Aleksander Zuchowski

Graduates // Aleksander Zuchowski


2010-2011 Master's thesis "Activity of selected enzymes of microbial origin in the biomass fermented to biogas"

Supervisor: Dr. Anna Krasowska


2009 Bachelor "The impact of environmental conditions on the production and activity of bacterial and fungal lipases"

Supervisor: Dr. Anna Krasowska


During the thesis bacterial strains were isolated from the methanogenic anaerobic digester fed with 0.2% of whey. Optimum growth temperatures and  proteolytic activity were determined for the isolated strains when growing on whey, milk and LB media. Subsequently, time courses  of enzymes production (proteases and lipases) were evaluated.   Mixed cultures of the strains with the highest activities were used to evaluate decrease lipid and protein content  when growing on whey.


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  • Biosurfactants

    We identified chemical structures of newly isolated biosurfactants which are secreted by Arctic microorganisms. We are investigating their antibacterial, antifungal properties as well as proapoptotic activity. Biosurfactants can be used as an antiseptics.

  • Biogas

    We are investigating and optimizing the efficiency of metanogenesis in bioreactors. We are also testing various substrates (industrial waste) as materials for biogas production. Microorganisms which participate in this process are investigated as e.g. biofilm producers.

  • Bacteriophages

    Bacteriophages or phages are bacterial viruses. We isolated and are now investigating phages which kill Bacillus strains. Beside the basic research, the collection of phages can be used in industry as for example eliminators of infections.

  • Antiseptics

    Fungal infections are difficult to treat because of the small number of effective drugs. Candida albicans resistance depends on the activity of ABC transporters (MDR, CDR). We have investigated strains and methods for finding new antifungal compounds (synthetic and natural) e.g. probiotic yeast Saccharomyces boulardii.