Kinetic study on the changes in the susceptibility of egg white proteins to enzymatic hydrolysis induced by heat and high hydrostatic pressure pretreatment

Journal of Agricultural and Food Chemistry
Iesel Van der PlanckenM E Hendrickx

Abstract

A kinetic study was conducted on the effect of heat pretreatment in the temperature range of 50-85 degrees C at atmospheric pressure and of high hydrostatic pressure pretreatment (100-700 MPa) at four temperatures (10, 25, 40, and 60 degrees C) on the susceptibility of egg white solutions (10% v/v, pH 7.6) to subsequent enzymatic hydrolysis by a mixture of trypsin and alpha-chymotrypsin at 37 degrees C and pH 8.0. Both heat pretreatment at atmospheric pressure and high-pressure pretreatment resulted in an increase in degree of hydrolysis (DH) after 10 min of enzymatic reaction (DH10) of egg white solutions, as measured using the pH-stat method, which could be described by a fractional conversion model (based on an apparent first-order reaction kinetic model). The temperature dependence of the corresponding rate constants could be described by the Arrhenius equation. At elevated pressure, a negative apparent activation energy was obtained, implying an antagonistic effect of pressure and temperature. The pressure dependence of the rate constants could be described by the Eyring equation, and negative activation volumes were observed, which demonstrates the positive effect of pressure on the susceptibility of egg white solutions t...Continue Reading

References

Jan 1, 1993·Annual Review of Physical Chemistry·J L Silva, G Weber
Dec 20, 1999·Journal of Agricultural and Food Chemistry·S IamettiF Bonomi
Jun 12, 2003·Journal of Agricultural and Food Chemistry·Iesel Van der PlanckenMarc E Hendrickx
Jul 1, 1997·Meat Science·J C Cheftel, J Culioli

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Citations

Oct 31, 2012·The British Journal of Nutrition·Juliet A GerrardNigel G Larsen
May 8, 2009·American Journal of Physiology. Cell Physiology·Amritlal MandalMarcos A Terán
Jun 14, 2017·Critical Reviews in Food Science and Nutrition·Ya-Fei LiuPat Silcock
Jun 18, 2010·Biology of Reproduction·Csaba PribenszkyJohn Yovich
Jul 26, 2012·Annals of Neurology·Michael Y LinRanjan Gupta
Jul 1, 2019·Comprehensive Reviews in Food Science and Food Safety·Ya-Fei LiuPat Silcock
Mar 25, 2009·Journal of Agricultural and Food Chemistry·Wei ZhaoXiao Hua
Aug 7, 2021·Comprehensive Reviews in Food Science and Food Safety·Zuhaib F BhatHina F Bhat
Oct 1, 2021·Critical Reviews in Food Science and Nutrition·Vibeke OrlienJorge Ruiz Carrascal
Oct 8, 2021·Bioscience, Biotechnology, and Biochemistry·Kazunobu OkonMitsumasa Osada

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