KINETIC-PARAMETERS FOR INACTIVATION OF BACILLUS-STEAROTHERMOPHILUS AT HIGH-TEMPERATURES

被引:52
作者
DAVID, JRD [1 ]
MERSON, RL [1 ]
机构
[1] UNIV CALIF DAVIS, DEPT FOOD SCI & TECHNOL, DAVIS, CA 95616 USA
关键词
D O I
10.1111/j.1365-2621.1990.tb06793.x
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
High temperature thermal death parameters for Bacillus stearothermophilus TH24 (NCDO 1096) spores in water were determined using a computer‐controlled reactor. The equipment produced and recorded accurate, reproducible square‐wave temperature transients during very short heating times (−0.1 sec). Survivor curves and the phantom thermal death time (TDT) curve between 130°C and 155°C from reactor data were compared to results from oilbath‐heated capillary tubes between 115°C and 135°C. The TDT curve was nonlinear in the high temperature range but could be described by two lines with z = 9.3C° for temperatures between 115°C and 145°C and z = 16.9C° for temperatures above 145°C. An Arrhenius plot did not represent the data better. Copyright © 1990, Wiley Blackwell. All rights reserved
引用
收藏
页码:488 / +
页数:1
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