A Nanoengineered Stainless Steel Surface to Combat Bacterial Attachment and Biofilm Formation
Nanopatterning and anti-biofilm characterization of self-cleanable surfaces on stainless steel substrates were demonstrated in the current study. Electrochemical etching in diluted aqua regia solution consisting of 3.6% hydrogen chloride and 1.2% nitric acid was conducted at 10 V for 5, 10, and 15 m...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/9/11/1518 |
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| author | Ga-Hee Ban Yong Li Marisa M. Wall Soojin Jun |
| author_facet | Ga-Hee Ban Yong Li Marisa M. Wall Soojin Jun |
| author_sort | Ga-Hee Ban |
| collection | DOAJ |
| description | Nanopatterning and anti-biofilm characterization of self-cleanable surfaces on stainless steel substrates were demonstrated in the current study. Electrochemical etching in diluted aqua regia solution consisting of 3.6% hydrogen chloride and 1.2% nitric acid was conducted at 10 V for 5, 10, and 15 min to fabricate nanoporous structures on the stainless steel. Variations in the etching rates and surface morphologic characteristics were caused by differences in treatment durations; the specimens treated at 10 V for 10 min showed that the nanoscale pores are needed to enhance the self-cleanability. Under static and realistic flow environments, the populations of <i>Escherichia coli</i> O157:H7 and <i>Salmonella</i> Typhimurium on the developed features were significantly reduced by 2.1–3.0 log colony-forming unit (CFU)/cm<sup>2</sup> as compared to bare stainless steel (<i>p</i> < 0.05). The successful fabrication of electrochemically etched stainless steel surfaces with Teflon coating could be useful in the food industry and biomedical fields to hinder biofilm formation in order to improve food safety. |
| first_indexed | 2024-03-10T15:25:15Z |
| format | Article |
| id | doaj.art-07335ae7e3c3491eacc662d14d500e45 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T15:25:15Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-07335ae7e3c3491eacc662d14d500e452023-11-20T18:05:13ZengMDPI AGFoods2304-81582020-10-01911151810.3390/foods9111518A Nanoengineered Stainless Steel Surface to Combat Bacterial Attachment and Biofilm FormationGa-Hee Ban0Yong Li1Marisa M. Wall2Soojin Jun3Department of Human Nutrition, Food, and Animal Sciences, University of Hawaii, 1955 East-West Road, Honolulu, HI 96822, USADepartment of Human Nutrition, Food, and Animal Sciences, University of Hawaii, 1955 East-West Road, Honolulu, HI 96822, USADaniel K. Inouye U.S. Pacific Basin Agricultural Research Center, 64 Nowelo Street, Hilo, HI 96720, USADepartment of Human Nutrition, Food, and Animal Sciences, University of Hawaii, 1955 East-West Road, Honolulu, HI 96822, USANanopatterning and anti-biofilm characterization of self-cleanable surfaces on stainless steel substrates were demonstrated in the current study. Electrochemical etching in diluted aqua regia solution consisting of 3.6% hydrogen chloride and 1.2% nitric acid was conducted at 10 V for 5, 10, and 15 min to fabricate nanoporous structures on the stainless steel. Variations in the etching rates and surface morphologic characteristics were caused by differences in treatment durations; the specimens treated at 10 V for 10 min showed that the nanoscale pores are needed to enhance the self-cleanability. Under static and realistic flow environments, the populations of <i>Escherichia coli</i> O157:H7 and <i>Salmonella</i> Typhimurium on the developed features were significantly reduced by 2.1–3.0 log colony-forming unit (CFU)/cm<sup>2</sup> as compared to bare stainless steel (<i>p</i> < 0.05). The successful fabrication of electrochemically etched stainless steel surfaces with Teflon coating could be useful in the food industry and biomedical fields to hinder biofilm formation in order to improve food safety.https://www.mdpi.com/2304-8158/9/11/1518electrochemical etchingnanotechnologystainless steelantibiofilm<i>Escherichia coli</i> O157:H7<i>Salmonella</i> Typhimurium |
| spellingShingle | Ga-Hee Ban Yong Li Marisa M. Wall Soojin Jun A Nanoengineered Stainless Steel Surface to Combat Bacterial Attachment and Biofilm Formation Foods electrochemical etching nanotechnology stainless steel antibiofilm <i>Escherichia coli</i> O157:H7 <i>Salmonella</i> Typhimurium |
| title | A Nanoengineered Stainless Steel Surface to Combat Bacterial Attachment and Biofilm Formation |
| title_full | A Nanoengineered Stainless Steel Surface to Combat Bacterial Attachment and Biofilm Formation |
| title_fullStr | A Nanoengineered Stainless Steel Surface to Combat Bacterial Attachment and Biofilm Formation |
| title_full_unstemmed | A Nanoengineered Stainless Steel Surface to Combat Bacterial Attachment and Biofilm Formation |
| title_short | A Nanoengineered Stainless Steel Surface to Combat Bacterial Attachment and Biofilm Formation |
| title_sort | nanoengineered stainless steel surface to combat bacterial attachment and biofilm formation |
| topic | electrochemical etching nanotechnology stainless steel antibiofilm <i>Escherichia coli</i> O157:H7 <i>Salmonella</i> Typhimurium |
| url | https://www.mdpi.com/2304-8158/9/11/1518 |
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