摘要

估在指数生长期对压力（50-150MPa，10℃，5分钟）和温度（57℃，15分钟）的序贯处理对乳酸片球菌HA-6111-2细胞的存活和细菌素产生的影响。 生长曲线用改进的Gompertz模型拟合，并且估计的最大比生长速率被认为是压力依赖性的。 在更严重的压力条件下，细菌素生产的最大值的延迟被记录下来，但发现在温度处理之后压力更加显著。 在较低的压力强度处理下，不管施用顺序如何，与对照相比，每个细胞的细菌素产量增加，同时保持最大产量值。 治疗后细菌素的产生可用指数模型描述。

The effect of sequential treatments of pressure (50–150 MPa, 10 ºC, 5 min) and temperature (57 ºC, 15 min) on the survival and bacteriocin production of Pediococcus acidilactici HA-6111-2 cells in the exponential growth phase was assessed. The growth curves were fitted with the modified Gompertz model, and the estimated maximum specific growth rate was considered to be pressure dependent. A delay in the maximum value of bacteriocin production was registered for more severe pressure conditions, but it was found more notorious for pressure followed by temperature treatments. At lower pressure intensity treatment, regardless of the application order, there was an enhancement of bacteriocin production per cell when compared to the control while maintaining the maximum production value. Bacteriocin production after the treatments can be described by an exponential model.

https://akademiai.com/doi/abs/10.1556/066.2017.46.1.12