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Titolo:
AN ELECTROCHEMICAL METHOD FOR ASSESSING BIODEPOSITION ON STAINLESS-STEEL
Autore:
BOULANGEPETERMANN L; BELLONFONTAINE MN; BAROUX B;
Indirizzi:
UGINE SA,RES CTR,2 AVE PAUL GIROD F-73403 UGINE FRANCE INRA,GENIE HYG & PROCEDES ALIMENTAIRES LAB F-91300 MASSY FRANCE LAB THERMODYNAM & PHYS CHIM MET,CNRS,UA 29 F-38402 ST MARTIN DHERES FRANCE
Titolo Testata:
Journal of microbiological methods
fascicolo: 1, volume: 21, anno: 1995,
pagine: 83 - 96
SICI:
0167-7012(1995)21:1<83:AEMFAB>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
BACTERIAL ATTACHMENT; CONTACT SURFACES; MICROSCOPY; ADHESION; GROWTH; MILK; MICROORGANISMS; ADSORPTION; CORROSION; HYGIENE;
Keywords:
BACTERIAL ADHESION; BACTERIAL DEPOSITION; DEXTRAN; ELECTROCHEMICAL TECHNIQUES; LEUCONOSTOC MESENTEROIDES; STAINLESS STEEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
L. Boulangepetermann et al., "AN ELECTROCHEMICAL METHOD FOR ASSESSING BIODEPOSITION ON STAINLESS-STEEL", Journal of microbiological methods, 21(1), 1995, pp. 83-96

Abstract

The interactions between stainless steel surfaces and some biologicalmaterials are investigated using electrochemical techniques. Two lactic bacteria were studied: Leuconostoc mesenteroides, which is encapsulated and biosurfactant (dextran) producing and Streptococcus thermophilus, which is not encapsulated. Adding bacteria (or simply dextran) ina NaCl-containing electrolyte in contact with stainless steel, provokes some significant variations in the electrode potential. Conversely,in potentiostatic conditions, some anodic current variations are recorded. This electrochemical response is very sensitive to the considered biological material, the bacterial concentration and the electrochemical parameters as well. A decrease in the electrode potential lowers both the values of current variations and the number of deposited bacteria. Due to the presence of the capsular biopolymer (dextran), the adhesion of Leuconostoc mesenteroides, is expected to be independent of the solid surface properties when no polarization is applied. The present results suggest that the surface polarization acts as an inhibitorof the dextran adsorption. Finally, electrochemical techniques appearto be a powerful tool for investigating the interaction between bacteria and metallic surfaces.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 15:01:27