Microbial Growth Estimation in Liquid Media Exposed to Temperature Fluctuations
- 1 May 1993
- journal article
- Published by Wiley in Journal of Food Science
- Vol. 58 (3) , 644-648
- https://doi.org/10.1111/j.1365-2621.1993.tb04347.x
Abstract
Comparisons of linear, square root and Arrhenius specific growth rate‐temperature models showed no clear overall preference. At low aw and refrigeration temperature, the linear model was satisfactory for Brochothrix thermosphacta and Pseudomonas fluorescens. A linear relationship between (specific growth rate)−1 and lag phase was observed for these two psychrotrophs. The R2 for B. thermosphacta in 3% (aw= 0.968), 6% (aw= 0.950), and 9% NaCl (aw= 0.943) media was 0.865, 0.946 and 0.994, respectively. In 8% (aw= 0.973) and 20% (aw= 0.948) glycerol media, the R2 was 0.998 and 0.999, respectively. R2 for P. fluorescens growth in NaCl (3 or 4%) or glycerol (10 or 20%) media was >0.99. A cumulative growth adaptation function successfully estimated microbial growth at fluctuating temperatures.Keywords
This publication has 24 references indexed in Scilit:
- Non-linear regression of biological temperature-dependent rate models based on absolute reaction-rate theoryPublished by Elsevier ,2004
- EFFECTS of TEMPERATURE and SOLUTE ON the MINIMUM WATER ACTIVITY FOR GROWTH and TEMPERATURE CHARACTERISTIC of SELECTED MESOPHILES and PSYCHROTROPHSJournal of Food Processing and Preservation, 1993
- Numerical and Statistical Methodology to Analyze Microbial Spoilage of Refrigerated Solid Foods Exposed to Temperature AbuseJournal of Food Science, 1993
- Predictive MicrobiologyPublished by American Chemical Society (ACS) ,1992
- Applicability of the Davey (linear Arrhenius) predictive model to the lag phase of microbial growthJournal of Applied Bacteriology, 1991
- THE EFFECT of INTERNAL THERMAL GRADIENTS ON the RELIABILITY of SURFACE MOUNTED FULL-HISTORY TIME-TEMPERATURE INDICATORSJournal of Food Processing and Preservation, 1990
- Model for combined effect of temperature and salt concentration/water activity on the growth rate of Staphylococcus xylosusJournal of Applied Bacteriology, 1987
- Prospective use of temperature function integration for predicting the shelf-life of non-frozen poultry-meat productsFood Microbiology, 1984
- Hazard analysis applied to microbial growth in foods: Development of mathematical models describing the effect of water activityJournal of Applied Bacteriology, 1983
- Chemical and Microbial Activity Rates Under Square‐Wave and Sinusoidal Temperature FluctuationsJournal of Food Science, 1965