Morphological observation and microbial population dynamics in anaerobic polyurethane foam biofilm degrading gelatin

G. Tommaso, M.B. Varesche, M. Zaiat, R.F. Vazoller, E. Foresti
2002 Brazilian Journal of Chemical Engineering  
This work reports on a preliminary study of anaerobic degradation of gelatin with emphasis on the development of the proteolytic biofilm in polyurethane foam matrices in differential reactors. The evolution of the biofilm was observed during 22 days by optical and scanning electron microscopy (SEM) analyses. Three distinct immobilization patterns could be observed in the polyurethane foam: cell aggregates entrapped in matrix pores, thin biofilms attached to inner polyurethane foam surfaces and
more » ... foam surfaces and individual cells that have adhered to the support. Rods, cocci and vibrios were observed as the predominant morphologies of bacterial cells. Methane was produced mainly by hydrogenothrophic reactions during the operation of the reactors.
doi:10.1590/s0104-66322002000300003 fatcat:ggyodtnvt5b4poyywy46exfx2y