title: Assessment of hydrophobicity and roughness of stainless steel adhered by an isolate of Bacillus cereus from a dairy plant.
abstract: The interaction between the surface of stainless steel and Bacillus cereus was studied in terms of the characteristics of interfacial interaction determined from the measurement of the contact angle of the surface of B. cereus and stainless steel in the presence or absence of B. cereus adherence. The microtopographies and the roughness of the surface of stainless steel and stainless steel adhered by B. cereus were evaluated with the help of atomic force microscopy and perfilometry. The strain of B. cereus studied was considered hydrophilic, whereas the stainless steel was considered hydrophobic. The adhesion was not thermodynamically favorable (ΔGadhesion > 0) between the stainless steel and the strain of B. cereus studied. Thus, the interaction between them was not favored by the thermodynamic aspect of adhesion. There was no difference (p > 0.05) in the roughness of the surfaces of stainless steel adhered by B. cereus when analyzed by atomic force microscope and perfilometry.
authors.affiliation: Departamento de Tecnologia de Alimentos, Universidade Federal de Viçosa , Viçosa, MG , Brasil.
authors.forename: Patrícia Campos
authors.initials: PC
authors.lastname: Bernardes
authors.forename: Nélio José
authors.initials: NJ
authors.lastname: de Andrade
authors.forename: Sukarno Olavo
authors.initials: SO
authors.lastname: Ferreira
authors.forename: João Paulo Natalino
authors.initials: JP
authors.lastname: de Sá
authors.forename: Emiliane Andrade
authors.initials: EA
authors.lastname: Araújo
authors.forename: Deyse Maria Zanom
authors.initials: DM
authors.lastname: Delatorre
authors.forename: Lívia Maria Pinheiro
authors.initials: LM
authors.lastname: Luiz
keywords: Bacillus cereus; adhesion; dairy plant; hydrophobicity; roughness
references.citation: J Appl Microbiol. 2001 Jun;90(6):892-900
references.pmid: 11412319
references.citation: Food Microbiol. 2008 Jun;25(4):588-96
references.pmid: 18456114
references.citation: J Dairy Sci. 2001 Jan;84(1):1-11
references.pmid: 11210019
references.citation: Res Microbiol. 2003 Jun;154(5):329-35
references.pmid: 12837508
references.citation: Int J Food Microbiol. 2002 Jul 25;77(1-2):11-8
references.pmid: 12076028
references.citation: Appl Environ Microbiol. 1984 Nov;48(5):980-3
references.pmid: 6508312
references.citation: FEMS Microbiol Rev. 1999 Apr;23(2):179-230
references.pmid: 10234844
references.citation: Food Microbiol. 2007 Feb;24(1):1-6
references.pmid: 16943088
references.citation: Int J Food Microbiol. 1997 Feb;34(2):179-86
references.pmid: 9039564