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| Development of Growth Kinetics Model of Pseudomonas in Chilled Meat |
| DAI Yi-jie;LI Zong-jun;WANG Yuan-liang |
| Key Laboratory of Food Science and Biotechnology of Hunan Province, College of Food Science and Technology,
Hunan Agricultural University, Changsha 410128, China |
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Abstract A dynamic growth model of Pseudomonas C272 isolated from chilled meat was developed. The growth of
Pseudomonas C272 at 0, 4, 8, 12 ℃ and 25 ℃ was simulated using the Matlab program. Results showed that the Gompertz equation
could describe the dynamic growth of Pseudomonas C272 at different temperatures, and the Belehradek model could describe the
effect of temperature on its U (maximum specific growth rate), and the Quadratic polynomial could describe the effect of
temperature on LPD (lag phase) and MPD (maximum cell density). The developed model was verified using chilled meat
samples tray-packaged at 4 ℃ and 7 ℃ respectively. It was found that that the secondary model can predict growth of Pseudomonas
C272 in chilled meat at 4－25 ℃ effectively.
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2011, Vol. 25 
