多段連続培養における適応過程の解析 : (第2報) Chlorella pyrenoidosaの温度変化に対する適応

概要

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The adaptation process of microorganisms to a different circumstance caused by transferring them from one vessel to another is one of the important problems in the multistage continuous culture. In our previous report, the effects of cell age distribution and the cell history on the adaptation phenomena were studied using a synchronus culture of Chlorella. In other words, how the cell age in a flowing medium from one vessel into another and the residence time in the second vessel influence the growth of population was studied. In the adaptation process of microorganisms transferred from an inorganic medium to an organic one, the following mass balance equation regarding the cell number was established : (dN_2)/(dt)=D_2(F_1/(F_1+F<in>)N_1-N_2)+ν_<2∞>G(θ, Θ)N_2 In the present study, experiments were carried out on the adaptation system of microorganisms transferred from one vassel to another with a difference in temperature but without any difference in composition between the two media. The equation described above was also found to be true in these experiments. This theory will be useful when a decrease in the specific growth rate ν may occur due to environmental changes caused by transferring microorganisms to one vessel to another in the multistage continuous culture.
社団法人日本生物工学会の論文
1970-02-25