Reference : Surface-active properties of surfactin iturin A mixtures produced by Bacillus subtilis
Scientific journals : Article
Life sciences : Agriculture & agronomy
http://hdl.handle.net/2268/36346
Surface-active properties of surfactin iturin A mixtures produced by Bacillus subtilis
English
Razafindralambo, Hary mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Popineau, Yves [> > > >]
Deleu, Magali mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Hbid, Choukri [> > > >]
Jacques, Philippe [> > > >]
Thonart, Philippe mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech - Biochimie et microbiologie industrielles >]
Paquot, Michel mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
1997
Langmuir
American Chemical Society
13
23
6026-6031
Yes (verified by ORBi)
International
0743-7463
1520-5827
Washington
DC
[en] Surface-active propertiesdynamic adsorption, monolayer stability, micelle, foaming, synergism, interaction
[en] Surface-active properties including dynamic adsorption, monolayer stability, micelle forming capacity, and foaming aptitudes of surfactin-C-15/iturin A-C-15 mixtures were studied. Surfactin-C-15 and iturin A-C-15 molecules interact in synergism on the most surface-active properties evaluated at 20 degrees C at the air-water interface and in aqueous solution (pH 8.0). The synergism is positive on the adsorption effect, monolayer stability, foam density, and liquid stability in foam, whereas it is negative on the adsorption rate. No synergism occurs an micelle forming capacity, but surfactin-C-15 and iturin A-C-15 form mixed micelles when the solution contains a low proportion of surfactin-C-15.ses the synergistic effect is maximum when surfactin-C-15 and iturin A-C-15 molecules are mixed in a 2:3 ratio. This is attributed to the surfactin/iturin A complex formation resulting from specific interactions among two surfactin-C-15 molecules and three iturin A-C-15 molecules. A model of such a complex formation is proposed.
Union Européenne = European Union - UE = EU; Belgian Programme of Interuniversity Poles of attraction
BIO4-CT950176
Researchers ; Professionals ; Students ; General public ; Others
http://hdl.handle.net/2268/36346
also: http://hdl.handle.net/2268/74224 ; http://hdl.handle.net/2268/35622
10.1021/la970533u

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