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Chemical engineering science v.160, 2017년, pp.396 - 418   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Mechanistic understanding of non-spherical bacterial attachment and deposition on plant surface structures

Warning, Alexander D. (Corresponding author. ); Datta, Ashim K. ( );
  • 초록  

    Abstract Bacterial attachment to the surface and passive internalization to fresh produce is the first step in contamination of food. Understanding the mechanism of attachment and internalization could lead to the prevention of future outbreaks on fresh fruits and vegetables. The goal of this model was to validate and use a Lagrangian particle tracking simulation of a spherocylinder shaped bacteria, Escherichia coli , to determine the effect plant surface structures have on attachment. Rotation of the cells was validated versus theoretical and experimental data. Also, simulation results of attachment were validated versus experimentally measured cells to microfabricated plant structures: stomata, trichomes and grooves. The simulation results showed how trichomes decreased attachment by lowering shear stress within the microarray while stomata and grooves enhanced attachment by creating small regions of increased shear stress triggering shear enhanced adhesion. Microstructures affecting the local fluid shear stress, and not residence time, increased attachment. Highlights Simulation validated for translational and rotational motion. Trichomes decrease and stomata increase overall attachment. Attachment to trichomes predominately normal to flow. Attachment to stomata and grooves upstream and downstream of flow.


  • 주제어

    Fresh produce .   Shear rate .   Stomata .   Trichome.  

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