COMPARISON OF RESPONSE-SURFACE MODELS FOR LISTERIA-MONOCYTOGENES STRAINS UNDER AEROBIC CONDITIONS

被引:19
作者
HUDSON, JA
机构
[1] Meat Industry Research Institute of New Zealand (Inc.), Hamilton
关键词
LISTERIA MONOCYTOGENES; KINETIC MODELING;
D O I
10.1016/0963-9969(94)90177-5
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
A factorial experimental design was employed to measure the effects of temperature (4-41 degrees C), pH (5.5-7.7), NaCl concentration (0.5-5.5%) and NaNO2 concentration (0-125 ppm) on the growth kinetics of two food-derived strains of Listeria monocytogenes in buffered tryptose phosphate broth. Response surface models for both strains were produced from these data. Comparisons between these models, a published model for strain Scott A and measured kinetic data showed that the model for strain Scott A was generally better at predicting lag times while the model for one of the food-derived isolates was better at predicting generation times. A combination of these models was found to provide reasonable predictions of growth on fleshfood substrates when compared to the measured kinetic data
引用
收藏
页码:53 / 59
页数:7
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