COMPARISON OF DEFINITIONS OF THE LAG PHASE AND THE EXPONENTIAL PHASE IN BACTERIAL-GROWTH
COMPARISON OF DEFINITIONS OF THE LAG PHASE AND THE EXPONENTIAL PHASE IN BACTERIAL-GROWTH
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DOI：
10.1111/j.1365-2672.1992.tb01815.x
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发表时间：
1992-02-01
期刊：
影响因子：
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通讯作者：
VANTRIET, K
中科院分区：
文献类型：
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作者：
ZWIETERING, MH;ROMBOUTS, FM;VANTRIET, K
滞后时间和指数期持续时间的不同定义可用于根据生长模型计算这些量。将传统定义与新提出的定义进行了比较。似乎可以从增长模型中得出滞后时间和指数期持续时间的值，并且可以量化不同定义之间的差异。所有不同的值都可以根据生长参数 mu(m)、lambda 和 alpha 计算出来。因此，似乎没有必要使用复杂的数学方程：简单的方程就足够了。对于 Gompertz 模型，滞后时间的传统定义与新提出的定义没有明显不同。对于两个定义来说，指数期的终点以及指数期的持续时间有很大不同。对于逻辑模型，这两个定义导致所有数量存在相当大的差异。建议使用常规定义来计算滞后时间。对于指数阶段的持续时间，建议使用新的定义。然而，该值可以直接根据传统的生长参数来计算。
Different definitions of the lag time and of the duration of the exponential phase can be used to calculate these quantities from growth models. The conventional definitions were compared with newly proposed definitions. It appeared to be possible to derive values for the lag time and the duration of the exponential phase from the growth models, and differences between the various definitions could be quantified. All the different values can be calculated from the growth parameters mu(m), lambda and alpha. Therefore, it appeared to be unnecessary to use complicated mathematical equations: simple equations were adequate. For the Gompertz model the conventional definition of the lag time did not differ appreciably from the newly proposed definition. The end-point of the exponential phase and thus the duration of the exponential phase differed considerably for the two definitions. For the logistic model the two definitions lead to considerable differences for all quantities. It is recommended that the conventional definition is used for calculating the lag time. For the duration of the exponential phase it is recommended that the new definition is used. The value can be calculated, however, directly from the conventional growth parameters.