ORIGINAL RESEARCH
The Utilization of N-acetyloglucosamine and
Chitin as Sources of Carbon and Nitrogen by
Planktonic and Benthic Bacteria in Lake Jeziorak
W. Donderski*, M. Swiontek Brzezinska
Department of Environmental Microbiology and Biotechnology, Institute of Ecology and Environmental Protection,
Nicolaus Copernicus University, Gagarina 9, 87-100 Toruń, Poland
Nicolaus Copernicus University, Gagarina 9, 87-100 Toruń, Poland
Pol. J. Environ. Stud. 2003;12(6):685–692
KEYWORDS
ABSTRACT
It follows from the research conducted on the number of chitinolytic bacteria among planktonic and
benthic bacteria that they occur in a higher number in bottom sediments than in water. However, the percentage
of chitinolytic bacteria among the total number of heterotrophic bacteria was higher in the water
than in the bottom sediments. Chitinolytic bacteria and the bacteria unable to decompose chitin most readily
utilized N-acetyloglucosamine as additional sources of carbon and nitrogen. Chitinolytic bacteria developed
well on a substrate with colloidal chitin as the only or an additional source of carbon and nitrogen.
However, bacteria unable to decompose chitin displayed very weak growth on a substrate with colloidal
chitin as the only source of carbon and nitrogen.
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