Effect of heat assisted high pressure treatment on rate of change in pH and gel strength of acidified milk gel in the preparation of soft cheese

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Abstract

The effect of high pressure (200-600 MPa), pressurization time (0-60 min) and heat treatment temperature (15-65oC) on change in pH and storage modulus (G') of the acidified milk gel in the preparation of soft cheese was studied. The value of the pH of the heat assisted high pressure (HAHP) treated samples was observed to vary from 5.48 to 5.31 after 140 s of acidification, whereas it dropped from 6.38 to 5.16 after 240 s of acidification for the control. It was observed that higher pressure and temperature increased the pH values of the milk gel, whereas the values decreased with higher pressurization time. Similarly, the values of G' of the HAHP treated samples ranged between 384 Pa and 322 Pa after 200 s, compared to 361 Pa after 260 s for the control. High pressure increased the G' value of the HAHP samples, whereas the value decreased with high pressurization time and temperature.

Original languageEnglish (US)
Pages (from-to)2459-2464
Number of pages6
JournalInternational Food Research Journal
Volume23
Issue number6
StatePublished - 2016

Bibliographical note

Publisher Copyright:
© All Rights Reserved.

Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.

Keywords

  • Coagulation characteristics
  • Heat-acid coagulation Soft cheese
  • High pressure processing

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