Development of predictive mathematical model for the growth kinetics of Staphylococcus aureus by response surface model.

Development of predictive mathematical model for the growth kinetics of Staphylococcus aureus by response surface model. Research Abstract Details 

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Development of predictive mathematical model for the growth kinetics of Staphylococcus aureus by response surface model. Abstract Text:

Kyo-Young Seo,Sun-Kyung Heo,Chan Lee,Duck Hwa Chung,Min-Gon Kim,Kyu-Ho Lee,Keun-Sung Kim,Gyung-Jin Bahk,Dong-Ho Bae,Kwang-Yup Kim,Cheorl-Ho Kims,Sang-Do Ha,

A response surface model was developed for predicting the growth rates of Staphylococcus aureus in tryptic soy broth (TSB) medium as a function of combined effects of temperature, pH, and NaCl. The TSB containing six different concentrations of NaCl (0, 2, 4, 6, 8, and 10%) was adjusted to an initial of six different pH levels (pH 4, 5, 6, 7, 8, 9, and 10) and incubated at 10, 20, 30, and 40 degrees C. In all experimental variables, the primary growth curves were well (r2=0.9000 to 0.9975) fitted to a Gompertz equation to obtain growth rates. The secondary response surface model for natural logarithm transformations of growth rates as a function of combined effects of temperature, pH, and NaCl was obtained by SAS's general linear analysis. The predicted growth rates of the S. aureus were generally decreased by basic (pH 9-10) or acidic (pH 5-6) conditions and higher NaCl concentrations. The response surface model was identified as an appropriate secondary model for growth rates on the basis of correlation coefficient (r=0.9703), determination coefficient (r2=0.9415), mean square error (MSE=0.0185), bias factor (B(f)=1.0216), and accuracy factor (A(f)=1.2583). Therefore, the developed secondary model proved reliable for predictions of the combined effect of temperature, NaCl, and pH on growth rates for S. aureus in TSB medium.

Development of predictive mathematical model for the growth kinetics of Staphylococcus aureus by response surface model. Publishing Authors By Initials

KY Seo,SK Heo,C Lee,DH Chung,MG Kim,KH Lee,KS Kim,GJ Bahk,DH Bae,KY Kim,CH Kims,SD Ha,

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Development of predictive mathematical model for the growth kinetics of Staphylococcus aureus by response surface model. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of microbiology and biotechnology

VOLUME: 17

Page Numbers: 1437-44

Journal Abbreviation: J. Microbiol. Biotechnol.

ISSN: 1017-7825

DAY: 7

MONTH: Sep

YEAR: 2007

Development of predictive mathematical model for the growth kinetics of Staphylococcus aureus by response surface model. Information

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LANGUAGE: eng

NlmUniqueID: 9431852

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Grant and Affiliation Information for Development of predictive mathematical model for the growth kinetics of Staphylococcus aureus by response surface model.

AFFILIATION: Department of Food Science and Technology, Chung-Ang University, Ansung 456-756, Korea.

Country: Korea (South)

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MEDLINETA: J Microbiol Biotechnol

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