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| Study on Inactivation/Survival Model and Control Measures of Y.Enterocolitica in Pork |
| Zhou Yan-ming;Wang Qi;Yu Wei-jun |
| The analyzes and testing center,Shenyang agricultural university,Shenyang |
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Abstract To establish inactivation/survival prediction model of Yersinia enterocolitica in pork and present some measures to control the Yersinia enterocolitica.Methods:Inventory of bacteria by the concentration gradient dilution was counted. The survival and inactivation curve of Yersinia enterocolitica by logarithm was drawn. The basic method and procedure of predictive microbiology was applied. And CurveExpert1.38 software as a complementary tool was used to fit to the experimental date.Result:At 50℃,-18℃ and during the deepfreeze,the inactivation and survival prediction mode about relation of No/Nt to time conform to linear (No:the initial total bacteria;Nt:the total bacteria at t),the equations were Log(No/Nt)=1.0477287+ 0.1705726T,Log(No/Nt)=0.091057233+0.036013901T,LogNt=-0.0651058+ 0.97683871LogNo.Conclusion:Yersinia enterocolitica is very sensitive to high temperature,but it can still survive during refrigeration and deepfreeze.
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2008, Vol. 22 
