Modelling Bacterial Growth of Lactobacillus curvatus as a Function of Acidity and Temperature.

Applied and Environmental Microbiology
T WijtzesM H Zwietering

Abstract

Models that describe the effect of acidity, temperature, and the combined effect of these variables on the growth parameters of Lactobacillus curvatus are developed and validated. Growth parameters (lag time, specific growth rate, and maximum population density) were calculated from growth data at different temperature-acidity combinations. Experiments were set up to assess the quantitative effects of temperature and acidity on the growth parameters rather than for parameter estimation solely. The effect of acidity is monitored at several constant temperature values. Models are set up and fitted to the data. The same procedure is used at constant acidity values to model the effect of temperature. For lag time, specific growth rate, and maximum population density, the effect of temperature could be multiplied with the effect of acidity to obtain combinatory models that describe the effect of both controlling factors on the growth parameters. Lag time measurements showed large deviations, and therefore the lag time models developed can only be used to estimate the order of magnitude of lag time.

References

Jun 1, 1983·Journal of Bacteriology·D A RatkowskyR E Chandler
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Feb 1, 1994·International Journal of Food Microbiology·J P SutherlandT A Roberts
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Jan 1, 1994·Applied and Environmental Microbiology·M H ZwieteringK van 't Riet

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Citations

Jul 14, 2005·Applied Microbiology and Biotechnology·Daosheng Zhang, Robert W Lovitt
Dec 6, 2016·Microorganisms·Bettencourt de J C MunangaChristian Mestres
Oct 16, 2016·Applied Biochemistry and Biotechnology·Hao LuOtto D Simmons
May 12, 2009·Journal of Applied Microbiology·A RicciardiT Zotta
Feb 8, 2014·Applied Microbiology and Biotechnology·Virginia CarvalhaisNuno Cerca
Jun 29, 2002·Applied and Environmental Microbiology·Pradeep K MalakarK van 't Riet
Feb 12, 2009·Journal of Food Protection·Stavros G ManiosPanagiotis N Skandamis
Oct 3, 1999·Applied and Environmental Microbiology·J A WoutersT Abee
Aug 12, 1999·Fungal Genetics and Biology : FG & B·S Brul, F M Klis

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