Abstract
All deviations from optimum cultivation temperature affect strongly the physiology and morphology of cells ofCandida boidinii strain 2 during growth in methanol-limited chemostat. The optimum cultivation temperature was 28–30 °C at which maximum cell concentration and maximum cell yield (Y S 0.4 g/g) were achieved. At suboptimal growth temperatures the cells were rich in cell protein, RNA, alcohol oxidase (AO) and in peroxisomes. Formation of cubic peroxisomes and a 20 % decrease of budding cells in the population was observed. At supraoptimal growth temperatures (>30 °C) a sharp decrease in AO activity was accompanied by degradation of peroxisomes in the cells. The culture forms pseudomycelium: at 34 °C the cells stop growing and they are washed out of the bioreactor.
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