Wetting/spreading on porous media and on deformable, soluble structured substrates as a model system for studying the effect of morphology on biofilms wetting and for assessing anti-biofilm methods

Zabiegaj, Dominika; Duilio, Angela; Guido, Stefano; Caserta, Sergio; Kostoglou, Margaritis; Petala, Maria; Karapantsios, Thodoris D.; Trybała, Anna

doi:10.1016/j.cocis.2021.101426

Cited by 12 publications

(10 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Contact angles of sessile droplets on hydrophilic microbial lawns, after an initial dehydration step, have frequently been used in physicochemical models as a measure of microbial cell surface structure . The wetting of such biofilms is seen as a powerful tool to investigate the complexity of biofilm morphology and its capability to interact with external liquids . This is so because wetting of such biofilms is accompanied by liquid imbibition (capillarity-driven flow in the pores left behind after dehydration), simultaneously with (re)hydration of dried solid matter.…”

Section: Introductionmentioning

confidence: 99%

“…Wetting of biofilms by external liquids represents a largely unexplored research field. 23 It must be stressed that bacterial adhesion, proliferation, and spreading over a surface to create a biofilm, which for brevity in literature is sometimes called wetting of biofilm, is different from the wetting of a biofilm by an external liquid that we deal with herein. In our case, the biofilm itself is the substrate on which wetting occurs.…”

Section: ■ Introductionmentioning

confidence: 99%

“…41 The wetting of such biofilms is seen as a powerful tool to investigate the complexity of biofilm morphology and its capability to interact with external liquids. 23 This is so because wetting of such biofilms is accompanied by liquid imbibition (capillarity-driven flow in the pores left behind after dehydration), simultaneously with (re)hydration of dried solid matter. Even in the absence of solid mass rehydration, wetting together with imbibition is a quite complex process where several wetting states can be distinguished depending on the applied conditions.…”

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wetting of Dehydrated Hydrophilic Pseudomonas fluorescens Biofilms under the Action of External Body Forces

et al. 2021

Self Cite

View full text Add to dashboard Cite

Wetting of dehydrated Pseudomonas f luorescens biofilms grown on glass substrates by an external liquid is employed as a means to investigate the complex morphology of these biofilms along with their capability to interact with external fluids. The porous structure left behind after dehydration induces interesting droplet spreading on the external surface and imbibition into pores upon wetting. Static contact angles and volume loss by imbibition measured right upon droplet deposition indicate that biofilms of higher incubation times show a higher porosity and effective hydrophilicity. Furthermore, during subsequent rotation tests, using Kerberos device, these properties dictate a peculiar forced wetting/spreading behavior. As rotation speed increases a long liquid tail forms progressively at the rear part of the droplet, which stays pinned at all times, while only the front part of the droplet depins and spreads. Interestingly, the experimentally determined retention force for the onset of droplet sliding on biofilm external surface is lower than that on pure glass. An effort is made to describe such complex forced wetting phenomena by presenting apparent contact angles, droplet length, droplet shape contours, and edges position as obtained from detailed image analysis.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wetting of Dehydrated Hydrophilic Pseudomonas fluorescens Biofilms under the Action of External Body Forces

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Practices used to cope with bacterial biofilms are associated with the prevention of bacterial adhesion, the inactivation of biofilm bacteria, and most commonly the removal of the entire biofilm, avoiding the remaining residue on the surface that is attached. 19,20 The application of aquatic biocides on biofilms is a common practice leading to their partial or complete removal. It has been suggested that unsuccessful removal or inactivation of biofilms is closely related to the poor wetting behavior of antimicrobial agents on biofilm-coated surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…Infections related to bacterial contamination due to the development of biofilms in drinking water systems have been confirmed at the international level in both underdeveloped and developed countries, while such biofilms are also responsible for degraded taste and odor of water, biocorrosion problems, and failures of water pipes, fittings, valves, and so forth. , Likewise, in industrial processes, biofilms may be responsible for misfunctions of equipment or even the poor quality of the final product. Practices used to cope with bacterial biofilms are associated with the prevention of bacterial adhesion, the inactivation of biofilm bacteria, and most commonly the removal of the entire biofilm, avoiding the remaining residue on the surface that is attached. , …”

Section: Introductionmentioning

confidence: 99%

Wetting and Imbibition Characteristics of Pseudomonas fluorescens Biofilms Grown on Stainless Steel

et al. 2022

Self Cite

View full text Add to dashboard Cite

This study aims to provide insights into biofilm resistance associated with their structural properties acquired during formation and development. On this account, the wetting and imbibition behavior of dehydrated Pseudomonas fluorescens biofilms grown on stainless steel electropolished substrates is thoroughly examined at different biofilm ages. A polar liquid (water) and a non-polar liquid (diiodomethane) are employed as wetting agents in the form of sessile droplets. A mathematical model is applied to appraise the wetting and imbibition performance of biofilms incorporating the evaporation of sessile droplets. The present results show that the examined biofilms are hydrophilic. The progressive growth of biofilms leads to a gradual increase of substrate surface coverage�up to full coverage�accompanied by a gradual decrease of biofilm surface roughness. It is noteworthy that just after 24 h of biofilm growth, the surface roughness increases about 6.7 times the roughness of the clean stainless steel surface. It is further found that the imbibition of liquid in the biofilm matrix is restricted only to the biofilm region under the sessile droplet. The lack of further capillary imbibition into the biofilm structure, beyond the droplet deposition region, implies that the biofilm matrix is not in the form of an extended network of interconnected micro/nanopores. All in all, the present results indicate a resilient biofilm structure to biocide penetration despite its hydrophilic nature.

show abstract

Microbial Influenced Corrosion: Understanding Bioadhesion and Biofilm Formation

Pal

Lavanya

2022

J Bio Tribo Corros

View full text Add to dashboard Cite

Microbiologically influenced corrosion, also known as microbial or biological corrosion, is produced by particular bacteria adhering to metal in water. It is widely acknowledged to be the direct cause of catastrophic corrosion failures, with associated damage costs accounting to many billions of US$ annually. Certain activities of microbial organisms such as their adherence capabilities are known to lead to the acceleration in corrosion rates of metals. Bacterial adherence is the beginning of the process of colonisation of a surface, known as biofilm development that involves physicochemical and molecular interactions. This process of bacterial adhesion is influenced by a myriad of parameters which are broadly categorised as environment, bacterial, and material characteristics. The following article reviews the mechanisms of bacterial adhesion to biomaterial surfaces, the factors affecting this adhesion, and the techniques used in estimating microbially influenced corrosion.

show abstract

Wetting/spreading on porous media and on deformable, soluble structured substrates as a model system for studying the effect of morphology on biofilms wetting and for assessing anti-biofilm methods

Cited by 12 publications

References 96 publications

Wetting of Dehydrated Hydrophilic Pseudomonas fluorescens Biofilms under the Action of External Body Forces

Wetting of Dehydrated Hydrophilic Pseudomonas fluorescens Biofilms under the Action of External Body Forces

Wetting and Imbibition Characteristics of Pseudomonas fluorescens Biofilms Grown on Stainless Steel

Microbial Influenced Corrosion: Understanding Bioadhesion and Biofilm Formation

Contact Info

Product

Resources

About