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Abstract:

The structure modification of egg white proteins and β-lactoglobulin concentrate when subjected to long length pulses of high intensity electric fields (12.5 kV/cm) was evaluated and related to their sol-gel transition behavior. Both proteins were partially denatured (26-40%) when applying up to 10 pulses in the order of milliseconds. However, whilst the onset and peak, denaturation temperatures of the β-lactoglobulin concentrate were reduced by approximately 4-5°C, the thermostability of egg white proteins was partially increased. Electrophoresis analysis revealed the formation of aggregates involving covalent bonds. The gelation rate of β-lactoglobulin concentrate was increased after the electric-treatment. In contrast, the gelation rate of egg white at 63°C was lowered. © 2003 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Pulsed electric fields effects on the molecular structure and gelation of β-lactoglobulin concentrate and egg white
Autor:Perez, O.E.; Pilosof, A.M.R.
Filiación:Departamento de Industrias, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, (1428) Buenos Aires, Argentina
Agencia Nac. Promocion Cie. T., Argentina
Consejo Nac. de Invest. Cie. y Tec., Argentina
Palabras clave:Differential scanning calorimetry; Egg white; Gelation; Pulsed electric fields; β-Lactoglobulin; Agglomeration; Chemical bonds; Conformations; Electric field effects; Electrophoresis; Gelation; Molecular structure; Proteins; Reaction kinetics; Sol-gels; Thermodynamic stability; Egg white; Food products
Año:2004
Volumen:37
Número:1
Página de inicio:102
Página de fin:110
DOI: http://dx.doi.org/10.1016/j.foodres.2003.09.008
Título revista:Food Research International
Título revista abreviado:Food Res. Int.
ISSN:09639969
CODEN:FORIE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09639969_v37_n1_p102_Perez

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Citas:

---------- APA ----------
Perez, O.E. & Pilosof, A.M.R. (2004) . Pulsed electric fields effects on the molecular structure and gelation of β-lactoglobulin concentrate and egg white. Food Research International, 37(1), 102-110.
http://dx.doi.org/10.1016/j.foodres.2003.09.008
---------- CHICAGO ----------
Perez, O.E., Pilosof, A.M.R. "Pulsed electric fields effects on the molecular structure and gelation of β-lactoglobulin concentrate and egg white" . Food Research International 37, no. 1 (2004) : 102-110.
http://dx.doi.org/10.1016/j.foodres.2003.09.008
---------- MLA ----------
Perez, O.E., Pilosof, A.M.R. "Pulsed electric fields effects on the molecular structure and gelation of β-lactoglobulin concentrate and egg white" . Food Research International, vol. 37, no. 1, 2004, pp. 102-110.
http://dx.doi.org/10.1016/j.foodres.2003.09.008
---------- VANCOUVER ----------
Perez, O.E., Pilosof, A.M.R. Pulsed electric fields effects on the molecular structure and gelation of β-lactoglobulin concentrate and egg white. Food Res. Int. 2004;37(1):102-110.
http://dx.doi.org/10.1016/j.foodres.2003.09.008