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Experimental adhesion of Geobacillus stearothermophilus and Anoxybacillus flavithermus to stainless steel compared with predictions from interaction models

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F19%3A43918588" target="_blank" >RIV/60461373:22330/19:43918588 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://link.springer.com/article/10.1007%2Fs11696-019-00880-0" target="_blank" >https://link.springer.com/article/10.1007%2Fs11696-019-00880-0</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/s11696-019-00880-0" target="_blank" >10.1007/s11696-019-00880-0</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Experimental adhesion of Geobacillus stearothermophilus and Anoxybacillus flavithermus to stainless steel compared with predictions from interaction models

  • Popis výsledku v původním jazyce

    Spore-forming thermophilic bacteria of the genus Geobacillus and Anoxybacillus are frequent contaminants in dairy industry. This study is the first attempt to apply models of physicochemical interactions (thermodynamic, DLVO, and XDLVO) to quantify their adhesion properties to stainless steel particles (SSP). The predictions of interaction models were compared with experimental data (contact angles, zeta potentials, size) regarding interacting surfaces (cells and SSP). Adhesion intensities (AI) were determined experimentally taking advantage of the magnetic properties of particulate stainless steel. The importance of weak physicochemical interactions was estimated by comparison of experimental AI with model predictions of colloidal interactions. The results revealed that the most reliable description of AI was obtained using the XDLVO model, including Lifshitz–van der Waals (LW), acid–base, and electrostatic (EL) interactions. The AI of cells to SSP at an ionic strength of 10 mM decreased in the order G. stearothermophilus DSM 456 &gt; A. flavithermus DSM 2641 &gt; G. stearothermophilus DSM 22, and the differences were statistically significant. At a higher ionic strength (100 mM), the highest AI was observed for A. flavithermus DSM 2641, but the differences between species studied were statistically insignificant. The main driving force for bacterial adhesion to SSP at 10 mM was EL interactions, while at 100 mM, the XDLVO model predicted favorable interactions between A. flavithermus DSM 2641 and SSP due to attractive LW forces. © 2019, Institute of Chemistry, Slovak Academy of Sciences.

  • Název v anglickém jazyce

    Experimental adhesion of Geobacillus stearothermophilus and Anoxybacillus flavithermus to stainless steel compared with predictions from interaction models

  • Popis výsledku anglicky

    Spore-forming thermophilic bacteria of the genus Geobacillus and Anoxybacillus are frequent contaminants in dairy industry. This study is the first attempt to apply models of physicochemical interactions (thermodynamic, DLVO, and XDLVO) to quantify their adhesion properties to stainless steel particles (SSP). The predictions of interaction models were compared with experimental data (contact angles, zeta potentials, size) regarding interacting surfaces (cells and SSP). Adhesion intensities (AI) were determined experimentally taking advantage of the magnetic properties of particulate stainless steel. The importance of weak physicochemical interactions was estimated by comparison of experimental AI with model predictions of colloidal interactions. The results revealed that the most reliable description of AI was obtained using the XDLVO model, including Lifshitz–van der Waals (LW), acid–base, and electrostatic (EL) interactions. The AI of cells to SSP at an ionic strength of 10 mM decreased in the order G. stearothermophilus DSM 456 &gt; A. flavithermus DSM 2641 &gt; G. stearothermophilus DSM 22, and the differences were statistically significant. At a higher ionic strength (100 mM), the highest AI was observed for A. flavithermus DSM 2641, but the differences between species studied were statistically insignificant. The main driving force for bacterial adhesion to SSP at 10 mM was EL interactions, while at 100 mM, the XDLVO model predicted favorable interactions between A. flavithermus DSM 2641 and SSP due to attractive LW forces. © 2019, Institute of Chemistry, Slovak Academy of Sciences.

Klasifikace

  • Druh

    J<sub>SC</sub> - Článek v periodiku v databázi SCOPUS

  • CEP obor

  • OECD FORD obor

    20101 - Civil engineering

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2019

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Chemical Papers

  • ISSN

    0366-6352

  • e-ISSN

  • Svazek periodika

    74

  • Číslo periodika v rámci svazku

    1

  • Stát vydavatele periodika

    SK - Slovenská republika

  • Počet stran výsledku

    8

  • Strana od-do

    297-304

  • Kód UT WoS článku

  • EID výsledku v databázi Scopus

    2-s2.0-85069510500