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Chinese Agricultural Science Bulletin ›› 2013, Vol. 29 ›› Issue (12): 217-220.doi: 10.11924/j.issn.1000-6850.2012-3632

• 23 • Previous Articles    

Establishment and Validation of Growth Predictive Model of Pseudomonas from Chilled Marbled Meat

  

  • Received:2012-11-07 Revised:2012-11-30 Online:2013-04-25 Published:2013-04-25

Abstract: In order to establish the predictive models, the plate count of Pseudomonas with selective medium (CFC agar) was developed. The predictive growth primary model of Pseudomonas was got through fitting the growth kinetics curve of chilled marbled meat under 0~20℃. The Square-root model and Arrhenius model were describe d the relationship between temperature and maximum specific growth rate, lag phase, and built the predictive secondary model of Pseudomonas. The results showed that, the regression coefficient (R2>0.99), accurate factor (Af) and bias factor (Bf) were close to 1.0, the lag phase (LPD) and maximum specific growth rate (U) ranged from 1.6996 to 0.1212 and from 0.5782 to 3.3751, respectively. Moreover, the regression coefficient (R2) of the maximum specific growth rate and lag phase in Square-root model was higher than Arrhenius model, the growth kinetics model provided a useful and accurate method of predicting the growth changes of Pseudomonas from 0℃ to 20℃.