Please use this identifier to cite or link to this item:
|Title:||Adhesion of B. subtilis spores and vegetative cells onto stainless steel - DLVO theories and AFM spectroscopy|
|Citation:||Harimawan, A., Zhong, S., Lim, C.-T., Ting, Y.-P. (2013-09-01). Adhesion of B. subtilis spores and vegetative cells onto stainless steel - DLVO theories and AFM spectroscopy. Journal of Colloid and Interface Science 405 : 233-241. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jcis.2013.05.031|
|Abstract:||Interactions between the bacterium Bacillus subtilis (either as vegetative cells or as spores) and stainless steel 316 (SS-316) surfaces were quantified using the classical Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and extended DLVO (xDLVO) approach in conjunction with live force spectroscopy using an Atomic Force Microscope (AFM). The xDLVO approach accounts for acid-base (polar) interactions that are not considered in the classical DLVO theory. AFM results revealed that spores manifested stronger attraction interactions to stainless steel compared to their vegetative cells counterparts due to lower energy barrier as predicted by both the theoretical approaches as well as the higher hydrophobicity on the spore surfaces. Both DLVO and xDLVO theories predict that vegetative cells manifest weaker attachment on the surfaces compared to spores. Results of AFM force measurement corroborate these findings; spores recorded significantly higher adhesion force (2.92 ± 0.4. nN) compared to vegetative cells (0.65 ± 0.2. nN). The adhesion of spores presents greater challenges in biofilm control owing to its stronger attachment and persistence when the spores are formed under adverse environmental conditions. © 2013 Elsevier Inc.|
|Source Title:||Journal of Colloid and Interface Science|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Aug 8, 2018
WEB OF SCIENCETM
checked on Jul 31, 2018
checked on Aug 3, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.