Inhibition of bacterial adherence on stainless steel coupons by surface conditioning with selected polar lipids

2022 ◽  
Author(s):  
Nguyen Manh Dat ◽  
Thai Minh Phuong ◽  
Nguyen Thi Thu ◽  
Thai Khanh Phong ◽  
Toshitaka Uchino
Keyword(s):  
Stainless Steel ◽  
Bacterial Adherence ◽  
Polar Lipids ◽  
Surface Conditioning

Surface conditioning of stainless steel coupons with skim milk, buttermilk, and butter serum solutions and its effect on bacterial adherence

Food Control ◽  
2014 ◽  
Vol 42 ◽  
pp. 94-100 ◽  
Author(s):  
Nguyen Manh Dat ◽  
Le Duc Manh ◽  
Daisuke Hamanaka ◽  
Duong Van Hung ◽  
Fumihiko Tanaka ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Skim Milk ◽  
Bacterial Adherence ◽  
Surface Conditioning

Surface conditioning of stainless steel coupons with skim milk solutions at different pH values and its effect on bacterial adherence

Food Control ◽  
2010 ◽  
Vol 21 (12) ◽  
pp. 1769-1773 ◽  
Author(s):  
Nguyen Manh Dat ◽  
Daisuke Hamanaka ◽  
Fumihiko Tanaka ◽  
Toshitaka Uchino
Keyword(s):  
Stainless Steel ◽  
Skim Milk ◽  
Bacterial Adherence ◽  
Surface Conditioning ◽  
Ph Values

SURFACE CONDITIONING OF CARDIOVASCULAR 316L STAINLESS STEEL STENTS: A REVIEW

2016 ◽  
Vol 24 (01) ◽  
pp. 1730002 ◽  
Author(s):  
LUCILA NAVARRO ◽  
JULIO LUNA ◽  
IGNACIO RINTOUL
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
316L Stainless Steel ◽  
Abrupt Change ◽  
Outer Part ◽  
Ion Release ◽  
Aisi 316L Stainless Steel ◽  
Surface Conditioning ◽  
Physical Chemical ◽  
Review Reports

Cardiovascular disease is the leading cause of death worldwide and 90% of coronary interventions consists in stenting procedures. Most of the implanted stents are made of AISI 316L stainless steel (SS). Excellent mechanical properties, biocompatibility, corrosion resistance, workability and statistically demonstrated medical efficiency are the reasons for the preference of 316L SS over any other material for stent manufacture. However, patients receiving 316L SS bare stents are reported with 15–20% of restenosis probability. The decrease of the restenosis probability is the driving force for a number of strategies for surface conditioning of 316L SS stents. This review reports the latest advances in coating, passivation and the generation of controlled topographies as strategies for increasing the corrosion resistance and reducing the ion release and restenosis probability on 316L SS stents. Undoubtedly, the future of technique is related to the elimination of interfaces with abrupt change of properties, the elimination of molecules and any other phase somehow linked to the metal substrate. And leaving the physical, chemical and topographical smart modification of the outer part of the 316L SS stent for enhancing the biocompatiblization with endothelial tissues.

Evaluation of Asparagine in the AOAC Use-Dilution Method

1986 ◽  
Vol 69 (6) ◽  
pp. 1003-1005
Author(s):  
Eugene C Cole ◽  
William A Rutala
Keyword(s):  
Stainless Steel ◽  
Bacterial Adherence ◽  
Dilution Method ◽  
And Storage

Abstract An asparagine solution (0.1%) is required in the AOAC use-dilution method to cover stainless steel carriers during sterilization and storage. The rationale for using an asparagine soak is unclear. It has been proposed that asparagine enhances bacterial adherence to carriers or inhibits corrosion of the metal carriers or both. The former theory was assessed in this study by comparing bacterial adherence on seeded carriers stored in 0.1 and 1% asparagine solution to those stored dry or in water. The anticorrosive properties of asparagine on stainless steel carriers were microscopically evaluated after 9 months. The results demonstrate that asparagine neither enhances bacterial adherence to carriers nor is necessary to prevent corrosion.

Growth Media and Surface Conditioning Influence the Adherence of Pseudomonas fragi, Salmonella typhimurium, and Listeria monocytogenes Cells to Stainless Steel

1997 ◽  
Vol 60 (9) ◽  
pp. 1034-1037 ◽  
Author(s):  
SCOTT K. HOOD ◽  
EDMUND A. ZOTTOLA
Keyword(s):  
Stainless Steel ◽  
Listeria Monocytogenes ◽  
Salmonella Typhimurium ◽  
Skim Milk ◽  
Epifluorescence Microscopy ◽  
Growth Media ◽  
Pseudomonas Fragi ◽  
Acridine Orange Staining ◽  
Surface Conditioning ◽  
Food Contact Surfaces

