Chemical sanitizers to control biofilms formed by two Pseudomonas species on stainless steel surface

Food Science and Technology (Campinas)

Danila Soares Caixeta²  Thiago Henrique Scarpa¹  Danilo Florisvaldo Brugnera²  Dieyckson Osvani Freire²  Eduardo Alves²  Luiz Ronaldo De Abreu²  Roberta Hilsdorf Piccoli² 

[1] ,Universidade Federal de Lavras Departamento de Ciência dos Alimentos Lavras MG ,Brazil

关键词: biofilm;    P. aeruginosa;    P. fluorescens;    chemical sanitizers;    biofilme;    P. aeruginosa;    P. fluorescens;    sanificantes químicos;   

DOI  :  10.1590/S0101-20612012005000008

来源: SciELO

【 摘 要 】

The biofilm formation of Pseudomonas aeruginosa and Pseudomonas fluorescens on AISI 304 stainless steel in the presence of reconstituted skim milk under different temperatures was conducted, and the potential of three chemical sanitizers in removing the mono-species biofilms formed was compared. Pseudomonas aeruginosa cultivated in skim milk at 28 °C presented better growth rate (10.4 log CFU.mL-1) when compared with 3.7 and 4.2 log CFU.mL-1 for P. aeruginosa and P. fluorescens cultivated at 7 °C, respectively. Pseudomonas aeruginosa formed biofilm when cultivated at 28 °C. However, only the adhesion of P. aeruginosa and P. fluorescens was observed when incubated at 7 °C. The sodium dichloroisocyanurate was the most efficient sanitizer in the reduction of the adhered P. aeruginosa cells at 7 and 28 °C and those on the biofilm, respectively. The hydrogen peroxide was more effective in the reduction of adhered cells of P. fluorescens at 7 °C.

【 授权许可】

CC BY   
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