Evaluation of chlorines' impact on biofilms on scratched stainless steel surfaces

Lomander, Andrea; Schreuders, Paul; Russek‐Cohen, Estelle; Ali, Laila

doi:10.1016/j.biortech.2004.01.004

Cited by 52 publications

(31 citation statements)

References 31 publications

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“…Chlorine is known to work primarily against proteins (Schwach and Zottola, 1984) and also depolymerizes exopolymeric substances (Kumar and Arand, 1998). Sodium hypochlorite is a chlorine compound used as a disinfectant and its bactericidal effect is based on the penetration of the chemical and its strong oxidative action on essential enzymes in the cell (Lomander et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Developing application and detection methods for Listeria monocytogenes and fish extract on open surfaces in order to optimize cleaning protocols

Whitehead

Benson

2015

Food and Bioproducts Processing

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a b s t r a c tSurfaces in the food industry are often fouled with bacteria and organic materials. A range of fouling and testing methods using two Listeria monocytogenes strains (Scott A and N53-1) and organic material (0.4 g/ml fish extract) were designed to determine the efficacy of two different cleaning methods (spray and wipe) in 1% sodium hypochlorite. The optimum method for applying the cells and organic material to substrata occurred when the cells and organic material were mixed together, dried onto the surface and stained. As the number of cleaning and re-foulings increased, cells were removed from the surfaces but the organic material remained. The pattern of organic material retention was different on the surfaces with the different cleaning protocols, but neither method was better at removing the retained organic material. More cells were removed from the surfaces by the spray than the spray with wipe clean.There was no difference in cell number retention for either of the L. monocytogenes strains. These findings are valid for a 'dirty material' as classified in BS EN1276. To determine cleaning method efficacy, the application of cells and organic material to a surface is important, as is the detection methods used.

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Section: Introductionmentioning

confidence: 99%

Developing application and detection methods for Listeria monocytogenes and fish extract on open surfaces in order to optimize cleaning protocols

Whitehead

Benson

2015

Food and Bioproducts Processing

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“…Although increasing addition concentration of ClO 2 is used for improving biocide inhibition effect in a certain period of time, however this inhibition action can not be enhanced infinitely. Lomander et al showed that the penetration ability of chlorine biocides in the biofilm was finite, more obvious inhibition effect on biofilm growth could not achieved, even if high concentration chlorine was added and a certain concentration of residual chlorine was kept (Lomander et al 2004). So, increasing addition amount of ClO 2 continually after reaching MIC in the process of actual operation, the inhibition effect on the biofilm can not be enhanced obviously, on the contrary, which will result in the increase of the operation cost and the subsequent water pollution.…”

Section: Antimicrobial Effect Of Clo 2 On Biofilmmentioning

confidence: 98%

Effect of oxidizing and non-oxidizing biocides on biofilm at different substrate levels in the model recirculating cooling water system

Liu

Chang

Yang

et al. 2011

World J Microbiol Biotechnol

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With the reducing of water resources, using advanced treated refinery wastewater as recirculating cooling water is an effective method to save water and to reduce the pollution of petroleum and petrochemical industry. However, the control of biofilm is a bottleneck in the application of this technology. To resolve the problem of biofilm formation and development, antimicrobial characteristics of chlorine dioxide and benzyldimethyldodecyl-ammonium chloride on biofilm at different substrate levels were investigated. Biofilm detachment ratio and TTC-dehydrogenase activity (DHA) were two indexes to discuss the antimicrobial effects. The results showed that at the high substrate level, the biofilms characteristics (biomass, the content of protein, polysaccharide and EPS) were the higher than those at the medium and low substrate levels, however biofilm's DHA at the medium substrate level (12.97 lgTF/(g h)) was higher than those at the medium substrate level (7.64 lgTF/(g h)) and low substrate level (1.94 lgTF/(g h). The difference of substrate level in the media resulted in different biofilm structure. By contrast with the control experiment, biofilm detachment ratios were all increased in three media with ClO 2 and BDMDAC addition. After ClO 2 addition, MITs were 30, 120 and 240 min and MIC was 1, 4 and 6 mg/L, respectively, at the low, medium and high substrate level. After BDMDAC addition, MITs in three media were all longer than those after ClO 2 addition, MIC was 200, 300 and 400 mg/L, respectively, at the low, medium and high substrate level.

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“…Under these conditions, the intactness of the steel had a significant effect, as well as the age of the biofilm, on the effectiveness of its removal. Based on the results of this study, it was recommended to perform the sanitation of the surfaces, on which biofilms are formed by this and similar strains, at intervals shorter than 12 h and to prevent mechanical damage to the steel surface (Lomander et al 2004).…”

Section: Effectiveness Of Biocides Against Biofilms In the Food Industrymentioning

confidence: 99%

Biofilms and hygiene on dairy farms and in the dairy industry: sanitation chemical products and their effectiveness on biofilms - a review

Vlkova¹,

Babák²,

Seydlova³

et al. 2008

Czech J. Food Sci.

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Vlková H., Babák V., Seydlová R., Pavlík I., Schlegelová J. (2008): Biofilms and hygiene on dairy farms and in the dairy industry: sanitation chemical products and their effectiveness on biofilms -a review. Czech J. Food Sci., 26: 309-323.Microbial biofilms which form on all types of surfaces of technological systems in the dairy industry and on dairy farms adversely affect the quality and safety of final products, i.e. both foodstuffs and raw materials used for their production. The fact that a number of microorganisms are alimentary pathogens, e.g. Staphylococcus aureus or Listeria monocytogenes, makes a serious problem directly affecting human health. Biofilms are usually formed by various species of microorganism, which protect each other against the effects of biocidal (antibacterial) agents and are resistant to these agents. The colonisation of surfaces of the open and closed piping systems, floors, waste, walls and ceilings of the production halls becomes a major problem in the selection of effective sanitation agents for their control. Based on the existing model studies, practical methods for testing the effectiveness of sanitation procedures should be evaluated, including the selection of biocides and comparison of the physical parameters of the sanitation procedures. Testing the effectiveness of the sanitation agents should be performed with the use of standardised tests, which consider microbial, structural, and chemical characteristics of the living microbial communities on specific contact surfaces in the food-processing industry.

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Evaluation of chlorines' impact on biofilms on scratched stainless steel surfaces

Cited by 52 publications

References 31 publications

Developing application and detection methods for Listeria monocytogenes and fish extract on open surfaces in order to optimize cleaning protocols

Developing application and detection methods for Listeria monocytogenes and fish extract on open surfaces in order to optimize cleaning protocols

Effect of oxidizing and non-oxidizing biocides on biofilm at different substrate levels in the model recirculating cooling water system

Biofilms and hygiene on dairy farms and in the dairy industry: sanitation chemical products and their effectiveness on biofilms - a review

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