Species‐independent maintenance energy and natural population sizes
Species‐independent maintenance energy and natural population sizes
复制标题
与物种无关的维持能量和自然种群规模
DOI：
10.1111/j.1574-6941.1997.tb00389.x
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发表时间：
1997
影响因子：
4.2
通讯作者：
J. Harder
中科院分区：
文献类型：
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作者：
J. Harder
一个通用的策略来估计一个活跃的微生物群落的分解代谢率的基础上的大小。Tijhuis等人（Biotechnol. Bioeng. 42，1993，509-519），通过将维持底物消耗速率与分解代谢反应的标准自由能相乘，从恒化器实验中计算维持能量消耗速率。他们表明，维持能量通常可以用阿克里乌斯方程描述为与物种无关。在目前的通信中，它表明，该理论适用于不同的微生物培养系统。对于给定的环境条件，当所保存的自由能仅用于维持细胞时，获得最大微生物种群大小。单位体积的自由能守恒率与维持能的物种独立描述一起使得能够计算对应于微生物培养物的分解代谢率和维持底物消耗率的最大群体大小。
A general strategy to estimate the size of an active microbial community based on catabolic rates was developed. Tijhuis et al. (Biotechnol. Bioeng. 42, 1993, 509–519) calculated from chemostat experiments maintenance energy consumption rates by multiplication of the maintenance substrate consumption rate with the standard free energy of the catabolic reaction. They showed that the maintenance energy can generally be described as species-independent by an Arrhenius equation. In the present communication, it is shown that the theory is applicable for different microbial culture systems. For a given environmental situation, the maximal microbial population size is obtained when the free energy conserved is consumed solely for maintenance of the cell. The free energy conservation rate per volume together with the species-independent description of maintenance energy enables calculations of the maximal population size corresponding to a catabolic rate and of maintenance substrate consumption rates for microbial cultures.