Microorganisms have been shown to adhere to food-contact surfaces and may provide a route for the contamination of processed food. To better understand this phenomenon, the effects of growth media and surface conditioning on the adherence of Pseudomonas fragi, Salmonella typhimurium and Listeria monocytogenes cells to stainless steel were studied. The microorganisms were grown in tryptic soy broth (TSB), 1% reconstituted skim milk (RSM) and RSM with 1% sucrose (RSM + S). Stainless-steel surfaces were conditioned by immersion in growth media for 1 h and then were rinsed in phosphate-buffered saline (PBS) prior to the adherence assay. After growing in each medium, cells were harvested, resuspended in PBS, and then allowed to contact the stainless steel for 30 min. Adherence was quantified by acridine orange-staining the cells and viewing under epifluorescence microscopy. Growth media had little influence on adherence to stainless steel that had not been preconditioned. P. fragi and L. monocytogenes cells adhered in the highest numbers when grown in RSM plus sucrose. S. typhimurium cells showed the highest level of adherence when grown in TSB. Analysis of variance yielded P values of less than 0.01, indicating that both growth media and surface conditioning were significant in the level of adherence observed.

scholarly journals Development of Technology for Vacuum Surface Conditioning by RF Plasma Discharge Combined With DC Discharge

2021 ◽  
Vol 17 (4) ◽  
pp. 33-43
Author(s):  
Yurii Kovtun ◽  
Gennadiy Glazunov ◽  
Vladimir Moiseenko ◽  
Sergiy Maznichenko ◽  
Mikhaylo Bondarenko ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Glow Discharge ◽  
Radio Frequency ◽  
Vacuum Chamber ◽  
Rf Discharge ◽  
Rf Plasma ◽  
Steel 12Kh18n10t ◽  
Basic Part ◽  
Surface Conditioning ◽  
Dc Discharge

Introduction. It is important to decrease light and heavy impurities influxes towards the plasma volume during the high temperature plasma experiments in fusion devices. This is why the conditioning of the wall inner vacuumsurfaces is a basic part of the fusion device operation.Problem Statement. The conventional inner vacuum chamber surface conditioning methods has a significant drawback: sputtering materials in a vacuum chamber. The inner vacuum surfaces can be also conditioned with radio-frequency (RF) discharge plasma, but the conditioning effectiveness is limited by low ion energy.Purpose. The purpose of this research is to develop vacuum surface conditioning technology by the radio frequency plasma combined with DC discharge. Materials and Methods. The noncontact passive method of optical plasma spectroscopy has been used to estimate ion plasma composition. The stainless steel outgassing has been determined in situ with the thermodesorption probe method. The sputtering of the samples has been measured with the weight loss method.Results. The studies of combined discharge have shown that: the anode voltage of combined discharge is lower than in case of the glow discharge; the stainless steel 12Kh18N10T erosion coefficient is about 1.5 times less in thecase of combined discharge than in the glow one; the thermal desorption diagnostic of wall conditions in the DSM-1 has shown better efficiency with the combined discharge as compared with the glow discharge. Theproposed technology is an original one and has no analogs.Conclusions. The reported research results have shown good prospects for the combined discharge usage for plasma walls conditioning and opportunities for using the combined discharge technology for big fusion machines.

NiAl precipitation in Fe-12w/o Cr-5w/o Ni-4w/o Al

1983 ◽  
Vol 41 ◽  
pp. 202-203
Author(s):  
L.E. Murr ◽  
J.S. Dunning ◽  
S. Shankar
Keyword(s):  
Solid Solution ◽  
Stainless Steel ◽  
Stainless Steels ◽  
Alloy Composition ◽  
Chromium Content ◽  
Scale Up ◽  
Optical Metallography ◽  
Property Evaluation ◽  
310 Stainless Steel ◽  
Microstructural Studies

Aluminum additions to conventional 18Cr-8Ni austenitic stainless steel compositions impart excellent resistance to high sulfur environments. However, problems are typically encountered with aluminum additions above about 1% due to embrittlement caused by aluminum in solid solution and the precipitation of NiAl. Consequently, little use has been made of aluminum alloy additions to stainless steels for use in sulfur or H2S environments in the chemical industry, energy conversion or generation, and mineral processing, for example.A research program at the Albany Research Center has concentrated on the development of a wrought alloy composition with as low a chromium content as possible, with the idea of developing a low-chromium substitute for 310 stainless steel (25Cr-20Ni) which is often used in high-sulfur environments. On the basis of workability and microstructural studies involving optical metallography on 100g button ingots soaked at 700°C and air-cooled, a low-alloy composition Fe-12Cr-5Ni-4Al (in wt %) was selected for scale up and property evaluation.

Comparison of Recovery and Recrystallization in Stainless Steel Following Plane-Wave Shock Loading and Explosive Forming

1970 ◽  
Vol 28 ◽  
pp. 428-429 ◽  
Author(s):  
J. A. Korbonski ◽  
L. E. Murr
Keyword(s):  
Stainless Steel ◽  
Shock Loading ◽  
Pressure Pulse ◽  
Shock Pressure ◽  
304 Stainless Steel ◽  
Strain Rates ◽  
Two Dimensional ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Explosive Forming

Comparison of recovery rates in materials deformed by a unidimensional and two dimensional strains at strain rates in excess of 104 sec.−1 was performed on AISI 304 Stainless Steel. A number of unidirectionally strained foil samples were deformed by shock waves at graduated pressure levels as described by Murr and Grace. The two dimensionally strained foil samples were obtained from radially expanded cylinders by a constant shock pressure pulse and graduated strain as described by Foitz, et al.

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