Increasing preservation efficiency and product quality through control of temperature distributions in high pressure applications

被引：11

作者：

De Heij, W

Van Schepdael, L

Van den Berg, R

Bartels, P

机构：

[1] Agrotechnol Res Inst ATO, NL-6700 AA Wageningen, Netherlands

[2] Solico BV, Oosterhout, Netherlands

来源：

HIGH PRESSURE RESEARCH | 2002年 / 22卷 / 3-4期

关键词：

high pressure; sterilisation; adiabatic temperature rise; homogeneous temperature; kinetic model; FEM modelling;

D O I：

10.1080/08957950212408

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effectiveness of HP sterilisation is a function of both temperature and pressure. As during pressurisation the product temperature increases, heat transfer to the colder HPP vessel wall occurs and the product fraction near the vessel wall will be colder than the product in the middle of the vessel. The effect of the temperature distribution in the vessel on the inactivation of Bacillus stearothermophilus has been examined. A mathematical model has been built, in which both thermodynamics and inactivation kinetics are integrated. Heat transfer is based on a Finite Element simulation, inactivation kinetics are based on first order kinetics. Based on this model and experiments the effect of an homogeneous temperature distribution on inactivation is demonstrated.

引用

页码：653 / 657

页数：5