Establishment and validation of predictive model of lactic acid bacteria from marinating duck head

In order to fast predict and monitor the growth of microorganism in marinating duck product, growth predictive model of lactic acid bacteria (LAB) from marinating duck head under 5 ～ 25℃ temperature conditions was established and validated in this paper. The results showed that Gompertz equation could well describe the growth of LAB under different temperatures, and both the deviation factor and accurate factor was about 1. Moreover, the square root model was used for describing the temperature and maximum specific growth rate and demurrage relations, so as to get LAB secondary model. The overall models proved to be significant, and the preliminary research showed that growth predictive model could effectively predict 5 ～ 25℃ the growth of LAB.