Modeling inhibition effects of Lactobacillus plantarum subsp plantarum CICC 6257 on growth of Listeria monocytogenes in ground pork stored at CO2-rich atmospheres

作者：Zhang, Wenmin; Wang, Xiang; Xu, Chaoqun; Chen, Yuanmei; Sun, Wanxia; Liu, Qing; Dong, Qingli^*

来源：LEBENSMITTEL-WISSENSCHAFT UND-TECHNOLOGIE-FOOD SCIENCE AND TECHNOLOGY, 2018, 97: 811-817.

DOI：10.1016/j.lwt.2018.07.050

• Protective culture
• Modified atmosphere
• Combined treatment
• Listeria monocytogenes
• Modified logistic model

This paper aimed to explore and model the combined effects of CO2 atmospheres and Lactobacillus plantarum subsp. plantarum CICC 6257 on growth of Listeria monocytogenes in meat at 25 degrees C. Before applying the combined treatments, the effects of CO2 and L. plantarum CICC 6257 alone on L. monocytogenes were separately evaluated in broth. It indicated that the maximum population density (N-max) of L. monocytogenes could reach 8.52 log CFU/mL within 3 days at 25 degrees C, even at 100% CO2 concentration; and L. plantarum CICC 6257 alone had no significant (p >= 0.05) effect on the lag-phase (lambda) of L. monocytogenes. While the combination could, not only prolong the lambda, but also reduce the maximum specific growth rate (mu(max)) and N-max of L. monocytogenes in meat. Moreover, the inhibition ability of the combination on L. monocytogenes increased with increasing of CO2 concentrations. The L. plantar CICC 6257 combined with 60% CO2 was selected as the optimal treatment and the combination had no negative effect on the quality of meat. Finally, the inhibition effects of the combination on L. monocytogenes were well modeled by the modified Logistic model. The study provided a potential approach for bio-protecting meat from L. monocytogenes growth.

• 出版日期2018-11
• 单位上海理工大学; 江苏大学