Article (Scientific journals)
Electrical conductivity of whey protein deposit: Xanthan gum effect on temperature dependency
Ayadi, Mohamed; Leuliet, J.C.; Chopard, F. et al.
2004In Food and Bioproducts Processing, 82 (4 C), p. 320 - 325
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Keywords :
Electrical conductivity; Fouling; Ohmic heating technology; β-lactoglobulin-xanthan gum interaction; Lactoglobulin
Abstract :
[en] Protein-polysaccharide mixtures are widely used in the food industry as they play an essential role in the structure, texture and stability of many foodstuffs. The electrical conductivity is a key parameter in ohmic heating technology. The temperature dependence of the electrical conductivity of two fouling model fluids was studied at neutral pH, between 10°C and 100°C. The differences observed in the thermograms were attributed to the interaction between protein and xanthan gum molecules. The electrical conductivity of the deposit generated by ohmic heating of these model fluids was measured between 10°C and 120°C. The marked differences between the conductivity of each deposit and the fluids could be related to observable differences in microstructure. © 2004 Institution of Chemical Engineers.
Disciplines :
Food science
Author, co-author :
Ayadi, Mohamed ;  Université de Liège - ULiège > Département GxABT > Chemistry for Sustainable Food and Environmental Systems (CSFES) ; INRA, LGPTA, 59650 Villeneuve d'Ascq Cedex, France
Leuliet, J.C.;  INRA, LGPTA, 59650 Villeneuve d'Ascq Cedex, France
Chopard, F.;  Alfa Laval Vicarb, Fontanil Cornillon, France
Berthou, M.;  EDF-R and D, Moret sur Loing, France
Lebouché, M.;  LEMTA, Vandoeuvre-lès-Nancy, France
Language :
English
Title :
Electrical conductivity of whey protein deposit: Xanthan gum effect on temperature dependency
Publication date :
2004
Journal title :
Food and Bioproducts Processing
ISSN :
0960-3085
eISSN :
1744-3571
Publisher :
Institution of Chemical Engineers
Volume :
82
Issue :
4 C
Pages :
320 - 325
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
The authors gratefully acknowledge the financial support from Alfa Laval Vicarb and Electricité de France. The authors would like to express their thanks to Gilles Delattre and Jean Pierre Tissier for their contribution to the HPLC and SEM measurements.
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