Sörqvist S
Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Acta Vet Scand. 2003;44(1-2):1-19. doi: 10.1186/1751-0147-44-1.
The aim of the work was to collect, evaluate, summarize and compare heat resistance data reported for Campylobacter, Enterococcus, Escherichia, Listeria, Salmonella and Yersinia spp. The work was limited to resistance in liquids with pH values 6-8. Results obtained under similar experimental conditions were sought. Thermal destruction lines for the various bacterial groups studied were constructed using log10 D values and treatment temperatures. There was a good linear relationship between log10 D and temperature with Escherichia coli, listerias and salmonellas. For campylobacters, enterococci and yersinias the relationships were weaker but, nevertheless, present. Using the slopes of the lines and their 95% confidence limits, z values and their 95% confidence limits were calculated. z values were compared with z values obtained from reports. The equations for the lines were also used for calculation of predicted means of D values at various treatment temperatures. 95% confidence limits on predicted means of D values and on predicted individual D values were also calculated. Lines and values are shown in figures and tables. Differences in heat resistance noted between and within the bacterial groups studied are discussed.
这项工作的目的是收集、评估、总结和比较弯曲杆菌属、肠球菌属、大肠杆菌属、李斯特菌属、沙门氏菌属和耶尔森菌属所报告的耐热性数据。该工作仅限于pH值为6 - 8的液体中的抗性。寻找在相似实验条件下获得的结果。使用log10 D值和处理温度构建了所研究的各种细菌群体的热破坏曲线。对于大肠杆菌、李斯特菌和沙门氏菌，log10 D与温度之间存在良好的线性关系。对于弯曲杆菌、肠球菌和耶尔森菌，这种关系较弱，但仍然存在。利用曲线的斜率及其95%置信限，计算了z值及其95%置信限。将z值与从报告中获得的z值进行比较。这些曲线的方程还用于计算不同处理温度下D值的预测均值。还计算了D值预测均值和预测单个D值的95%置信限。曲线和数值在图和表中展示。讨论了所研究的细菌群体之间以及群体内部耐热性的差异。
