Establishment and validation of heat inactivation modeling of Salmonella in commercial crispy meat
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1.College of Food Science and Engineering, Ocean University of China, Shandong Qingdao 266003, China;2.Laboratory of Pathogenic Microorganisms Inspection, Livestock and Poultry Products Quality & Safety Risk Assessment Laboratory(Qingdao)of MARA, China Animal Health and Epidemiology Center, Shandong Qingdao 266032, China

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R155

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    Abstract:

    Objective This study aimed to clarify the heat inactivation mechanics of Salmonella in commercial crispy meat and provide guidance for its safe consumption by studying the inactivation pattern of Salmonella in crispy meat at different heating temperatures.Methods The crispy meat inoculated with 108 CFU/g Salmonella typhimurium was heat treated at 80 ℃, 90 ℃, 100 ℃, 110 ℃, and 120 ℃ for a certain time. The thermal inactivation curves of Salmonella in crispy meat were fitted using a linear model, a Logistic model, and a Weibull model, and the optimal model was verified by external experiments.Results The results showed that compared with the linear model and the Logistic model, the Weibull model was more suitable to describe the thermal inactivation of Salmonella in crispy meat. The judgment coefficient R2 of the primary model was more than 0.992 1, and the R2 of the secondary model was 0.949 2 and 0.995 9, respectively. The accuracy Af and deviation Bf of the model verified at 95 ℃ and 105 ℃ were within the acceptable range, which indicated that the model constructed in this experiment can better describe the inactivation pattern of Salmonella in crispy meat in the temperature range of 80 ℃-120 ℃.Conclusion This study is expected to guide the safe heating of crispy meat to reduce microbial risk during consumption.

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CHENG Huimin, ZHAO Ge, XU Yuxian, WANG Lin, ZHANG Xiyue, XU Ying, WANG Junwei. Establishment and validation of heat inactivation modeling of Salmonella in commercial crispy meat[J].中国食品卫生杂志,2023,35(11):1551-1558.

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History
  • Received:July 14,2022
  • Revised:
  • Adopted:
  • Online: February 20,2024
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