Summary
A defined mixed culture of the yeast Cryptococcus elinovii H1 and the bacterium Pseudomonas putida P8 was immobilized by adsorption on activated carbon and sintered glass, respectively. Depending on its adsorption capacity for phenol the activated carbon system could completely degrade 17 g/l in batch culture, whereas the sintered glass system was able to degrade phenol up to 4 g/l. During semicontinuous degradation of phenol (1 g/l) both systems reached constant degradation times with the fourth batch that lasted 8 h when using the activated carbon system and 10 h in the sintered glass system. In the course of continuous degradation of phenol the activated carbon system reached a maximum degradation rate of 9.2 g l−1 day−1 compared to 6.4 g l−1 day−1degraded by the sintered glass system. 2-Hydroxymuconic acid semialdehyde could be identified and quantitatively determined as a metabolite of phenol degradation by P. putida P8. Increased membrane permeability under the influence of phenol was demonstrated by the examination of K+ efflux from P. putida P8.
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Mörsen, A., Rehm, HJ. Degradation of phenol by a defined mixed culture immobilized by adsorption on activated carbon and sintered glass. Appl Microbiol Biotechnol 33, 206–212 (1990). https://doi.org/10.1007/BF00176526
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DOI: https://doi.org/10.1007/BF00176526