biosurfactants. It brings new light to such a complex and important issue.

scholarly journals How Capsular Exopolysaccharides Affect Cell Surface Properties of Lactic Acid Bacteria

2020 ◽  
Vol 8 (12) ◽  
pp. 1904
Author(s):  
Carsten Nachtigall ◽  
Cordula Vogel ◽  
Harald Rohm ◽  
Doris Jaros
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Cell Surface ◽  
Surface Properties ◽  
Cell Damage ◽  
Cell Surface Hydrophobicity ◽  
Textural Properties ◽  
Fermented Foods ◽  
Cell Surface Properties ◽  
The Impact

Some lactic acid bacteria are able to produce exopolysaccharides that, based on localization, can be distinguished in free and capsular or cell-bound exopolysaccharides (CPS). Up to now, the former were the focus of current research, mainly because of the technofunctional benefits they exhibit on fermented dairy products. On the other hand, CPS affect the surface properties of bacteria cells and thus also the textural properties of fermented foods, but data are very scarce. As the cell surface properties are strongly strain dependent, we present a new approach to investigate the impact of CPS on cell surface hydrophobicity and moisture load. CPS positive and negative Streptococcus thermophilus and Weissella cibaria were subjected to ultrasonication suitable to detach CPS without cell damage. The success of the method was verified by scanning electron and light microscopy as well as by cultivation experiments. Before applying ultrasonication cells with CPS exhibiting an increased hydrophilic character, enhanced moisture load, and faster water adsorption compared to the cells after CPS removal, emphasizing the importance of CPS on the textural properties of fermented products. The ultrasonic treatment did not alter the cell surface properties of the CPS negative strains.

Bifidobacterium longum and Bifidobacterium breve isolates from preterm and full term neonates: Comparison of cell surface properties

Anaerobe ◽  
2014 ◽  
Vol 28 ◽  
pp. 212-215 ◽  
Author(s):  
Valérie Andriantsoanirina ◽  
Anne-Claire Teolis ◽  
Liu Xin Xin ◽  
Marie Jose Butel ◽  
Julio Aires
Keyword(s):  
Cell Surface ◽  
Surface Properties ◽  
Bifidobacterium Longum ◽  
Full Term ◽  
Term Neonates ◽  
Bifidobacterium Breve ◽  
Cell Surface Properties

scholarly journals The post‐translational modification of the C lostridium difficile flagellin affects motility, cell surface properties and virulence

2014 ◽  
Vol 94 (2) ◽  
pp. 272-289 ◽  
Author(s):  
Alexandra Faulds‐Pain ◽  
Susan M. Twine ◽  
Evgeny Vinogradov ◽  
Philippa C. R. Strong ◽  
Anne Dell ◽  
...  
Keyword(s):  
Cell Surface ◽  
Surface Properties ◽  
Post Translational Modification ◽  
Cell Surface Properties

Changes in Cell Surface Properties of Shiga Toxigenic Escherichia coli by Quercus infectoria G. Olivier

2009 ◽  
Vol 72 (8) ◽  
pp. 1699-1704 ◽  
Author(s):  
SUPAYANG PIYAWAN VORAVUTHIKUNCHAI ◽  
SAKOL SUWALAK
Keyword(s):  
Escherichia Coli ◽  
Cell Surface ◽  
Surface Properties ◽  
Cell Surface Hydrophobicity ◽  
Ethanolic Extract ◽  
Bacterial Cells ◽  
Electron Microscopic ◽  
Cell Surface Properties ◽  
E Coli ◽  
Quercus Infectoria

The effects of Quercus infectoria (family Fagaceae) nutgalls on cell surface properties of Shiga toxigenic Escherichia coli (STEC) were investigated with an assay of microbial adhesion to hydrocarbon. The surface of bacterial cells treated with Q. infectoria exhibited a higher level of cell surface hydrophobicity (CSH) toward toluene than did the surface of untreated cells. With 50% ethanolic extract, the CSH of the three strains of STEC O157:H7 treated with 4× MIC of the extract resulted in moderate or strong hydrophobicity, whereas at 2× MIC and MIC, the CSH of only one strain of E. coli O157:H7 was significantly affected. The 95% ethanolic extract had a significant effect on CSH of all three strains at both 4× MIC and 2× MIC but not at the MIC. The effect on bacterial CSH was less pronounced with the other STEC strains. At 4× MIC, the 50% ethanolic extract increased the CSH of all non-O157 STEC strains significantly. At 2× MIC and 4× MIC, the 95% ethanolic extract affected the CSH of E. coli O26:H11 significantly but did not affect E. coli O111:NM or E. coli O22. Electron microscopic examination revealed the loss of pili in the treated cells. The ability of Q. infectoria extract to modify hydrophobic domains enables this extract to partition the lipids of the bacterial cell membrane, rendering the membrane more permeable and allowing leakage of ions and other cell contents, which leads to cell death. Further studies are required to evaluate the effects of Q. infectoria extract in food systems or in vivo and provide support for the use of this extract as a food additive for control of these STEC pathogens.

Effect of Glucopon 215 on cell surface properties of Pseudomonas stutzeri and diesel oil biodegradation

2015 ◽  
Vol 104 ◽  
pp. 129-135 ◽  
Author(s):  
Ewa Kaczorek ◽  
Wojciech Smułek ◽  
Agnieszka Zgoła-Grześkowiak ◽  
Katarzyna Bielicka-Daszkiewicz ◽  
Andrzej Olszanowski
Keyword(s):  
Cell Surface ◽  
Surface Properties ◽  
Pseudomonas Stutzeri ◽  
Diesel Oil ◽  
Cell Surface Properties ◽  
Oil Biodegradation
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