کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
607657 | 1454590 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Adhesion of B. subtilis spores and vegetative cells onto stainless steel - DLVO theories and AFM spectroscopy
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Adhesion of B. subtilis spores and vegetative cells onto stainless steel - DLVO theories and AFM spectroscopy Adhesion of B. subtilis spores and vegetative cells onto stainless steel - DLVO theories and AFM spectroscopy](/preview/png/607657.png)
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 405, 1 September 2013, Pages 233-241
Journal: Journal of Colloid and Interface Science - Volume 405, 1 September 2013, Pages 233-241
نویسندگان
Ardiyan Harimawan, Shaoping Zhong, Chwee-Teck Lim, Yen-Peng Ting,