Baranyi J, Roberts T A
Institute of Food Research, Reading Laboratory, UK.
Int J Food Microbiol. 1994 Nov;23(3-4):277-94. doi: 10.1016/0168-1605(94)90157-0.
A new member of the family of growth models described by Baranyi et al. (1993a) is introduced in which the physiological state of the cells is represented by a single variable. The duration of lag is determined by the value of that variable at inoculation and by the post-inoculation environment. When the subculturing procedure is standardized, as occurs in laboratory experiments leading to models, the physiological state of the inoculum is relatively constant and independent of subsequent growth conditions. It is shown that, with cells with the same pre-inoculation history, the product of the lag parameter and the maximum specific growth rate is a simple transformation of the initial physiological state. An important consequence is that it is sufficient to estimate this constant product and to determine how the environmental factors define the specific growth rate without modelling the environment dependence of the lag separately. Assuming that the specific growth rate follows the environmental changes instantaneously, the new model can also describe the bacterial growth in an environment where the factors, such as temperature, pH and aw, change with time.
巴拉尼等人（1993年a）所描述的生长模型家族中引入了一个新成员，其中细胞的生理状态由一个单一变量表示。延迟期的持续时间由接种时该变量的值以及接种后的环境决定。当继代培养程序标准化时，如在产生模型的实验室实验中那样，接种物的生理状态相对恒定，且与后续生长条件无关。结果表明，对于具有相同接种前历史的细胞，延迟参数与最大比生长速率的乘积是初始生理状态的一个简单变换。一个重要的结果是，估计这个恒定乘积并确定环境因素如何定义比生长速率就足够了，而无需分别对比生长速率的环境依赖性进行建模。假设比生长速率能即时跟随环境变化，新模型还可以描述温度、pH值和水分活度等因素随时间变化的环境中的细菌生长情况。
