Consulta: subjectFacets:"Stainless steel surface"
Registros recuperados: 2
Data/hora: 01/06/2024 10:15:49

Action of peracetic acid on Escherichia coli and Staphylococcus aureus in suspension or settled on stainless steel surfaces
Provedor de dados: 58
Autores: Kunigk,Leo; Almeida,Maria C.B.
The efficiency of a commercial peracetic acid sanitizer on destruction of Staphylococcus aureus and Escherichia coli was evaluated using two distinct methods. The first method is the AOAC suspension test and the second is a method proposed by one of the authors in which the microbial cells are settled on a stainless steel surface and then treated with the sanitizer. The results showed that when in suspension S. aureus was more resistant to the sanitizer than E. coli. When S. aureus was settled on the stainless steel surface, the contact time between the sanitizer and the microorganisms to attain a 6.5 log reduction in the number of viable cells was three times greater than when the cells were in suspension.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peracetic acid; Staphylococcus aureus; Escherichia coli; Stainless steel surface; Sanitizers.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000100009

Biological activities of a mixture of biosurfactant from Bacillus subtilis and alkaline lipase from Fusarium oxysporum
Provedor de dados: 58
Autores: Quadros,Cedenir Pereira de; Duarte,Marta Cristina Teixeira; Pastore,Gláucia Maria.
In this study, we investigate the antimicrobial effects of a mixture of a biosurfactant from Bacillus subtilis and an alkaline lipase from Fusarium oxysporum (AL/BS mix) on several types of microorganisms, as well as their abilities to remove Listeria innocua ATCC 33093 biofilm from stainless steel coupons. The AL/BS mix had a surface tension of around 30 mN.m-1, indicating that the presence of alkaline lipase did not interfere in the surface activity properties of the tensoactive component. The antimicrobial activity of the AL/BS mix was determined by minimum inhibitory concentration (MIC) micro-assays. Among all the tested organisms, the presence of the mixture only affected the growth of B. subtilis CCT 2576, B. cereus ATCC 10876 and L. innocua. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial activity; Listeria innocua; Microbial biofilm; Minimum inhibitory concentration; Stainless steel surface.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100045